Puls QT20.481 DIN rail power supply Owner's Manual

Q-Series

QT20.481

48V, 10A, T

HREE

P

HASE

I

NPUT

G

ENERAL

D

ESCRIPTION

The most outstanding features of the DIMENSION Q-

Series DIN-rail power supplies are the extremely high efficiencies and the compact sizes which are achieved by a synchronous rectification and other unique design details.

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.

High immunity to transients and power surges as well as low electromagnetic emission makes usage in nearly every environment possible.

The integrated output power manager and virtually no input inrush current make installation and usage simple with no jumper and switches necessary. Diagnostics are easy due to the DC-ok relay, a green DC-OK LED and the red overload LED.

Unique quick-connect spring-clamp terminals allow a safe and fast installation and a large international approval package for a variety of applications makes this unit suitable for nearly every application.

O

RDER

N

UMBERS

Power Supply QT20.481

P

OWER

S

UPPLY

3AC 380-480V Wide-range Input

Also Specified for 2-Phase Operation

95.4% Full Load and Excellent Partial Load Efficiencies

Width only 65mm, Weight only 870g

50% BonusPower

®

, 720W for up to 4s

Active Power Factor Correction PFC

Active Filtering of Input Transients

Full Power Between -25°C and +60°C

Extremely Low Input Inrush Current Surge

DC-OK Relay Contact

Quick-connect Spring-clamp Terminals

3 Year Warranty

S

HORT

-

FORM

D

ATA

Output voltage DC 48V

Adjustment range 48 - 55V

Output current 10 – 8.7A

15 – 13A

Output power

Output ripple

Input voltage

480W

720W

< 100mVpp 20Hz to 20MHz

3AC 380-480V ±15%

Mains frequency

AC Input current

50-60Hz

0.79 / 0.65A

Power factor 0.94 / 0.95

AC Inrush current typ. 3A peak nominal continuous short term (4s) continuous short term (4s)

±6% at 3x400 / 480Vac at 3x400 / 480Vac

Efficiency

Losses

95.4 / 95.0%

23.1 / 25.3W at 3x400 / 480Vac at 3x400 / 480Vac

Temperature range -25°C to +70°C operational

Derating 12W/°C +60 to +70°C

Hold-up time typ. 22 / 22ms at 3x400 / 480Vac

Weight

M

ARKINGS

870g / 1.92lb

IND. CONT. EQ.

UL 508

UL 60950-1

Class I Div 2

Marine

EMC, LVD

Oct. 2016 / Rev. 2.0 DS-QT20.481-EN

All parameters are specified at 48V, 10A, 3x 400Vac, 50Hz, symmetrical mains voltages, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Germany

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I

NDEX

Page

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

17.

18.

19.

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

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

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

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

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

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

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

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

Efficiency and Power Losses................................9

Lifetime Expectancy and MTBF.........................10

Functional Diagram...........................................10

Terminals and Wiring........................................11

Front Side and User Elements...........................12

EMC....................................................................13

Environment ......................................................14

Protection Features ...........................................15

Safety Features ..................................................15

Dielectric Strength ............................................16

Approvals...........................................................16

20.

Physical Dimensions and Weight......................17

21.

Accessories .........................................................18

Page

21.1.

ZM1.WALL – Wall/Panel mounting bracket

18

21.2.

ZM14.SIDE - Side Mounting Bracket........19

21.3.

UF20.481 - Buffer module ........................20

21.4.

YR40.482 - Redundancy Module..............20

22.

Application Notes............................................. 21

22.1.

Repetitive Pulse Loading..........................21

22.2.

Peak Current Capability ...........................22

22.3.

External Input Protection.........................22

22.4.

Using only 2 Legs of a 3-Phase System ....23

22.5.

Charging of Batteries ...............................23

22.6.

Output Circuit Breakers............................24

22.7.

Series Operation .......................................24

22.8.

Parallel Use to Increase Output Power....25

22.9.

Parallel Use for Redundancy ....................25

22.10.

Inductive and Capacitive Loads................25

22.11.

Back-feeding Loads ..................................26

22.12.

Use in a Tightly Sealed Enclosure ............26

22.13.

Mounting Orientations ............................27

The information given in this document is correct to the best of our knowledge and experience at the time of publication. If not expressly agreed otherwise, this information does not represent a warranty in the legal sense of the word. As the state of our knowledge and experience is constantly changing, the information in this data sheet is subject to revision. We therefore kindly ask you to always use the latest issue of this document (available under www.pulspower.com). No part of this document may be reproduced or utilized in any form without our prior permission in writing.

Some parts of this unit are patent by PULS (US patent No 091662,063, Des. 424,529, …).

T

ERMINOLOGY AND

A

BREVIATIONS

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

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

T.B.D.

AC 400V

To be defined, value or description will follow later.

A figure displayed with the AC or DC before the value represents a nominal voltage with standard tolerances included.

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

400Vac

50Hz vs. 60Hz may shall should

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

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.

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

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QT20.481

Q-Series

48V, 10A, T

HREE

P

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I

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1. I

NTENDED

U

SE

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.

2. I

NSTALLATION

R

EQUIREMENTS

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 input terminals are located on the bottom of the unit. For other mounting

orientations see de-rating requirements in this document. See chapter 22.13.

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).

Caution: For use in a controlled environment according to CSA 22.2 No 107.1-01.

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 QT20.481 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 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.

Oct. 2016 / Rev. 2.0 DS-QT20.481-EN


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QT20.481

Q-Series

48V, 10A, T

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P

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I

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3. AC-I

NPUT

The unit is optimized to operate on a three phase system. An operation on only two legs of a three-phase system is

possible with slightly different parameters. See chapter 22.4 for details.

AC input

AC input range

Suitable mains systems

Allowed voltage L to Earth

Input frequency

Turn-on voltage

Shut-down voltage nom. 3AC 380-480V Wide-range input min. 3x 323-552Vac Continuous

TN, TT, IT max. 400Vac

Line (L) must not be earthed (grounded)

Continuous, IEC 60664-1 nom. 50–60Hz typ. 3x 263Vac typ. 3x 242Vac

±6%

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

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

Input current

Power factor

*)

Start-up delay

Rise time typ. typ. typ. typ. typ.

3AC 400V

0.79A

0.94

350ms

30ms

40ms

3AC 480V

0.65A

At 48V, 10A, see Fig. 3-3

0.95

290ms

30ms

40ms


See Fig. 3-2

At 48V, 10A, only resistive load see Fig. 3-2

At 48V, 10A, resistive load with an additional 10mF capacitor

Turn-on overshoot max. 500mV 500mV

See Fig. 3-2

*) 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

Rated input range

Input

Voltage

L1 L2 L3

- 5%

Output

Voltage

242V 263V 323V

V

IN

552Vac

Fig. 3-3 Input current vs. output load at 48V

Input Current, typ.

0.8A

0.7

0.6

0.5

0.4

0.3

0.2

0.1

3x

40

3x

0V

480 ac

Va

Output Current

0

1 2 3 4 5 6 7 8 9 c

10A

Start-up Rise delay Time

Fig. 3-4 Power factor vs. output load at 48V

1.0

Power Factor, typ.

0.95

0.9

3x

480Vac

0.85

3x

400Vac

0.8

Output Current

0.75

1 2 3 4 5 6 7 8 9 10A

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4. I

NPUT

I

NRUSH

C

URRENT

The power supply is equipped with an active inrush current limitation circuit, which limits the input inrush current after turn-on and after short input voltage interruptions to a very low value.

Inrush current *)

3AC 400V 3AC 480V

max. peak

Over entire temperature range

Inrush energy

Inrush delay max. typ.

1A 2 s 1A

270ms

2 s

220ms



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

Fig. 4-1 Typical turn-on behavior at nominal load and 25°C ambient temperature

Input Current 2A/DIV

Inrush

Delay

Input Voltage 1000V/DIV

Output Voltage

5. DC-I

NPUT

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

Oct. 2016 / Rev. 2.0 DS-QT20.481-EN


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6. O

UTPUT

Output voltage

Adjustment range

Q-Series nom. 48V min. 48-55V

QT20.481

48V, 10A, T

HREE

P

HASE

I

NPUT

Guaranteed

Factory setting

Line regulation

Load regulation

Ripple and noise voltage

Output current – continuous typ. 48.0V max. 10mV max. 100mV max. 100mVpp nom. 10A

±0.2%, at full load, cold unit

At 3x 323-552Vac voltage change

Static value, 0AÆ10A

20Hz to 20MHz, 50Ohm

At 48V, see Fig. 6-1

Output current – up to 4s

*)

Output power – continuous nom. 480W

Output power – up to 4s

*)

720W

*)

BonusPower

®

BonusPower

® recovery time nom. nom. nom. 13A typ.

8.7A

15A

7s

At 55V, see Fig. 6-1

At 48V, see Fig. 6-1 and Fig. 6-2

At 55V, see Fig. 6-1 and Fig. 6-2

At 48-55V

the output voltage dips, see Fig. 6-2

Overload free time to reset power manager, see Fig.

6-3

Overload behavior cont. current

See Fig. 6-1

Short-circuit current

**)

min.

load impedance 50mOhm, see Fig. 6-1

Output capacitance max. 17A typ. 250μF

Short-term (4s), load impedance 50mOhm, see Fig. 6-1

Included in the power supply

*) 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 shortterm duration is hardware controlled by an output power manager. This BonusPower ® is repeatedly available. Detailed information

can be found in chapter 22.1. If the power supply is loaded longer with the BonusPower

®

than shown in the bonus-time diagram (see

Fig. 6-2), the max. output power is automatically reduced to 480W.

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 56V.

Oct. 2016 / Rev. 2.0 DS-QT20.481-EN


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Q-Series

48V, 10A, T

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I

Fig. 6-1 Output voltage vs. output current, typ.

24

16

8

0

Output Voltage

55V

48

40

32

A

A

B

Continuously available

Short-term (4s)

BonusPower

Adjustment Range

Output Current

A

B

0 2 4 6 8 10 12 14

B

16A

Fig. 6-2 Bonus time vs. output power Fig. 6-3 BonusPower ® recovery time

Bonus Time

5s max.

Power

Demand

Limitation by

Power Manager

4

100%

3 min.

t

2

Bonus

Time

Recovery Time

Bonus Power disabled

1

Output

Voltage

0

110 120

Output Power

130 140 150 160% t

The BonusPower

®

is available as soon as power comes on and after the end of an output short circuit or output overload.

Fig. 6-4 BonusPower ® after input turn-on

Input

Voltage

Fig. 6-5 BonusPower ® after output short

Short of

Output

Output

Voltage

Output

Voltage

100%

150% Bonus

Power

Output

Power

100%

150%

Bonus

Power

Output

Power

NPUT

Oct. 2016 / Rev. 2.0 DS-QT20.481-EN


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7. H

OLD

-

UP

T

IME

Hold-up Time typ. min. typ. min.

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

3AC 400V

44ms

36ms

22ms

18ms

3AC 480V

44ms

36ms

22ms

18ms





Fig. 7-2 Shut-down behavior, definitions

Hold-up Time

50ms L1 L2 L3

48V, 5A, typ.

40

48V, 5A, min.

Input

Voltage

30

20

10

48V, 10A, typ.

48V, 10A, min.

Output

Voltage

- 5%

Hold-up Time

Input Voltage

0

320 360 400 440 3x480Vac

8. DC-OK R

ELAY

C

ONTACT

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

Contact re-closes

Contact ratings

Isolation voltage

As soon as the output voltage reaches 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.

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

See dielectric strength table in section 18.

Resistive load

Min. permissible load

Fig. 8-1 DC-ok relay contact behavior

V

OUT

= V

ADJ

10%

0.9* V

ADJ

<

1ms

>

1ms

250ms open closed open closed

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48V, 10A, T

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9. E

FFICIENCY AND

P

OWER

L

OSSES

Efficiency

Average efficiency *) typ. typ.

3AC 400V 3AC 480V

95.4% 95.0% At 48V, 10A

94.4% 93.8% 25% at 2.5A, 25% at 5A, 25% at 7.5A and

25% at 10A

Power losses typ. typ.

8.2W

14.1W

10.0W

15.8W

At 48V, 0A (no load)

At 48V, 5A (half load) typ. 23.1W 25.3W At 48V, 10A (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.

Fig. 9-1 Efficiency vs. output current at 48V, typ.

Fig. 9-2 Losses vs. output current at 48V, typ.

Efficiency

96%

95

94

93

92

91

90

89

88

(a)

(b)

(a) 3x 400Vac

(b) 3x 480Vac

Output Current

2 3 4 5 6 7 8 9 10A

Power Losses

30W

25

20

15

10

(b)

(a)

(a) 3x 400Vac

(b) 3x 480Vac

5

0

Output Current

0 1 2 3 4 5 6 7 8 9 10A

Fig. 9-3 Efficiency vs. input voltage at 48V,

10A, typ.

Efficiency

95.8%

95.6

95.4

95.2

95.0

94.8

94.6

350

Input Voltage

400 450 500 3x550Vac

Fig. 9-4 Losses vs. input voltage at 48V, 10A, typ.

Power Losses

27W

26.0

25.0

24.0

23.0

22.0

21.0

350

Input Voltage

400 450 500 3x550Vac

Oct. 2016 / Rev. 2.0 DS-QT20.481-EN


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Q-Series

10. L

IFETIME

E

XPECTANCY AND

MTBF

QT20.481

48V, 10A, T

HREE

P

HASE

I

NPUT

Calculated lifetime expectancy*) 250 000h

*)

242

89 000h 86 000h

At 48V, 5A and 25°C


MTBF**) SN 29500, IEC 61709

MTBF**) MIL HDBK 217F

51 000h

1 194 000h

690 000h

389 000h

284 000h

48 000h

1 159 000h

670 000h

371 000h

271 000h




At 48V, 10A and 25°C; Ground Benign GB25

At 48V, 10A and 40°C; Ground Benign GB40

*) 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.

11. F

UNCTIONAL

D

IAGRAM

Fig. 11-1 Functional diagram

Output

Voltage

Regulator

L1

L2

L3

Input Filter

Input Rectifier

Inrush Limiter

Transient Filter

Temperature

Shutdown

Output

Power

Manager

PFC

Converter

Output

Over-

Voltage

Protection

Power

Converter

Output

Voltage

Monitor

Output

Filter

DC ok

Relay

V

OUT

-

-

+

+

Overload

LED

DC-ok

LED

DC-ok

Contact

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QT20.481

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48V, 10A, T

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12. T

ERMINALS AND

W

IRING

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

Type

Solid wire

Stranded wire

American Wire Gauge

Wire diameter

Wire stripping length

All terminals

Quick-connect spring-clamp terminals

Max. 6mm

2

Max. 4mm

2

Max. AWG10

Max. 2.8mm (including ferrules)

Typ. 10mm / 0.4inch

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) Ferrules are allowed.

1. Insert the wire 2. Snap the lever

To disconnect wire: same procedure vice versa

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 27A. If the current is higher, use a separate distribution terminal block as

shown in Fig. 12-2.

Fig. 12-1 Daisy chaining of outputs Fig. 12-2 Using distribution terminals

Distribution

Terminals

Power

Supply

+ +

- -

Output

Power

Supply

+ +

- -

Output

Load

+

-

Power

Supply

+ +

- -

Output

Power

Supply

+ +

- -

Output

Load

+

max 27A continuous!

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Q-Series

13. F

RONT

S

IDE AND

U

SER

E

LEMENTS

Fig. 13-1 Front side

QT20.481

48V, 10A, T

HREE

P

HASE

I

NPUT

L1, L2, L3 Line input

...PE (Protective Earth) input per pole)

+ Positive output

– Negative (return) output

C Output Voltage Potentiometer

Multi turn potentiometer;

Open the flap to set the output voltage.

Factory set: 48.0V at full output current

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

- 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.

- On, when the unit has switched off due to over-temperature.

- Input voltage is always required

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

See chapter 8 for details.

Indicators, LEDs:

Normal mode

During BonusPower

®

Overload (Vout < 90%)

Output short circuit

Temperature Shut-down

No input power

Overload LED

OFF

OFF

ON

ON

ON

OFF

DC-OK LED

ON

ON

OFF

OFF

OFF

OFF

DC-OK Contact

Closed

Closed

Open

Open

Open

Open

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48V, 10A, T

HREE

P

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14. EMC

The power supply is suitable for applications in industrial environment as well as in residential, commercial and light industry environment without any restrictions.

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

EMC Immunity

Electrostatic discharge

Electromagnetic RF field

Surge voltage on input

Surge voltage on output

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

EN 61000-4-2

EN 61000-4-3

Contact discharge

Air discharge

80MHz-2.7GHz

EN 61000-4-5

EN 61000-4-5 + Æ -

+ / - Æ PE

EN 61000-4-5 DC-OK signal Æ PE

EN 61000-4-6 0.15-80MHz

EN 61000-4-11

EN 61000-4-11

EN 61000-4-11

Output lines

DC-OK signal (coupling clamp)

L1 Æ L2, L2 Æ L3, L1 Æ L3

L1 / L2 / L3 Æ PE

0% of 380Vac (0Vac)

0% of 480Vac (0Vac)

40% of 380Vac (152Vac)

40% of 480Vac (192Vac)

70% of 380Vac (266Vac)

70% of 480Vac (336Vac)

0Vac

8kV

15kV

20V/m

4kV

2kV

2kV

2kV

4kV

500V

1kV

1kV

20V

0Vac, 20ms

0Vac, 20ms

200ms

200ms

500ms

500ms

5000ms

Criterion A

Criterion A

Criterion A

Criterion A

Criterion A

Criterion A

Criterion A

Criterion A

Criterion A

Criterion A

Criterion A Surge voltage on DC-OK

Conducted disturbance

Mains voltage dips

(Dips on three phases)

Mains voltage dips

(Dips on two phases)

Voltage interruptions

Criterion A,

Criterion A

Criterion A

Criterion A

Criterion A

Criterion A

Criterion C

Voltage sags SEMI F47 0706 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)

Over entire load range

1000ms

500ms

200ms

1550V, 1.3ms

Criterion A

Criterion A

Criterion A

Criterion A Powerful transients VDE 0160

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

Conducted emission input lines

Conducted emission output lines

Radiated emission

Harmonic input current

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

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

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

EN 55011, EN 55022

EN 61000-3-2

Class B

12dB higher than average limits for DC power port according to

EN 61000-6-3 **)

Class B fulfilled for class A equipment fulfilled *)

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.

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Switching Frequencies

Switching frequency 1



The power supply has three converters with three different switching frequencies included. One is nearly constant. The others are input voltage and load dependent.

100kHz

30kHz to 90kHz

40kHz to 220kHz

Resonant converter, nearly constant

Boost converter, load dependent

PFC converter, input voltage and load dependent

15. E

NVIRONMENT

Operational temperature

*)

-25°C to +70°C (-13°F to 158°F)

Storage temperature

Output de-rating

-40 to +85°C (-40°F to 185°F)

12W/°C

Humidity **)

Vibration sinusoidal

Vibration random

Shock

5 to 95% r.H.

2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g

2 hours / axis

0.5m²(s³)

2 hours / axis

30g 6ms, 20g 11ms

3 bumps / direction, 18 bumps in total

Altitude 0 to 2000m (0 to 6 560ft)

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

Reduce output power according Fig. 15-1

For storage and transportation

60-70°C (140°F to 158°F)

IEC 60068-2-30

IEC 60068-2-6

IEC 60068-2-64

IEC 60068-2-27

Altitude de-rating

Over-voltage category

Degree of pollution

30W/1000m or 5°C/1000m

III

II

2

Without any restrictions

Reduce output power or ambient

temperature, see Fig. 15-2

IEC 62103, EN 50178, overvoltage category II

> 2000m (6500ft), see Fig. 15-2

IEC 62103, EN 62477-1, altitudes up to 2000m

For altitudes from 2000m to 6000m

IEC 62103, EN 62477-1, not conductive

LABS compatibility 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 22.4.

**) Do not energize while condensation is present.

Fig. 15-1 Output current vs. ambient temp. Fig. 15-2 Output current vs. altitude

Allowed Output

Current at 48V

15A

12.5

10

7.5

5

2.5

0

-25 for typ. 4s continuous

Ambient Temperature

0 20 40 60 70°C

Allowed Output

Current at 48V

15A for typ. 4s

12.5

10

7.5

continuous

5

2.5

0

0

A... Tamb < 60°C

B... Tamb < 50°C

C... Tamb < 40°C

2000 4000

A

B

C

Altitude

6000m

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16. P

ROTECTION

F

EATURES

Output protection

Degree of protection

Penetration protection

Over-temperature protection

Electronically protected against overload, no-load and short-circuits *) max. 60Vdc

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.

IP 20

> 3.5mm yes

Input transient protection

Internal input fuse

MOV (Metal Oxide Varistor)

Not included

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

EN/IEC 60529

E.g. screws, small parts

Output shut-down with automatic restart

17. S

AFETY

F

EATURES

Input / output separation *) SELV

Class of protection

PELV

I

Isolation resistance

PE resistance

> 500MOhm

< 0.1Ohm

Touch current (leakage current) typ. 0.44mA / 0.94mA typ. 0.62mA / 1.31mA

*) double or reinforced insulation max. 0.54mA / 1.12mA max. 0.78mA / 1.62mA

IEC/EN 60204-1, EN 62477-1, IEC 62103, IEC 60364-4-41

PE (Protective Earth) connection required

Input to output, 500Vdc

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




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18. D

IELECTRIC

S

TRENGTH

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. 18-1 Dielectric strength

Type test

A B C D

60s 2500Vac 3000Vac 500Vac 500Vac

Input

L1

L2

L3

B

*)

DC-ok

Factory test

Field test

5s

5s

2500Vac

2000Vac

Cut-off current setting > 10mA

2500Vac

2000Vac

> 10mA

500Vac

500Vac

> 30mA

500Vac

500Vac

> 1mA

A

Earth

C

B

D

Output

+

-

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.

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.

19. A

PPROVALS

EC Declaration of Conformity

IEC 60950-1 2 nd

Edition

UL 508

UL 60950-1, 2 nd Edition

ANSI / ISA 12.12.01-2007

(Class I Div 2)

Marine

EAC TR Registration

IND. CONT. EQ.

The CE mark indicates conformance with the

- EMC directive and the

- Low-voltage directive

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

Applicable for altitudes up to 2000m.

Recognized for use in Hazardous Location Class I Div 2 T4

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

Canada (C22.2 No. 213-M1987)

GL (Germanischer Lloyd) classified and ABS (American Bureau for Shipping) PDA Environmental category: C, EMC2 Marine and offshore application

Registration for the Eurasian Customs Union market

(Russia, Kazakhstan, Belarus)

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20. P

HYSICAL

D

IMENSIONS AND

W

EIGHT

Width

Height

Depth

Weight

DIN-Rail

65mm 2.56’’

124mm 4.88’’

127mm 5.0’’

The DIN-rail height must be added to the unit depth to calculate the total required installation depth.

870g / 1.92lb

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

Housing material Body: Aluminium alloy

Cover: zinc-plated steel

Installation clearances

See chapter 2

Fig. 20-1 Front view Fig. 20-2 Side view

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21. A

CCESSORIES

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21.1. ZM1.WALL

– W

ALL

/P

ANEL MOUNTING BRACKET

This bracket is used to mount the QT20 power supply on a wall/panel without utilizing a DIN-

Rail.

The two aluminum brackets and the black plastic slider of the unit have to be detached, so that the steel brackets can be mounted.

Fig. 21-1 Wall/panel mounting Fig. 21-2 Mounting Dimensions - Wall mounting bracket

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21.2. ZM14.SIDE

S

IDE

M

OUNTING

B

RACKET

This bracket is used to mount the QT20 power supply sideways with or without utilizing a DIN-

Rail.

The two aluminum brackets and the black plastic slider of the unit have to be detached, so that the steel brackets can be mounted.

For sideway DIN-rail mounting, the removed aluminum brackets and the black plastic slider need to be mounted on the steel bracket.

Fig. 21-3

Side mounting without DINrail brackets

Fig. 21-4

Side mounting with DIN-rail brackets

Fig. 21-5

Mounting Dimensions

Side mounting bracket

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21.3. UF20.481

B

UFFER MODULE

This buffer unit is a supplementary device for DC 48V power supplies. It delivers power to bridge typical mains failures or 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 the integrated electrolytic capacitors. In case of mains voltage fault, this energy is released again in a regulated p rocess.

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.

AC

DC

Power

Supply

Buffer

Unit(s)

Load

+

-

21.4. YR40.482

R

EDUNDANCY

M

ODULE

The YR40.482 redundancy module is equipped with two input channels (20A each), which are individually decoupled by utilizing MOSFET technology. The output current can go as high as 40A.

Using MOSFET instead of diodes reduces the heat generation and the voltage drop between input and output. The YR40.482 does not require an additional auxiliary voltage and is self-powered even in case of a short circuit across th e output.

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

DIN-rail.

Fig. 21-6 Typical 1+1 Redundant configuration for 10A with one dual redundancy module und two power supplies

Fig. 21-7 Typical N+1 Redundant configuration for 30A with two dual redundancy modules and four power supplies

10A

Load

30A

Load

+ +

- -

48V,10A

DC-

OK

QT20.481

L1 L2 L3 PE

+

-

Output

YR40.482

Redundancy

Module

Input

+

1

Input

2

+ -

+ +

- -

48V,10A

DC-

OK

QT20.481

L1 L2 L3 PE

Failure

Monitor

+ +

- -

48V,10A

DC-

OK

QT20.481

L1 L2 L3 PE

+ -

Output

YR40.482

Redundancy

Module

Input

1

+

Input

2

+ -

+ +

- -

48V,10A

DC-

OK

QT20.481

L1 L2 L3 PE

+ +

- -

48V,10A

DC-

OK

QT20.481

L1 L2 L3 PE

+ -

Output

YR40.482

Redundancy

Module

Input

1

+

Input

2

+ -

+ +

- -

48V,10A

DC-

OK

QT20.481

L1 L2 L3 PE

Failure

Monitor

L1

L2

L3

PE

I I I I I I

L1

L2

L3

PE

I I I I I I I I I I I I

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PPLICATION

N

OTES

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22.1. R

EPETITIVE

P

ULSE

L

OADING

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. 22-2) to check if the average output current is below the nominal current.

d) The duty cycle must be below 0.75.

Fig. 22-1 Repetitive pulse loads, definitions Fig. 22-2 Max. duty cycle curve

P

PEAK

T

PEAK

T

0

Duty Cycle

0.75

0.6

P

0

P

0

P

0

= 10%

= 50%

= 75% max.

150%

100%

0.4

P

0

0.2

P

0

= 100%

P

PEAK

0

100 110 120 130 140 150%

P

0

Base load (W)

P

PEAK

Pulse load (above 100%)

T

0

Duration between pulses (s)

T

PEAK

Pulse duration (s)

T peak

D uty

C ycle

=

T peak +

T

0

T

0

=

T peak

(D uty

C ycle

x T peak

)

D uty

C ycle

Example: A load is powered continuously with 240W (= 50% of the rated output load). From time to time a peak power of 720W (= 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 P

0

= 50% curve. Read the max. duty cycle from the duty cycle-axis (= 0.37)

- Calculate the required pause (base load) length T

0

:

- Result: The required pause length = 1.7s

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

More examples for pulse load compatibility:

T

0

=

T peak

(D uty

C ycle

x T peak

)

=

1s (0.37 x 1s)

D uty

C ycle

0.37

= 1.7s

P

PEAK

P

0

T

PEAK

T

0

P

PEAK

P

0

T

PEAK

T

0

720W 480W 0.1s >0.16s

720W 0W 1s >1.3s 720W 240W

0.75s 3s >4.9s

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22.2. P

EAK

C

URRENT

C

APABILITY

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. 22-3 Peak load with 2x the nominal current for 50ms, typ.

Fig. 22-4 Peak load with 4x the nominal current for 5ms, typ.

48V

Output

Voltage

48V

Output

Voltage

34.2V

30.6V

40A

20A

0A

Output

Current

20ms/DIV

20A Peak load (resistive) for 50ms

Output voltage dips from 48V to 30.6V.

0A

Output

Current

2ms/DIV

40A Peak load (resistive) for 5ms

Output voltage dips from 48V to 34.2V.

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

Peak current voltage dips typ. typ. typ. from 48V to 30.6V At 20A for 50ms, resistive load from 48V to 39V At 40A for 2ms, resistive load from 48V to 34.2V At 40A for 5ms, resistive load

22.3. E

XTERNAL

I

NPUT

P

ROTECTION

The unit is tested and approved for branch circuits up to 15A (U.S.A.) and 16A (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 3A C-Characteristic breaker should be chosen.

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22.4. U

SING ONLY

2 L

EGS OF A

3-P

HASE

S

YSTEM

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

This power supply can also be permanently operated on two legs of a 3phase system. However, it is not recommended for this power class since the supplying 3-phase network can become unbalanced.

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.

L1

L2

L3

PE open

Power Supply

L1

L2

L3

AC

DC

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.

Fig. 22-5

Output current vs. ambient temperature -

2-phase operation

Fig. 22-6

Hold-up time – 2-phase operation

Allowed Output Current at 48V

15A for typ. 4s

12.5

10

7.5

5

2.5

0

-25 continuous

A... 2x 460 to 552Vac

B... 2x 340 to 460Vac

B A

Ambient Temperature

0 20 40 60 70°C

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

Three Phase System

50ms

48V, 5A, typ.

40

48V, 5A, min.

30

20

48V, 10A, typ.

48V, 10A, min.

10

Input Voltage

0

320 360 400 440 2x480Vac

22.5. C

HARGING OF

B

ATTERIES

The power supply can be used to charge lead-acid or maintenance free batteries. (Four 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 55.0V 54.3V 53.6V

Battery temperature 20°C 30°C 40°C b) Use a 15A or 16A 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. 14mA when the power supply is switched off (except in case a blocking diode is utilized).

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22.6. O

UTPUT

C

IRCUIT

B

REAKERS

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 48V 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.

Power Supply

AC

DC

+

-

Fig. 22-7 Test circuit

MCB

Wire length

S1

+

-

Load

Maximal wire length

*)

for a fast (magnetic) tripping:

0.75mm² 1.0mm² 1.5mm² 2.5mm²

C-2A

C-3A

C-4A

C-6A

34m 44m 64m 48m

13m 15m 24m 35m

2m 4m 4m 9m

B-6A 16m 19m 28m 42m

S1... Fault simulation switch

B-10A

B-13A

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

22.7. S

ERIES

O

PERATION

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.

Unit A

AC

Avoid return voltage (e.g. from a decelerating motor or battery) which is applied to the output terminals.

+

-

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 (input terminals on the bottom of the unit).

Unit B

AC

+

+

-

Load

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

DC

-

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22.8. P

ARALLEL

U

SE TO

I

NCREASE

O

UTPUT

P

OWER

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) or the units can be left with the factory settings.

Unit A

AC

+

If more than three units are connected in parallel, a fuse or circuit breaker with a rating of 15A or 16A is required on each output. Alternatively, a diode or redundancy module can also be utilized. Unit B

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 parallel in mounting orientations other than the standard mounting orientation (input terminals on the bottom of the unit)

AC

DC

+

or in any other condition where a derating of the output current is required (e.g. altitude, above 60°C, …).

+

-

Load

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

22.9. P

ARALLEL

U

SE FOR

R

EDUNDANCY

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 10A are paralleled to build a 40A redundant system. For N+1 redundancy the same restrictions apply as for increasing the output power, see also

chapter 22.8.

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 21.4.

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) Monitor the individual power supply units. Therefore, use the DC-OK relay contact of the QT20 power supply. c) It is desirable to set the output voltages of all units to the same value (± 100mV) or leave it at the factory setting.

22.10. I

NDUCTIVE AND

C

APACITIVE

L

OADS

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

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Q-Series

QT20.481

48V, 10A, T

HREE

P

HASE

I

NPUT

22.11. B

ACK

-

FEEDING

L

OADS

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 58Vdc. The absorbing energy can be calculated according to the built-in

output capacitor which is specified in chapter 6.

22.12. U

SE IN A

T

IGHTLY

S

EALED

E

NCLOSURE

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:

Rittal Typ IP66 Box PK 9519 100, plastic, 180x180x165mm

48V, 8A; (=80%) load is placed outside the box

Temperature inside enclosure: 55.1°C (in the middle of the right side of the power supply with a distance of 2cm)

Temperature outside enclosure: 24.9°C

Temperature rise: 30.2K

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Q-Series

QT20.481

48V, 10A, T

HREE

P

HASE

I

NPUT

22.13. M

OUNTING

O

RIENTATIONS

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

Fig. 22-8

Mounting

Orientation A

(Standard orientation)

Recommended output current.

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

OUTPUT

Power

Supply

INPUT

Output Current

10A

8

6

4

2

0

10 20

A1

Ambient Temperature

30 40 50 60°C

Fig. 22-9

Mounting

Orientation B

(Upside down)

Fig. 22-10

Mounting

Orientation C

(Table-top mounting)

Fig. 22-11

Mounting

Orientation D

(Horizontal cw)

Fig. 22-12

Mounting

Orientation E

(Horizontal ccw)

UT y er

T

OUTP

Pow

Suppl

INPU

Output Current

10A

8

2

0

6

4

10 20

A2

A1

Ambient Temperature

30 40 50

Output Current

10A

8

6

4

2

0

10 20

A2

A1

Ambient Temperature

30 40 50

Output Current

10A

8

6

4

2

0

10 20

Ambient Temperature

30 40

A2

A1

50

Output Current

10A

8

6

4

2

0

10 20

A2

A1

Ambient Temperature

30 40 50

60°C

60°C

60°C

60°C

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Puls QT20.481 DIN rail power supply Owner's Manual

Assistant Bot

ENERAL

ESCRIPTION

RDER

UMBERS

OWER

UPPLY

HORT

FORM

ATA

ARKINGS

NDEX

ERMINOLOGY AND

BREVIATIONS

NTENDED

SE

NSTALLATION

EQUIREMENTS

NPUT

NPUT

NRUSH

URRENT

NPUT

UTPUT

OLD

UP

IME

ELAY

ONTACT

FFICIENCY AND

OWER

OSSES

IFETIME

XPECTANCY AND

UNCTIONAL

IAGRAM

ERMINALS AND

IRING

RONT

IDE AND

SER

LEMENTS

NVIRONMENT

ROTECTION

EATURES

AFETY

EATURES

IELECTRIC

TRENGTH

PPROVALS

HYSICAL

IMENSIONS AND

EIGHT

CCESSORIES

ALL

ANEL MOUNTING BRACKET

IDE

OUNTING

RACKET

UFFER MODULE

EDUNDANCY

ODULE

PPLICATION

OTES

EPETITIVE

ULSE

OADING

EAK

URRENT

APABILITY

XTERNAL

NPUT

ROTECTION

SING ONLY

EGS OF A

HASE

YSTEM

HARGING OF

ATTERIES