Doepke DFS 4 B SK Series Installation And Operating Manual - Page 2

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Doepke

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Installation and Operating Manual

residual current circuit-breakers of series

DFS 4 B SK / F60 / V500 / V500 F60 / S / S V500

Installation position

Any installation position may be used.

Intended use and mounting

By snapping onto top-hat rail and for installation in distribution boards with compli-

ant covers for preventing direct contact with hazardous live parts.

Electrical connection

Guide all active conductors and outer cables (L1, L2, L3 and the neutral conductor

MP/N) through the switch. When doing so, pay attention to the energy flow direction,

i. e., the input terminals are 1, 3, 5, 7, the consumer system side is 2, 4, 6, 8. Scrape and

grease aluminium conductors immediately before connection.

Function and area of application

The residual current circuit-breakers of the DFS 4 B SK model ranges are AC-DC sen-

sitive residual current circuit-breakers for detecting Type B residual currents. These

devices are designed for use in single- and multi-phase mains systems. They are not

intended for use in DC networks. They consist of a mains voltage-independent part

for detecting sinusoidal AC and pulsating DC residual currents with a rated frequen-

cy of 50 Hz (rated frequency of 60 Hz with series F60), as well as a mains voltage-

dependent part for detecting residual currents within a frequency range of 0 Hz to

100 kHz.

In order to ensure protection in the event of indirect contact with a maximum touch

voltage of 50 V resp. 25 V across the entire covered frequency range, the earth re-

sistance must be < 167 Ohm resp. < 83 Ohm, when a residual current circuit-breaker

with a rated residual current < 300 mA is used. When using residual current circuit-

breakers with a rated residual current of 500 mA, the earth resistance must be < 100

Ohm resp. < 50 Ohm.

For frequencies > 1 kHz the tripping current for a DFS 4 B SK is below 2 A. This means

that highest possible system availability is ensured in this frequency range, within

which the usual switching frequencies of frequency converters are located.

Testing and functional check

An insulation test of the user equipment is to be carried out in accordance with DIN

EN 61557-2. This may only be done when the device is switched off. Insulation test-

ing when the device is switched on or insulation testing on the input side may lead

to incorrect measured values. A functional inspection of the residual current circuit-

breaker itself is possible with connected mains voltage by pressing the test button T

and, as in commercial use (BGV A3), should be carried out at least every six months in

the case of stationary systems and should be repeated every working day in the case

of non-stationary systems.

The green LED signals that the internal operating voltage is sufficient for AC-DC sen-

sitive residual current detection (residual currents of type AC, A and B). If the LED

does not illuminate, then only tripping via type AC and A residual currents is still guar-

anteed. The internal supply of the DFS 4 B SK is carried out via the terminals 1, 3, 5,

7. At least two arbitrary conductors must conduct AC voltage of greater than 50 V in

order to guarantee residual current detection that is sensitive to all currents.

Important information on operation with electronic equipment (such as frequency

converters, inverters etc.)

1. Electronic equipment and its associated EMC protective provisions, such as e. g.

integrated or in series-connected EMC filters, as well as shielded cables, can give

rise to high capacitive leakage currents.

2. The maximum number of items of electronic equipment connected downstream

of the DFS 4 B SK is based on the level of leakage currents that occur. Excessive

discharge currents may lead to undesired tripping in spite of the special release

frequency response. Relevant information concerning the discharge currents that

are produced can be requested from the manufacturers of the electronic equip-

ment.

3. During operation with frequency converters long, shielded motor cables may lead

to high discharge currents in the event of the controller release of the frequency

converter, which lead to undesired tripping. If necessary, a sinusoidal output filter

should then be used directly behind the frequency converter (before the shielded

motor cable).

4. When switching on and off electrical systems with electronic equipment, it is pos-

sible that very high surge leakage currents will be produced, which will lead to

tripping in the event of an appropriate duration. In order to keep the processes

for switching on and off as short as possible, the electrical system should not be

switched on with the DFS 4 B SK. Quick-switching, all-pole contactors or switches

with stored energy operating mechanisms are suitable (manual rotary switches

should not be used).

5. According to the instructions, a conventional 3-conductor EMC filter should only

be connected in series with the relevant electronic equipment. So that the filter

3930228 | 05/2013 | Doepke Schaltgeräte GmbH, Stellmacherstraße 11, D-26506 Norden

effect is not impaired, under no circumstances should further single-phase con-

sumers such as incandescent bulbs be connected on the output side of the EMC

filter.

6. As a rule, different clock frequencies (chopper) can be selected in the case of elec-

tronic equipment. In an unfavourable case, the clock frequency may lead to a ten-

dency to oscillation in an upstream EMC filter and therefore to greatly increased

leakage currents, which then result in a tripping of the DFS 4 B SK. In this case, the

clock frequency must be changed.

7. Frequency converters with an integrated EMC filter often only allow a maximum

length of the shielded motor cable of 5 to 10 m. Longer cable lengths lead to

greatly increased discharge currents and to the ineffectiveness of the integrated

EMC filter. The manufacturer's specifications must always be observed for the

frequency converter.

Application instructions and warnings

The following notes and warnings must be observed in order to ensure safe operation:

1. Installation may only be carried out by an authorised specialist, who is familiar

with the relevant national installation regulations.

2. Without any additional protective housing, residual current circuit-breakers

should only be stored and operated in a dry, low-dust environment. An aggressive

atmosphere must also be avoided.

3. The user must be made aware of repeat testing using the test button T.

4. Using surge current strength residual current circuit-breakers cannot absolutely

guarantee to rule out trips due to leakage currents caused by surge voltage. In

cases where an interruption of the power supply may lead to potential dangers for

humans and animals or serious damage to property, residual current protection

should be implemented by means of increased surge current strength, selective

residual current circuit-breakers and upstream surge arresters. In specific cases,

the switching status should be monitored by means of an auxiliary contactor at

the residual current circuit-breaker and an appropriate signalling device.

5. The guarantee will be rendered null and void if the device is opened.

Wiring diagrams

1 3

2 4

V two-pole

(N)

1 3 5

(N)

(N) 2 4 6

(N)

V four-pole, neutral on left or right, depending on device version

Technical Data

DFS 4 B SK / F60 / V500 / V500 F60 / S / S V500

Rated current

Rated residual current I �N

Detection range of residual

current

Rated

voltage U n

DFS 4 B

Rated

frequency

DFS 4 B

min.

operating

voltage

Internal consumption

Working

range of

test circuit

DFS 4 B

number of poles

Dissipation power P v (typ.)

Thermal back-up fuse

OCPD,

utilization category gG

Short-circuit back-up fuse

SCPD,

utilization category gG

Tripping times

Tripping times selective

Rated switching capacity I m

Rated short-circuit switching

capacity I �m

Rated short-circuit current I nc

Rated residual short-circuit

current I �c

Surge current strength

Shock resistance

Type of protection

Installation position

Supply side

Ambient temperature

Resistance to climatic

changes

Terminals

min. cross section

Tightening torque of

terminals

Endurance

Design requirements

Electromagnetic compat-

ibility

Weight

Dimensions

DIN VDE 0636, IEC 60269

16 A

25 A

40 A

63 A

80 A 100 A 125 A

0.03 A; 0.1 A; 0.3 A; 0.5 A

0 – 100 kHz

SK, SK F60, SK S

230/400 V AC

SK V500

SK V500 F60

290/500 V AC

SK S V500

SK, SK S,

SK V500,

50 Hz

SK S V500

SK F60,

60 Hz

SK V500 F60

for detection of

residual currents

0 V (mains independent)

Type A/AC

for detection of

residual currents

50 V AC

Type B

max. 3.5 W

SK, SK F60, SK S

185 V AC – 440 V AC

SK V500,

SK V500 F60,

185 V AC – 500 V AC

SK S V500

two-pole, four-pole

0.5 W 1.2 W 2.9 W 7.2 W 12 W

16 A

25 A

40 A

63 A

100 A

1 x I �n ≤ 300 ms; 5 x I �n ≤ 40 ms

1 x I�n > 130 ms ≤ 500 ms;

5 x I�n > 50 ms ≤ 150 ms

500 A

630 A 800 A 1000 A 1250 A

500 A

630 A 800 A 1000 A 1250 A

10 kA

Ring-wave 0.5 ms / 100 kHz:

200 A, impulse 8/20 µs: 3 kA

20 g / 20 ms duration

IP 40 (after installation in distribution board)

optional

terminals 1, 3, 5, 7

-25 °C to +40 °C

conforming to IEC 68-2-30: damp/heat,

cyclic (25 °C / 55 °C; 93 % / 97 % rel. hum., 28 cycles)

1 x 1.5 – 50 mm²

round-wire, solid

2 x 1.5 – 16 mm²

1 x 1.5 – 50 mm²

stranded

2 x 1.5 – 16 mm²

1 x 1.5 – 35 mm²

flexible

2 x 1.5 – 16 mm²

50 mm²

3 Nm

mechanical

> 5,000 cycles

electrical

> 2,000 cycles

DIN EN 61008-1, DIN EN 62423

DIN EN 61 543

(interference resistance – industrial environment)

approx. 500 g

W 72 mm (4 module width) × H 85 mm × D 75 mm

18 W

28 W

80 A

125 A