QT40.242,PDF,QT40.242 PDF资料,Datasheet,下载QT40.242技术资料

QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

POWER SUPPLY

3AC 380-480V Wide-range Input

Three Input Fuses Included

Version with Extra Long Lifetime Available (QT40.242)

Width only 110mm, Weight only 1.5kg

95.3% Full Load and Excellent Partial Load Efficiencies

50% BonusPower^®, 1440W for up to 4s

110A Peak Current for 25ms for Easy Fuse Tripping

Active PFC (Power Factor Correction)

Active Filtering of Input Transients

Negligible Low Input Inrush Current Surge

Full Power Between -25°C and +60°C

Current Sharing Feature for Parallel Use

Remote Control of Output Voltage

DC-OK Relay Contact

Shut-down Input

3 Year Warranty

GENERAL DESCRIPTION

SHORT-FORM DATA

The most outstanding features of the DIMENSION Q-

Series DIN-rail power supplies are the extremely high

efficiencies and the small sizes, which are achieved by a

synchronous rectification and other technological

designs.

Output voltage

Adjustment range

Output current

DC 24V

24 - 28V

40 – 34.3A

60 – 51.5A

960W

nominal

continuous

short term (4s)

continuous

short term (4s)

20Hz to 20MHz

-15%/+20%

Output power

Large power reserves of 150% support the starting of

heavy loads such as DC-motors or capacitive loads. In

many cases this allows the use of a unit from a lower

wattage class which saves space and money.

1440W

Output ripple

Input voltage

Mains frequency

AC Input current

Power factor

AC Inrush current

Efficiency

< 100mVpp

3AC 380-480V

50-60Hz

1.65 / 1.35A

0.88 / 0.90

typ. 4.5A peak

95.3 / 95.2%

47.3 / 48.4W

6%

High immunity to transients and power surges as well as

low electromagnetic emission makes usage in nearly

every environment possible.

at 3x400 / 480Vac

The integrated output power manager, the three input

fuses and near zero input inrush current make

installation and usage simple. Diagnostics are easy due

to the DC-ok relay, a green DC-OK LED and the red

overload LED.

at 3x400 / 480Vac

operational

Losses

Temperature range -25°C to +70°C

Derating

24W/°C

+60 to +70°C

Hold-up time

Dimensions

Weight

typ. 25 / 25ms

110x124x127mm WxHxD

1500g / 3.3lb

at 3x400 / 480Vac

A large international approval package for a variety of

applications makes this unit suitable for nearly every

application.

ORDER NUMBERS

MARKINGS

Power Supply QT40.241

24-28V Standard unit

Extra long lifetime

QT40.242

IND. CONT. EQ.

UL 60950-1

Class I Div 2

UL 508

Accessory

ZM2.WALL

UF20.241

YR80.241

Wall mount bracket

Buffer unit

Redundancy module

EMC, LVD, RoHS

Marine

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

INDEX

Page

1. Intended Use .......................................................3

2. Installation Requirements...................................3

3. AC-Input...............................................................4

4. Input Inrush Current ...........................................5

5. DC-Input...............................................................5

6. Output .................................................................6

7. Hold-up Time.......................................................8

8. DC-OK Relay Contact ..........................................9

9. Shut-down Input .................................................9

10. Remote Control of Output Voltage .................10

11. Efficiency and Power Losses..............................11

12. Lifetime Expectancy and MTBF.........................12

13. Functional Diagram...........................................13

14. Terminals and Wiring........................................14

15. Front Side and User Elements...........................15

16. EMC....................................................................16

17. Environment......................................................17

18. Protection Features...........................................18

19. Safety Features..................................................18

20. Dielectric Strength ............................................19

21. Approvals...........................................................19

22. Physical Dimensions and Weight..................... 20

23. Accessories ........................................................ 21

23.1. ZM2.WALL - Wall mounting bracket.......21

23.2. UF20.241 - Buffer module........................21

23.3. YR80.241 - Redundancy Module..............22

24. Application Notes............................................. 23

24.1. Repetitive Pulse Loading..........................23

24.2. Peak Current Capability ...........................24

24.3. External Input Protection.........................24

24.4. Using only 2 Legs of a 3-Phase System ....25

24.5. Charging of Batteries ...............................26

24.6. Output Circuit Breakers............................26

24.7. Parallel Use to Increase Output Power....27

24.8. Parallel Use for Redundancy....................27

24.9. Series Operation .......................................28

24.10. Inductive and Capacitive Loads................28

24.11. Back-feeding Loads ..................................28

24.12. Use in a Tightly Sealed Enclosure ............28

24.13. Mounting Orientations ............................29

The information presented in this document is believed to be accurate and reliable and may change without notice.

No part of this document may be reproduced or utilized in any form without permission in writing from the publisher.

TERMINOLOGY AND ABREVIATIONS

PE and

symbol

PE is the abbreviation for Protective Earth and has the same meaning as the symbol

This document uses the term “earth” which is the same as the U.S. term “ground”.

To be defined, value or description will follow later.

.

Earth, Ground

T.b.d.

AC 400V

A figure displayed with the AC or DC before the value represents a nominal voltage with

standard tolerances (usually 15%) included.

E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)

400Vac

A figure with the unit (Vac) at the end is a momentary figure without any additional

tolerances included.

50Hz vs. 60Hz

may

As long as not otherwise stated, AC 230V parameters are valid at 50Hz mains frequency.

A key word indicating flexibility of choice with no implied preference.

A key word indicating a mandatory requirement.

shall

should

A key word indicating flexibility of choice with a strongly preferred implementation.

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

2/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

1. INTENDED USE

This device is designed for installation in an enclosure and is intended for the general professional use such as in

industrial control, office, communication, and instrumentation equipment.

Do not use this power supply in equipment, where malfunction may cause severe personal injury or threaten human

life.

This device is designed for use in hazardous, non-hazardous, ordinary or unclassified locations.

2. INSTALLATION REQUIREMENTS

This device may only be installed and put into operation by qualified personnel.

This device does not contain serviceable parts. The tripping of an internal fuse is caused by an internal defect.

If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to

the factory for inspection.

Mount the unit on a DIN-rail so that the output and input terminals are located on the bottom of the unit. For other

mounting orientations see de-rating requirements in this document. See chapter 24.13.

This device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do

not cover ventilation grid (e.g. cable conduits) by more than 15%!

Keep the following installation clearances: 40mm on top, 20mm on the bottom, 5mm on the left and right sides are

recommended when the device is loaded permanently with more than 50% of the rated power. Increase this clearance

to 15mm in case the adjacent device is a heat source (e.g. another power supply).

WARNING

Risk of electrical shock, fire, personal injury or death.

- Do not use the power supply without proper grounding (Protective Earth). Use the terminal on the input block for

earth connection and not one of the screws on the housing.

- Turn power off before working on the device. Protect against inadvertent re-powering.

- Make sure that the wiring is correct by following all local and national codes.

- Do not modify or repair the unit.

- Do not open the unit as high voltages are present inside.

- Use caution to prevent any foreign objects from entering the housing.

- Do not use in wet locations or in areas where moisture or condensation can be expected.

- Do not touch during power-on, and immediately after power-off. Hot surfaces may cause burns.

Notes for use in hazardous location areas:

The QT40.241 is suitable for use in Class I Division 2 Groups A, B, C, D locations.

WARNING EXPLOSION HAZARDS!

Substitution of components may impair suitability for this environment. Do not disconnect the unit or operate the

voltage adjustment or S/P jumper unless power has been switched off or the area is known to be non-hazardous.

A suitable enclosure must be provided for the end product which has a minimum protection of IP54 and fulfils the

requirements of the EN 60079-15:2010.

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

3. AC-INPUT

AC input

nom.

3AC 380-480V

suitable for TN, TT and IT mains networks,

grounding of one phase is allowed except in UL 508

applications

AC input range

Allowed voltage L to earth

Input frequency

min.

max.

nom.

typ.

3x 323-576Vac

576Vac

continuous operation

continuous, IEC 60664-1

50–60Hz

6%

Turn-on voltage

Shut-down voltage

3x 305Vac

3x 275Vac

steady-state value, load independent, see Fig. 3-1

typ.

3AC 400V

3AC 480V

Input current

typ.

1.65A

1.35A

at 24V, 40A, symmetrical phase voltages,

see Fig. 3-3

Power factor^*)

Start-up delay

Rise time

typ.

max.

0.88

500ms

35ms

0.90

600ms

35ms

at 24V, 40A, see Fig. 3-4

see Fig. 3-2

at 24V, 40A, resistive load, 0mF see Fig. 3-2

at 24V, 40A, resistive load, 40mF see Fig. 3-2

see Fig. 3-2

40ms

Turn-on overshoot

500mV

*) The power factor is the ratio of the true (or real) power to the apparent power in an AC circuit.

Fig. 3-1 Input voltage range

Fig. 3-2 Turn-on behavior, definitions

P_OUT

Input

Rated input range

Voltage

L1 L2 L3

- 5%

Output

Voltage

V_IN

576Vac

Start-up Rise

delay Time

275V 305V

323V

Fig. 3-3 Input current vs. output load at 24V

Fig. 3-4 Power factor vs. output load at 24V

Input Current, typ.

Power Factor, typ.

0.95

1.6A

A: 3x 400Vac

B: 3x 480Vac

1.4

1.2

1.0

0.8

0.6

0.4

0.2

A: 3x 400Vac

B: 3x 480Vac

B

0.90

A

B

A

0.85

0.80

0.75

Output Current

0.70

0

4

8 12 16 20 24 28 32 36

40A

4

8 12 16 20 24 28 32 36 40A

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

4/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

4. INPUT INRUSH CURRENT

The power supply is equipped with an active inrush current limitation circuit, which limits the input inrush current

after turn-on to a negligible low value. The input current is usually smaller than the steady state input current.

3AC 400V

6A_peak

4.5A_peak

1.5A²s

3AC 480V

6A_peak

4.5A_peak

1.5A²s

Inrush current^*)

max.

typ.

max.

typ.

over entire temperature range

Inrush energy

Inrush delay

500ms

600ms

*) The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.

Fig. 4-1 Typical turn-on behaviour at nominal

load and 25°C ambient temperature

Input Current 2A/DIV

Input

3x400Vac

24Vdc

Output

100ms/DIV

5. DC-INPUT

Do not operate this power supply with DC-input voltage.

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

5/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

6. OUTPUT

Output voltage

Adjustment range

nom.

min.

max.

typ.

max.

typ.

24V

24-28V

30V^***)

24.1V

25.1V

10mV

50mV

1000mV

guaranteed

at clockwise end position of potentiometer

0.2%, at full load, cold unit, in “single use” mode

0.2%, at full load, cold unit, in “parallel use” mode

at no load, cold unit, in “parallel use” mode

3x323-576Vac

in “single use” mode: static value, 0AÆ40A, see Fig. 6-1

in “parallel use” mode: static value, 0AÆ40A,

see Fig. 6-2

Factory setting

Line regulation

Load regulation

Ripple and noise voltage

Output current

max.

nom.

100mVpp

40A

34.3A

60A

20Hz to 20MHz, 50Ohm

continuously available at 24V, see Fig. 6-1 and Fig. 6-2

continuously available at 28V, see Fig. 6-1 and Fig. 6-2

short term (4s) available BonusPower^®*), at 24V,

see Fig. 6-1, Fig. 6-2 and Fig. 6-4

nom.

typ.

51.5A

110A

short term (4s) available BonusPower^®*), at 28V,

see Fig. 6-1, Fig. 6-2 and Fig. 6-4

up to 25ms, output voltage stays above 20V, see Fig.

6-4, This peak current is available once every second.

See chapter 24.2 for more peak current measurements.

Output power

nom.

typ.

960W

1440W^*)

4s

continuously available at 24-28V

short term available BonusPower^®*)at 24-28V

duration until the output voltage dips, see Fig. 6-3

overload free time to reset power manager, see Fig. 6-5

see Fig. 6-1

BonusPower^®time

BonusPower^®recovery time

typ.

7s

Overload behavior

Short-circuit current^**)

cont. current

40A

44A

60A

68A

min.

max.

min.

max.

typ.

continuous, load impedance 25mOhm, see Fig. 6-1

short-term (4s), load impedance 25mOhm, see Fig. 6-1

continuous, load impedance <10mOhm

included in the power supply

46A

51A

max.

typ.

Output capacitance

10 200μF

*)

BonusPower^®, short term power capability (up to typ. 4s)

The power supply is designed to support loads with a higher short-term power requirement without damage or shutdown. The short-

term duration is hardware controlled by an output power manager. This BonusPower^®is repeatedly available. Detailed information

can be found in chapter 24.1. If the power supply is loaded longer with the BonusPower^®than shown in the bonus-time diagram (see

Fig. 6-3), the max. output power is automatically reduced to 960W.

**)

Discharge current of output capacitors is not included.

***)

This is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. It is not

guaranteed value which can be achieved. The typical value is about 28.5V.

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

6/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

Fig. 6-1 Output voltage vs. output current in

Fig. 6-2 Output voltage vs. output current in

“single use” mode, typ.

“parallel use” mode, typ.

Output Voltage

Output Voltage (Parallel Use, typ.)

Adjustment Range

28V

Adjustment Range

29V

28V

27V

26V

25V

24V

23V

22V

A

B

24

20

16

12

8

A

B

Factory

setting

A

B

Continuously

available

Short-term (4s)

BonusPower

A

B

Continuously

A

B

available

A

Short-term (4s)

4

0

B

BonusPower

0

10

20

30

40

50 60A

0

10

20

30

40

50

60 70A

Output Current

Fig. 6-3 Bonus time vs. output power

Fig. 6-4 Dynamic overcurrent capability, typ.

Bonus Time

Output Voltage (dynamic behavior, < 25ms)

28V

24

5s

max

min.

.

4

3

2

1

0

Adjustment

20

Range

16

12

8

4

0

Output Current

Output Power

0

15 30 45 60 75 90 105120135150A

100 110 120 130 140 150 160 170%

Fig. 6-5 BonusPower^®recovery time

Limitation by

Power Manager

Power

Demand

100%

t

Recovery Time

Bonus Power disabled

Bonus

Time

Output

Voltage

The BonusPower^®is available as soon as power comes on and after the end of an output short circuit or output

overload.

Fig. 6-6 BonusPower^®after input turn-on

Fig. 6-7 BonusPower^®after output short

Short of

Output

Input

Voltage

Output

Voltage

Output

Voltage

Bonus

Power

150%

Bonus

Power

150%

Output

Power

100%

Output

Power

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

7/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

7. HOLD-UP TIME

3AC 400V^*)

50ms

3AC 480V^*)

50ms

Hold-up Time

typ.

min.

typ.

min.

at 24V, 20A, see Fig. 7-1

at 24V, 40A, see Fig. 7-1

40ms

25ms

20ms

40ms

25ms

20ms

*) Curves and figures for operation on only 2 legs of a 3-phase system can be found in chapter 24.4.

Fig. 7-1 Hold-up time vs. input voltage

Fig. 7-2 Shut-down behavior, definitions

Hold-up Time

50ms

24V, 20A, typ.

L1 L2 L3

Input

Voltage

24V, 20A, min.

40

30

24V, 40A, typ

.

20

- 5%

24V, 40A, min.

Output

Voltage

10

0

Hold-up Time

Input Voltage

400 440 3x480Vac

320

360

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

8/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

8. DC-OK RELAY CONTACT

This feature monitors the output voltage, which is produced by the power supply itself. It is independent of a back-fed

voltage from a unit connected in parallel to the power supply output.

Contact closes

Contact opens

As soon as the output voltage reaches 90% of the adjusted output voltage.

As soon as the output voltage dips more than 10% below the adjusted output voltage.

Short dips will be extended to a signal length of 250ms. Dips shorter than 1ms will be ignored.

Contact re-closes

Contact ratings

As soon as the output voltage exceeds 90% of the adjusted voltage.

max

min

60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A

1mA at 5Vdc

resistive load

min. permissible load

Isolation voltage

See dielectric strength table in section 20.

Fig. 8-1 DC-ok relay contact behavior

V_OUT= V_ADJ

0.9* V_ADJ

10%

<

>

250ms

1ms

open

closed

open

closed

9. SHUT-DOWN INPUT

This feature allows a switch-off of the output of the power supply with a signal switch or an external voltage. The

shut-down occurs immediately while the turn-on is delayed up to 350ms. In a shut-down condition, the output voltage

is <2V and the output power is <0.5W.

The voltage between different minus pole output terminals must be below 1V when units are connected in parallel. In

a series operation of multiple power supplies only wiring option “A” with individual signal switches is allowed.

Please note:

- Option C requires a current sink capability of the voltage source. Do not use a blocking diode.

- The shut-down function has no safety feature included.

Fig. 9-1 Activation of the shut-down input

Option A:

Option B:

(via open

collector)

Option C:

Shut-

down

Input

n.c.

I

15

16

Shut-

down

Input

n.c.

15

16

Shut-

down

Input

15

16

(via external

voltage

+

U

OFF: linked

ON : open

OFF: U < 1V

OFF: I > 0.3mA

ON : I < 0.1mA

-

ON : U = 4 -29V

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

10. REMOTE CONTROL OF OUTPUT VOLTAGE

The shut-down input can also be used to remotely adjust the output voltage between typically 22Vdc and 28Vdc. All

other functions of shut-down input remain the same.

The control voltage is referenced to the main ground (negative output voltage)

Fig. 10-1 Remote control of the output

Fig. 10-2 Applying the control voltage

voltage

Output Voltage

Potentiometer:

28V

26V

28V setting

24V setting

24V

22V

20V

18V

16V

14V

12V

Shut-

down

Input

15

16

Control

Voltage

+

n.c.

min. 0V

max. +50V

-

0V

5V

10V

Control Voltage

Instructions:

1. Set the unit into “Single Use” mode

2. Set the output voltage adjustment (24-28V) to the maximum desired voltage.

3. Apply a control voltage to reduce the output voltage

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

10/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

11. EFFICIENCY AND POWER LOSSES

Efficiencies for 3-Phase operation:

3AC 400V

95.3%

94.7%

3AC 480V

95.2%

94.6%

Efficiency

Average efficiency^*)

typ.

at 24V, 40A

25% at 10A, 25% at 20A, 25% at 30A. 25%

at 40A

Power losses

typ.

1.5W

9.5W

24.1W

1.5W

9.8W

25.0W

with activated shut-down

at 24V, 0A (no load)

at 24V, 20A (half load)

47.3W

48.4W

at 24V, 40A (full load)

*) The average efficiency is an assumption for a typical application where the power supply is loaded with 25% of the nominal load for 25%

of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and with 100%

of the nominal load for the rest of the time.

Efficiencies when using only 2 legs of a 3-phase system:

2AC 400V

94.4%^**)

56.9W^**)

2AC 480V

94.7%^**)

53.7W^**)

Efficiency

typ.

at 24V, 40A

Power losses

at 24V, 40A (full load)

**) Curves can be found in chapter 24.4

Fig. 11-1 Efficiency vs. output current at 24V,

Fig. 11-2 Losses vs. output current at 24V,

typ.

Efficiency

Power Losses

96%

60W

3x400Vac

3x480Vac

50

40

30

20

10

0

95

3x480Vac

3x400Vac

94

93

Output Current

12 16 20 24 28 32 36 40A

92

8

12 16 20 24 28 32 36 40A

0

4

8

Fig. 11-3 Efficiency vs. input voltage at 24V,

Fig. 11-4 Losses vs. input voltage at 24V, 40A,

40A, typ.

typ.

Efficiency

Power Losses

95.5%

50W

95.4

95.3

95.2

95.1

95.0

49

48

47

46

45

Input Voltage

94.9

44

350

400

450

500 3x550Vac

350

400

450

500 3x550Vac

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

11/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

12. LIFETIME EXPECTANCY AND MTBF

QT40.241

Calculated lifetime expectancy^*)

3AC 400V

69 000h

3AC 480V

66 000h

at 24V, 40A and 40°C

86 000h

81 000h

at 24V, 32A and 40°C

at 24V, 20A and 40°C

at 24V, 40A and 25°C

at 24V, 32A and 25°C

at 24V, 20A and 25°C

114 000h

196 000h^*)

244 000h^*)

322 000h^*)

112 000h

186 000h^*)

230 000h^*)

316 000h^*)

QT40.242

Calculated lifetime expectancy^*)

3AC 400V

93 000h

3AC 480V

91 000h

at 24V, 40A and 40°C

at 24V, 32A and 40°C

at 24V, 20A and 40°C

at 24V, 40A and 25°C

at 24V, 32A and 25°C

at 24V, 20A and 25°C

132 000h

168 000h^*)

262 000h^*)

373 000h^*)

475 000h^*)

128 000h

167 000h^*)

258 000h^*)

363 000h^*)

472 000h^*)

QT40.241, QT40.242

3AC 400V

375 000h

685 000h

158 000h

211 000h

3AC 480V

369 000h

678 000h

157 000h

210 000h

MTBF^**)SN 29500, IEC 61709

at 24V, 40A and 40°C

at 24V, 40A and 25°C

at 24V, 40A and 40°C; Ground Benign GB40

at 24V, 40A and 25°C; Ground Benign GB25

MTBF^**)MIL HDBK 217F

*) The calculated lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by the

lifetime expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is calculated according

to the capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15

years (131 400h). Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices.

**) MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates reliability of a

device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent the life of a product.

The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means that

statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not be determined if the failed unit

has been running for 50 000h or only for 100h.

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

12/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

13. FUNCTIONAL DIAGRAM

Fig. 13-1 Functional diagram

Single /

Parallel

Output

Voltage

Regulator

V_OUT

L1

L2

L3

Input Fuses

Input Filter

Input Rectifier

Inrush Limiter

+

-

PFC

Converter

Power

Output

Filter

Converter

Transient Filter

Overload

LED

DC-ok

LED

Temper-

Output

ature

Output

Over-

Power

Shut-

Voltage

13

Manager

Monitor

DC ok

Relay

down

Protection

DC-ok

Contact

14

15

16

Shut-

down

Input

Shut-

down

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

13/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

14. TERMINALS AND WIRING

The terminals are IP20 Finger safe constructed and suitable for field and factory wiring.

Input

Output

DC-OK, Shut-down

spring-clamp termination

0.15-1.5mm²

Type

Solid wire

screw termination

0.5-6mm²

0.5-4mm²

screw termination

0.5-16mm²

0.5-10mm²

AWG 22-8

Stranded wire

American Wire Gauge

Max. wire diameter

0.15-1.5mm²

AWG 20-10

AWG 26-14

2.8mm

5.2mm

1.5mm

(including ferrules)

Wire stripping length

Screwdriver

7mm / 0.28inch

12mm / 0. 5inch

7mm / 0.28inch

3.5mm slotted or cross-

head No 2

3.5mm or 5mm slotted

or cross-head No 2

3mm slotted

(to open the spring)

Recommended tightening torque

1Nm, 9lb.in

2.3Nm, 20.5lb.in

Not applicable

Instructions:

a) Use appropriate copper cables that are designed for minimum operating temperatures of:

60°C for ambient up to 45°C and

75°C for ambient up to 60°C minimum

90°C for ambient up to 70°C minimum.

b) Follow national installation codes and installation regulations!

c) Ensure that all strands of a stranded wire enter the terminal connection!

d) Do not use the unit without PE connection.

e) Unused terminal compartments should be securely tightened.

f) Ferrules are allowed.

Daisy chaining:

Daisy chaining (jumping from one power supply output to the next) is allowed as long as the average output current

through one terminal pin does not exceed 54A. If the current is higher, use a separate distribution terminal block as

shown in Fig. 14-2.

Fig. 14-1 Daisy chaining of outputs

Fig. 14-2 Using distribution terminals

Distribution

Terminals

Power

Supply

Power

Supply

Power

Supply

Power

Supply

Load

+

- -

Output

+ +

- -

Output

+ + - -

Output

+ + - -

Output

+

-

+

-

max 54A!

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

14/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

15. FRONT SIDE AND USER ELEMENTS

Fig. 15-1 Front side

A

Input Terminals (Screw terminals)

L1, L2, L3 Line input

...PE (Protective Earth) input

B

C

Output Terminals (Screw terminals, two pins per pole)

+

–

Positive output

Negative (return) output

“Parallel Use” “Single Use” Selector

Set jumper to “Parallel Use” when power supplies are connected

in parallel to increase the output power. In order to achieve a

sharing of the load current between the individual power

supplies, the “parallel use” regulates the output voltage in such a

manner that the voltage at no load is approx. 4% higher than at

nominal load. See also chapter 24.7. A missing jumper is equal to

a “Single Use” mode.

D Output Voltage Potentiometer

Multi turn potentiometer;

Open the flap to set the output voltage.

Factory set: 24.1V at full output current, “Single Use” mode.

E

F

DC-OK LED (green)

On, when the voltage on the output terminals is >90% of the

adjusted output voltage

Overload LED (red)

- On, when the voltage on the output terminals is <90% of the

adjusted output voltage, or in case of a short circuit in the output.

- Flashing, when the shut-down has been activated or the unit has

switched off due to over-temperature.

- Input voltage is required

G DC-OK Relay Contact

The DC-OK relay contact is synchronized with the DC-OK LED.

See chapter 8 for details.

H Shut-down and Remote Control Input

Allows the power supply to be shut down. Can be activated with

a switch contact or an external voltage.

The remote control input allows adjusting the output voltage. See

chapter 9 and 10 for details.

Indicators, LEDs

Overload LED

OFF

ON

flashing

OFF

DC-OK LED

ON

OFF

DC-OK Contact

Closed

Open

Normal mode

During BonusPower^®

Overload (Vout < 90%)

Output short circuit

Temperature Shut-down

Active Shut-down input

No input power

OFF

Open

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

15/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

16. EMC

The power supply is suitable for applications in industrial environment as well as in residential, commercial and light

industry environment without any restrictions. A detailed EMC report is available on request.

All results assume a three phase operation f the power supply.

EMC Immunity

According generic standards: EN 61000-6-1 and EN 61000-6-2

Electrostatic discharge

EN 61000-4-2

contact discharge

air discharge

8kV

15kV

Criterion A

Electromagnetic RF field

Fast transients (Burst)

EN 61000-4-3

EN 61000-4-4

80MHz-2.7GHz

10V/m

Criterion A

input lines

output lines

DC-OK signal (coupling clamp)

4kV

2kV

Criterion A

Surge voltage on input

Surge voltage on output

EN 61000-4-5

L1 Æ L2, L2 Æ L3, L1 Æ L3

L1 / L2 / L3 Æ PE

+ Æ -

2kV

4kV

1kV

Criterion A

+ / - Æ PE

Surge voltage on DC-OK

Conducted disturbance

Mains voltage dips

EN 61000-4-5

EN 61000-4-6

EN 61000-4-11

DC-OK signal Æ PE

1kV

10V

0Vac, 20ms

Criterion A

Criterion A,

Criterion A

0.15-80MHz

0% of 380Vac (0Vac)

0% of 480Vac (0Vac)

(Dips on three phases)

Mains voltage dips

(Dips on two phases)

EN 61000-4-11

40% of 380Vac (152Vac)

40% of 480Vac (192Vac)

70% of 380Vac (266Vac)

70% of 480Vac (336Vac)

200ms

500ms

Criterion A

Voltage interruptions

Voltage sags

EN 61000-4-11

SEMI F47 0706

0Vac

5000ms

Criterion C

dips on two phases according to section 7.2. of the SEMI F47 standard

80% of 380Vac (304Vac)

70% of 380Vac (266Vac)

50% of 380Vac (160Vac)

1000ms

500ms

200ms

Criterion A

Powerful transients

VDE 0160

over entire load range

1550V, 1.3ms

Criterion A

Criterions:

A: Power supply shows normal operation behavior within the defined limits.

C: Temporary loss of function is possible. Power supply may shut-down and restarts by itself. No damage or hazards for the power supply

will occur.

EMC Emission

According generic standards: EN 61000-6-3 and EN 61000-6-4

Conducted emission

input lines

EN 55011, EN 55022, FCC Part 15, CISPR 11, CISPR 22

Class B

Conducted emission

output lines

IEC/CISPR 16-1-2, IEC/CISPR 16-2-1

5dB higher than average limits

for DC power port according EN

61000-6-3^**)

Radiated emission

Harmonic input current

EN 55011, EN 55022

EN 61000-3-2

Class B

fulfilled for class A equipment

fulfilled^*)

Voltage fluctuations, flicker EN 61000-3-3

This device complies with FCC Part 15 rules.

Operation is subjected to following two conditions: (1) this device may not cause harmful interference, and (2) this

device must accept any interference received, including interference that may cause undesired operation.

*)

Tested with constant current loads, non pulsing

**) Restrictions apply for applications in residential, commercial and light-industrial environments, where local DC power networks according

to EN 61000-6-3 are involved. No restrictions for all kinds of industrial applications.

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

16/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

Switching Frequencies

The power supply has three converters with three different switching frequencies

included. One is nearly constant. The others are variable.

Switching frequency 1

Switching frequency 2

Switching frequency 3

105kHz

1kHz to 150kHz

40kHz to 300kHz

Resonant converter, nearly constant

Boost converter, load dependent

PFC converter, input voltage and load dependent

17. ENVIRONMENT

Operational temperature^*)

Storage temperature

Output de-rating

-25°C to +70°C (-13°F to 158°F)

-40 to +85°C (-40°F to 185°F)

24W/°C

reduce output power according Fig. 17-1

for storage and transportation

60-70°C (140°F to 158°F)

IEC 60068-2-30

Humidity^**)

5 to 95% r.H.

Vibration sinusoidal

2-17.8Hz: 1.6mm; 17.8-500Hz: 1g^***)

2 hours / axis

15g 6ms, 10g 11ms^***)

IEC 60068-2-6

Shock

IEC 60068-2-27

3 bumps / direction, 18 bumps in total

Altitude

0 to 2000m (0 to 6 560ft)

without any restrictions

2000 to 6000m (6 560 to 20 000ft)

reduce output power or ambient temperature,

see Fig. 17-2

IEC 62103, EN 50178, overvoltage category II

Altitude de-rating

60W/1000m or 5°C/1000m

> 2000m (6500ft), see Fig. 17-2

Over-voltage category

III

II

IEC 62103, EN 50178, altitudes up to 2000m

altitudes from 2000m to 6000m

Degree of pollution

LABS compatibility

2

IEC 62103, EN 50178, not conductive

The unit does not release any silicone or other LABS-critical substances and is suitable for

use in paint shops.

*) Operational temperature is the same as the ambient or surrounding temperature and is defined as the air temperature 2cm below the

unit. Curves and figures for operation on only 2 legs of a 3-phase system can be found in chapter 24.4.

**) Do not energize while condensation is present.

***) Higher levels allowed when using the wall mounting bracket ZM2.WALL

Fig. 17-1 Output current vs. ambient temp.

Fig. 17-2 Output current vs. altitude

Allowed Output Current at 24V

60A

short-ter

m (4s)

us

m (4s)

us

50

40

30

20

10

0

50

40

30

20

10

0

continuo

B

C

A

A... Tamb < 60°C

B... Tamb < 50°C

C... Tamb < 40°C

-25

0

20

40

60 70°C

0

2000

4000

6000m

Ambient Temperature

Altitude

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

17/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

18. PROTECTION FEATURES

Output protection

Electronically protected against overload, no-load and short-circuits^*)

Output over-voltage protection

typ. 30Vdc

max. 32Vdc

In case of an internal power supply defect, a redundant

circuit limits the maximum output voltage. The output

shuts down and automatically attempts to restart.

Degree of protection

IP 20

EN/IEC 60529

Caution: For use in a controlled environment according

to CSA 22.2 No 107.1-01.

Penetration protection

Over-temperature protection

Input transient protection

Internal input fuse

> 5mm

yes

e.g. screws, small parts

Output shut-down with automatic restart

MOV (Metal Oxide Varistor)

included

not user replaceable

*) In case of a protection event, audible noise may occur.

19. SAFETY FEATURES

Input / output separation^*)

SELV

PELV

IEC/EN 60950-1

IEC/EN 60204-1, EN 50178, IEC 62103, IEC 60364-4-41

double or reinforced insulation

Class of protection

I

PE (Protective Earth) connection required

Isolation resistance

PE resistance

> 5MOhm

< 0.1Ohm

input to output, 500Vdc

Touch current (leakage current)

typ. 0.35mA / 0.64mA

typ. 0.45mA / 0.91mA

max. 0.45mA / 0.78mA

max. 0.60mA / 1.20mA

3x400Vac, 50Hz, TN-,TT-mains / IT-mains

3x480Vac, 60Hz, TN-,TT-mains / IT-mains

3x440Vac, 50Hz, TN-,TT-mains / IT-mains

3x528Vac, 60Hz, TN-,TT-mains / IT-mains

*) double or reinforced insulation

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

18/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

20. DIELECTRIC STRENGTH

The output voltage is floating and has no ohmic connection to the ground. Type and factory tests are conducted by

the manufacturer. Field tests may be conducted in the field using the appropriate test equipment which applies the

voltage with a slow ramp (2s up and 2s down). Connect all phase terminals together as well as all output poles before

conducting the test. When testing, set the cut-off current settings to the value in the table below.

Fig. 20-1 Dielectric strength

A

B

C

D

Type test

Factory test

Field test

60s

5s

2500Vac 3000Vac

2500Vac 2500Vac

2000Vac 2000Vac

500Vac

> 40mA

500Vac

> 1mA

Input

L1

L2

L3

DC-ok

13

14

B^*)

5s

Cut-off current setting > 10mA

> 10mA

D

A

To fulfil the PELV requirements according to EN 60204-1 § 6.4.1, we

recommend that either the + pole, the – pole or any other part of

the output circuit shall be connected to the protective earth

system. This helps to avoid situations in which a load starts

unexpectedly or can not be switched off when unnoticed earth

faults occur.

Output

Earth

+/-

C

Shut-down

15/16

B*) When testing input to DC-OK ensure that the max. voltage between DC-OK and the output is not exceeded (column D). We recommend

connecting DC-OK pins and the output pins together when performing the test.

21. APPROVALS

EC Declaration of Conformity

The CE mark indicates conformance with the

- EMC directive 2004/108/EC,

- Low-voltage directive (LVD) 2006/95/EC and

- RoHS directive 2011/65/EC.

IEC 60950-1 2^ndEdition

UL 508

CB Scheme,

Information Technology Equipment

Applicable for altitudes up to 2000m.

Listed for use as Industrial Control Equipment;

U.S.A. (UL 508) and Canada (C22.2 No. 107-1-01);

E-File: E198865

Recognized for use as Information Technology Equipment,

Level 5; U.S.A. (UL 60950-1) and Canada (C22.2 No. 60950-1);

E-File: E137006

IND. CONT. EQ.

UL 60950-1, 2^ndEdition

Applicable for altitudes up to 2000m.

ANSI / ISA 12.12.01-2007

(Class I Div 2)

(only for QT40.241)

Recognized for use in Hazardous Location Class I Div 2 T3

Groups A,B,C,D systems; U.S.A. (ANSI / ISA 12.12.01-2007) and

Canada (C22.2 No. 213-M1987)

SEMI F47

(only for QT40.241)

SEMI F47-0706 Ride-through compliance for the

semiconductor industry. Full SEMI range compliance (Dips on

two phases: 304Vac for 1000ms, 266Vac for 500ms and 190Vac

for 200ms, Pout < 960W)

Marine

(only for QT40.241)

GL (Germanischer Lloyd) classified and ABS (American Bureau

for Shipping) PDA Environmental category: C, EMC2 Marine

and offshore application

EAC TR Registration

(only for QT40.241)

Registration for the Eurasian Customs Union market

(Russia, Kazakhstan, Belarus)

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

19/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

22. PHYSICAL DIMENSIONS AND WEIGHT

Weight

DIN-Rail

1500g / 3.3lb

Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.

The DIN-rail height must be added to the unit depth (127mm) to calculate the total required

installation depth.

Installation Clearances

See chapter 2

Fig. 22-1 Front view

Fig. 22-2 Side view

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

20/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

23. ACCESSORIES

23.1. ZM2.WALL - WALL MOUNTING BRACKET

This bracket is used to mount specific

DIMENSION units onto a flat surface without

utilizing a DIN-Rail.

23.2. UF20.241 - BUFFER MODULE

This buffer unit is a supplementary device for DC 24V power supplies. It delivers

power to bridge typical mains failures or

Power

Supply

Buffer

Unit(s)

extends the hold-up time after turn-off of

the AC power. In times when the power

supply provides sufficient voltages, the

buffer unit stores energy in integrated

electrolytic capacitors. In case of mains

Load

AC

+

-

DC

voltage fault, this energy is released again in a regulated process. One buffer

module can deliver 20A. To buffer the full output current of 40A, two buffer

modules are needed in parallel.

The buffer unit does not require any control wiring. It can be added in parallel to

the load circuit at any given point. Buffer units can be added in parallel to increase

the output ampacity or the hold-up time.

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

21/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

23.3. YR80.241 - REDUNDANCY MODULE

The YR80.241 is equipped with two input channels (40A each), which are individually

decoupled by utilizing mosfet technology. The output current can go as high as 80A.

Using mosfets instead of diodes reduces the heat generation and the voltage drop between

input and output. The YR80.241 does not require an additional auxiliary voltage and is self-

powered even in case of a short circuit across the output.

Due to the low power losses, the unit is very slender and only requires 46mm width on the

DIN-rail.

Fig. 23-1 Typical 1+1 Redundant configuration for 40A with a dual redundancy module

24V

40A

Load

Failure

Monitor

QT40.241

24-28V 960W

Power Supply

QT40.241

24-28V 960W

Power Supply

Output

DC-

OK

DC-

OK

YR80.241

Redundancy

Module

Parallel Use

Single Use

Parallel Use

Single Use

Input Input

^{24V, 4}-^0A-

+ +

1

2

+

-

+

-

L1 L2 L3 PE

I

L1

L2

L3

PE

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

22/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

24. APPLICATION NOTES

24.1. REPETITIVE PULSE LOADING

Typically, a load current is not constant and varies over time. This power supply is designed to support loads with a

higher short-term power demand (=BonusPower^®). The short-term duration is hardware controlled by an output

power manager and is available on a repeated basis. If the BonusPower^®load lasts longer than the hardware

controller allows it, the output voltage will dip and the next BonusPower^®is available after the BonusPower^®recovery

time (see chapter 6) has elapsed.

To avoid this, the following rules must be met:

a) The power demand of the pulse must be below 150% of the nominal output power.

b) The duration of the pulse power must be shorter than the allowed BonusPower^®time. (see output section)

c)

The average (R.M.S.) output current must be below the specified continuous output current.

If the R.M.S. current is higher, the unit will respond with a thermal shut-down after a period of time. Use the

maximum duty cycle curve (Fig. 24-2) to check if the average output current is below the nominal current.

d) The duty cycle must be below 0.75.

Fig. 24-1 Repetitive pulse loads, definitions

Fig. 24-2 Max. duty cycle curve

P

₀= 10%

₀= 50%

₀= 75%

Duty Cycle

0.75

P_PEAKT_PEAK

T₀

max.

150%

0.6

0.4

0.2

100%

P₀= 100%

P₀

P_PEAK

140 150%

0

100

110

120

130

T

peak

P₀

Base load (W)

D

utyCycle =

P_PEAKPulse load (above 100%)

T₀Duration between pulses (s)

T_PEAKPulse duration (s)

T

peak + T0

T

peak

-

(Duty

C

ycle x Tpeak

)

T₀

=

D

utyC

ycle

Example: A load is powered continuously with 480W (= 50% of the rated output load). From time to time a peak

power of 1440W (= 150% of the rated output load) is needed for 1 second.

The question is: How often can this pulse be supplied without overloading the power supply?

- Make a vertical line at P_PEAK= 150% and a horizontal line where the vertical line crosses the P₀= 50%

curve. Read the max. duty cycle from the duty cycle-axis (= 0.37)

- Calculate the required pause (base load) length T₀:

Tpeak

-

(Duty

C

ycle x Tpeak

ycle

)

1s

-

(0.37 x 1s)

0.37

- Result: The required pause length = 1.7s

T₀=

=

=1.7s

Duty

C

- Max. repetition rate = pulse +pause length = 2.7s

More examples for pulse load compatibility:

P_PEAK

P₀

960W 1s

0W 1s

480W 1s

T_PEAK

T₀

P_PEAK

P₀

T_PEAK

T₀

1440W

1200W

>25s

>1.3s

> 0.75s

1440W

480W 0.1s

480W 1s

480W 3s

>0.16s

>1.6s

>4.9s

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

23/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

24.2. PEAK CURRENT CAPABILITY

The power supply can deliver peak currents (up to several milliseconds) which are higher than the specified short term

currents.

This helps to start current demanding loads. Solenoids, contactors and pneumatic modules often have a steady state

coil and a pick-up coil. The inrush current demand of the pick-up coil is several times higher than the steady-state

current and usually exceeds the nominal output current (including the BonusPower^®). The same situation applies when

starting a capacitive load.

The peak current capability also ensures the safe operation of subsequent circuit breakers of load circuits. The load

branches are often individually protected with circuit breakers or fuses. In case of a short or an overload in one branch

circuit, the fuse or circuit breaker need a certain amount of over-current to open in a timely manner. This avoids

voltage loss in adjacent circuits.

The extra current (peak current) is supplied by the power converter and the built-in large sized output capacitors of

the power supply. The capacitors get discharged during such an event, which causes a voltage dip on the output. The

following two examples show typical voltage dips:

Fig. 24-3 Peak load with 2x the nominal

Fig. 24-4 Peak load with 5x the nominal

current for 50ms, typ.

current for 5ms, typ.

Output

Voltage

24V

80A

Voltage

20V

200A

12V

Output

Current

Output

Current

0A

10ms/DIV

1ms/DIV

80A Peak load (resistive) for 50ms

Output voltage dips from 24V to 20V.

200A Peak load (resistive) for 5ms

Output voltage dips from 24V to 12V.

Please note: The DC-OK relay triggers when the voltage dips more than 10% for longer than 1ms.

Peak current voltage dips

typ.

from 24V to 20V at 80A for 50ms, resistive load

from 24V to 12V at 200A for 2ms, resistive load

from 24V to 12V at 200A for 5ms, resistive load

24.3. EXTERNAL INPUT PROTECTION

The unit is tested and approved for branch circuits up to 30A (U.S.A.) and 32A (IEC). An external protection is only

required if the supplying branch has an ampacity greater than this. Check also local codes and local requirements. In

some countries local regulations might apply.

If an external fuse is necessary or utilized, minimum requirements need to be considered to avoid nuisance tripping of

the circuit breaker. A minimum value of 6A B- or C-Characteristic breaker should be chosen.

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

24/29

www.pulspower.com Phone +49 89 9278 0 Germany

QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

24.4. USING ONLY 2 LEGS OF A 3-PHASE SYSTEM

No external protection devices are required to protect against a phase-loss

failure.

L1

L2

L3

PE

Power Supply

AC

This power supply can also be permanently operated on two legs of a 3-

phase system. However, it is not recommended for this power class since the

supplying 3-phase network can become unbalanced.

L1

L2

L3

open

The output power must be reduced according to the curves below when

operation on only two legs of a 3-phase system. A long-term exceeding of

these limits will result in a thermal shut-down of the unit.

DC

A use below 340Vac with more than 30A output current can also result in a thermal shut-down.

During power-on, some start-up attempts can occur until a permanent output power is available.

EMC performance, hold-up time, losses and output ripple differ from a three phase operation. Therefore, check

suitability of your individual application.

Such use is not included in the UL approval. Additional tests might be necessary when the complete system has to be

approved according to UL 508 or UL60950-1.

The screw of the terminal which remains unused must be securely tightened.

Fig. 24-5

Fig. 24-6

Output current vs. ambient temperature

Hold-up time vs. input voltage

Allowed Output Current for Use on only Two

Legs of a 3-Phase System

Hold-up Time for Use on only Two Legs of a

Three Phase System

40A

50ms

C

24V, 20A, typ.

30

40

A

B

24V, 20A, min.

A... 2x 460

B... 2x 340

C... max. 6

to 552Vac

to 460Vac

0 seconds

30

20

10

0

24V, 40A, typ

.

20

24V, 40A, min.

10

0

Input Voltage

-25

0

20

40

60 70°C

Ambient Temperature

320

360

400

440 3x480Vac

Fig. 24-7

Efficiency vs. output current at 24V

Fig. 24-8

Losses vs. output current at 24V

Power Losses for Use on only

Two Legs of a 3-Phase System

Efficiency for Use on only

Two Legs of a 3-Phase System

60W

50

96%

95

2x400Vac

2x480Vac

2x400Vac

40

2x480Vac

94

93

92

30

20

Output Current

12 16 20 24 28 32 36 40A

Output Current

12 16 20 24 28 32 36 40A

10

0

4

8

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

25/29

www.pulspower.com Phone +49 89 9278 0 Germany

QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

24.5. CHARGING OF BATTERIES

The power supply can be used to charge lead-acid or maintenance free batteries. (Two 12V batteries in series)

Instructions for charging batteries:

a) Set output voltage (measured at no load and at the battery end of the cable) very precisely to the end-of-charge

voltage.

End-of-charge voltage

Battery temperature

27.8V

10°C

27.5V

20°C

27.15V

30°C

26.8V

40°C

b) Use a 50A or 63A circuit breaker (or blocking diode) between the power supply and the battery.

c) Ensure that the output current of the power supply is below the allowed charging current of the battery.

d) Use only matched batteries when putting 12V types in series.

e) The return current to the power supply (battery discharge current) is typ. 35mA when the power supply is

switched off (except in case a blocking diode is utilized).

24.6. OUTPUT CIRCUIT BREAKERS

Standard miniature circuit breakers (MCB’s or UL1077 circuit breakers) are commonly used for AC-supply systems and

may also be used on DC branches.

MCB’s are designed to protect wires and circuits. If the ampere value and the characteristics of the MCB are adapted to

the wire size that is used, the wiring is considered as thermally safe regardless of whether the MCB opens or not.

To avoid voltage dips and under-voltage situations in adjacent 24V branches which are supplied by the same source, a

fast (magnetic) tripping of the MCB is desired. A quick shutdown within 10ms is necessary corresponding roughly to

the ride-through time of PLC's. This requires power supplies with high current reserves and large output capacitors.

Furthermore, the impedance of the faulty branch must be sufficiently small in order for the current to actually flow.

The best current reserve in the power supply does not help if Ohm’s law does not permit current flow. The following

table has typical test results showing which B- and C-Characteristic MCBs magnetically trip depending on the wire cross

section and wire length.

Maximal wire length^*)for a fast (magnetic) tripping:

Fig. 24-9 Test circuit

0.75mm²

28m

26m

19m

12m

9m

1.0mm²

38m

35m

26m

16m

12m

10m

5m

1.5mm²

54m

50m

38m

24m

17m

15m

7m

2.5mm²

78m

74m

58m

32m

25m

21m

11m

59m

37m

32m

24m

14m

C-2A

C-3A

C-4A

MCB

Power Supply

Load

C-6A

+

AC

C-8A

Wire length

C-10A

C-13A

B-6A

7m

S1

4m

-

DC

19m

11m

10m

8m

26m

17m

13m

11m

6m

35m

26m

21m

14m

8m

S1... Fault simulation switch

B-10A

B-13A

B-16A

B-20A

4m

*) Don’t forget to consider twice the distance to the load (or cable length) when calculating the total wire length (+ and – wire).

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

26/29

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QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

24.7. PARALLEL USE TO INCREASE OUTPUT POWER

Unit A

Power supplies from the same series (Q-Series) can be paralleled to increase

the output power. The output voltage shall be adjusted to the same value

( 100mV) in “Single use” mode with the same load conditions on all units, or

the units can be left with the factory settings. After the adjustments, the

jumper on the front of the unit shall be moved from “Single use” to

“Parallel use”, in order to achieve load sharing. The “Parallel use” mode

regulates the output voltage in such a manner that the voltage at no load is

approx. 4% higher than at nominal load. See also chapter 6. If no jumper is

plugged in, the unit is in “Single use” mode. Factory setting is also “Single

use” mode.

AC

+

-

DC

+

Unit B

Load

AC

-

+

-

DC

If more than three units are connected in parallel, a fuse or circuit breaker with a rating of 50A or 63A is required on

each output. Alternatively, a diode or redundancy module can also be utilized.

Keep an installation clearance of 15mm (left / right) between two power supplies and avoid installing the power

supplies on top of each other. Do not use power supplies in parallel in mounting orientations other than the standard

mounting orientation (terminals on the bottom of the unit) or in any other condition where a derating of the output

current is required (e.g. altitude, above 60°C, …).

Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple power supplies.

24.8. PARALLEL USE FOR REDUNDANCY

Power supplies can be paralleled for redundancy to gain higher system availability. Redundant systems require a

certain amount of extra power to support the load in case one power supply unit fails. The simplest way is to put two

power supplies in parallel. This is called a 1+1 redundancy. In case one power supply unit fails, the other one is

automatically able to support the load current without any interruption. Redundant systems for a higher power

demand are usually built in a N+1 method. E.g. five power supplies, each rated for 40A are paralleled to build a 160A

redundant system. For N+1 redundancy the same restrictions apply as for increasing the output power, see also

chapter 24.7.

Please note: This simple way to build a redundant system does not cover failures such as an internal short circuit in

the secondary side of the power supply. In such a case, the defective unit becomes a load for the other power supplies

and the output voltage can not be maintained any more. This can be avoided by utilizing redundancy modules, which

have decoupling devices (diodes or mosfets) included. Further information and wiring configurations can be found in

chapter 23.3.

Recommendations for building redundant power systems:

a) Use separate input fuses for each power supply. A separate source for each supply when possible increases the

reliability of the redundant system.

b) Set the power supply into “Parallel Use” mode.

c)

Monitor the individual power supply units. Therefore, use the DC-OK relay contact of the QT40 power supply.

d) It is desirable to set the output voltages of all units to the same value ( 100mV) or leave it at the factory setting.

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

27/29

www.pulspower.com Phone +49 89 9278 0 Germany

QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

24.9. SERIES OPERATION

Unit A

Power supplies of the same type can be connected in series for higher

output voltages. It is possible to connect as many units in series as needed,

providing the sum of the output voltage does not exceed 150Vdc. Voltages

with a potential above 60Vdc are not SELV any more and can be dangerous.

Such voltages must be installed with a protection against touching.

AC

+

-

DC

+

Load

Unit B

Earthing of the output is required when the sum of the output voltage is

above 60Vdc.

AC

+

-

Avoid return voltage (e.g. from a decelerating motor or battery) which is

applied to the output terminals.

Earth

(see notes)

DC

Keep an installation clearance of 15mm (left / right) between two power

supplies and avoid installing the power supplies on top of each other. Do not use power supplies in series in mounting

orientations other than the standard mounting orientation (terminals on the bottom of the unit).

Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple power supplies.

24.10.INDUCTIVE AND CAPACITIVE LOADS

The unit is designed to supply any kind of loads, including capacitive and inductive loads.

24.11.BACK-FEEDING LOADS

Loads such as decelerating motors and inductors can feed voltage back to the power supply. This feature is also called

return voltage immunity or resistance against Back- E.M.F. (Electro Magnetic Force).

This power supply is resistant and does not show malfunctioning when a load feeds back voltage to the power supply.

It does not matter whether the power supply is on or off.

The maximum allowed feed-back-voltage is 35Vdc. The absorbing energy can be calculated according to the built-in

large sized output capacitor which is specified in chapter 6.

24.12.USE IN A TIGHTLY SEALED ENCLOSURE

When the power supply is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher

than outside. In such situations, the inside temperature defines the ambient temperature for the power supply.

The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure.

The power supply is placed in the middle of the box, no other heat producing items are inside the box

Enclosure:

Load:

Input:

Rittal Typ IP66 Box PK 9522 100, plastic, 254x180x165mm

24V, 32A; (=80%) load is placed outside the box

230Vac

Temperature inside enclosure:

57.5°C (in the middle of the right side of the power supply with a distance of 2cm)

Temperature outside enclosure: 23.6°C

Temperature rise:

33.9K

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

28/29

www.pulspower.com Phone +49 89 9278 0 Germany

QT40.241, QT40.242

Q-Series

24V, 40A, THREE PHASE INPUT

24.13.MOUNTING ORIENTATIONS

Mounting orientations other than all terminals on the bottom require a reduction in continuous output power or a

limitation in the maximum allowed ambient temperature. The amount of reduction influences the lifetime expectancy

of the power supply. Therefore, two different derating curves for continuous operation can be found below:

Curve A1

Curve A2

Recommended output current.

Max allowed output current (results in approximately half the lifetime expectancy of A1).

Fig. 24-10

Output Current

Mounting

Orientation A

(Standard

A1

40A

30

20

10

0

orientation)

Power

Supply

Ambient Temperature

INPUT OUTPUT

10

20

30

40

50

60°C

Fig. 24-11

Mounting

Output Current

T P U O T U T U I N P

40A

Orientation B

30

20

10

(Upside down)

A2

A1

y

u S p p l

r e P o w

Ambient Temperature

20 30 40 50

0

10

Fig. 24-12

Output Current

Mounting

Orientation C

(Table-top

40A

30

20

10

A2

A1

mounting)

Ambient Temperature

20 30 40 50

0

10

Fig. 24-13

Mounting

Orientation D

(Horizontal cw)

Output Current

40A

30

20

10

A2

A1

Ambient Temperature

20 30 40 50

0

10

Fig. 24-14

Mounting

Orientation E

(Horizontal ccw)

Output Current

40A

30

20

10

A2

A1

Ambient Temperature

20 30 40 50

0

10

Dec. 2016 / Rev. 2.4 DS-QT40.241-EN

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

29/29

www.pulspower.com Phone +49 89 9278 0 Germany

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