Doepke
The experts in residual current protection technology
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Selftest
»» Intelligent residual current circuit-breaker
»» Regular self-test without any
interruption to the power supply
»» Remote signalling
»» Certified safety
»» Automatic restart (selftest restart)
Automated function tests offer increased safety
Doepke's new 'Selftest' series of intelligent residual current cir-
back on within ten seconds, after testing the insulation resist-
cuit-breakers perform a self-test at regular intervals. Whereas
ance against earth. If the device detects a fault, it performs
previously self-tests used to have to be activated manually by
another test after two minutes. While there is still a fault, the
pressing the test button, these devices now do this automat-
test will be repeated every two minutes and there will be no
ically once a month. What's more there is a check to ensure
attempt to restart the system until there are no faults present.
that the switch is functioning properly. Bypass contacts provide
These functions provide increased safety as there is no longer
the power supply to the system during these self-tests, and a
any need to press the test button to manually test the protec-
programmable potential-free contact allows a log to be kept.
tive function, meaning there is no risk of someone forgetting
to do it. System availability is also increased if the power sup-
The 'Selftest Restart' has even greater functionality, with an
ply can be switched back on quickly by the Selftest Restart,
automatic restart function for instances of faulty tripping that
meaning losses incurred due to downtimes are also reduced.
may be caused by lightning strikes, transient leakage currents,
vibrations or a reduction in the insulation resistance caused by
Both devices are available in two and four-pole designs.
moisture or dirt. The Selftest Restart devices switch the power
Mounting and connection are both easy and intuitive.
Overview of characteristics
Functions
Selftest
Selftest Restart
3
3
3
3
3
3
Uninterruptible test
Bypass contacts ensure that the power supply
to the system is not interrupted during the
test. The protective function is unaffected.
Regular self-test
The Selftest devices automatically perform
a self-test at regular intervals.
Remote signalling
A configurable auxiliary contact provides the
option of passing on the successful self-test.
High availability in unoccupied systems
Selftest Restart guarantees operational
safety in systems that are not occupied at
all times and provides protection against
consequential damage caused by failures.
3
No attempt to restart in the event of a fault
Protection against personal injury and
damage to property is guaranteed by
testing the system before any
attempt is made to restart.
If there is a fault, a restart will not even be
attempted. The system is tested every two minutes
and the device will not be automatically
restarted until the fault is no longer present.
3
Speedy restart
The mechanism offers the maximum restart
speed and keeps downtimes to a minimum.
3
Compact design
The special mechanism allows for an
extremely compact design.
3
3
Doepke
Technical data
Type
Selftest/Selftest Restart
two-pole design
Selftest/Selftest Restart
four-pole design
Electrical properties
Standards
Selftest: EN 61008-1, VDE V 0664-120 (Annex M)
Selftest Restart: EN 61008-1, EN 50557
Network configuration
Selftest: TT-TN-IT
Selftest Restart: TT-TN
Rated voltage (Ue)
400 V AC
230 V AC1)
Minimum operating voltage (Ue min)
85% Ue
Maximum operating voltage (Ue max)
110 % Ue
Rated insulation voltage (Ui)
500 V
Insulation resistance
2500 V AC for 1 minute
Rated impulse withstand voltage (Uimp)
4 kV
Rated frequency
50 Hz
Rated short-circuit connection and
disconnection capacity (IΔm)
630 A
Short circuit resistance of the residual current
circuit-breaker in connection with fuses (IΔc)
10,000 (gL 63 A) at 25/40 A
10,000 (gL 80 A) at 63 A
Number of poles
2
4
Type of residual current operated protective device
A
Slow-blow (time delayed)
Yes
Surge current strength
3 kA
Rated current (IΔ)
25 A – 40 A – 63 A
Rated residual current
30 mA
Resistance to earth to block restart (Rdo)
Resistance to earth to enable restart (Rd)
Current heat loss per current path with In
30 mA
8 kΩ (30 mA) (only Selftest Restart)
16 kΩ (30 mA) (only Selftest Restart)
1.1 W (25 A) – 2.7 W (40 A) – 3.1 W (63 A)
Power consumption during normal operation
1.75 W (25 A) – 2 W (40 A) – 4 W (63 A)
4 VA (cos φ = 0.2)
Power consumption during restart
41 VA (cos φ = 0.55)
Restart function
Automatic (only Selftest Restart)
Supply
From the top
Mechanical properties
Number of module widths
Duration of restart
Duration of self-test
5
7
10 s (only Selftest Restart)
7 s
Maximum switching frequency
30/h
Mechanical switching cycles
(number of restarts)
4000
Maximum number of successive restart attempts2)
3 (only Selftest Restart)
Counter reset time for successive restart attempts
60 s (only Selftest Restart)
Wiring
Tightening torque
Protection class
≤ 35 mm2, flexible – ≤ 35 mm2, solid
2 Nm
IP 20 (clamps) – IP 40 (housing)
Ambient temperature3)
-25°C – +60°C
Weather resistance
55°C – RH 95%
Auxiliary contact properties
Doepke
Schaltgeräte GmbH
Stellmacherstrasse 11
26506 Norden, Germany
Tel.
+49 4931 1806-0
Fax
+49 4931 1806-101
Email: info@doepke.de
www.doepke.de
PhotoMOS
Operating voltage
5 – 230 V AC/DC
Maximum current
100 mA (cos φ = 1)
Minimum current
0.6 mA
Frequency
50 Hz
Utilisation category
AC 12
Type of contact
Wiring
Tightening torque
Key:
1) 230 V phase – neutral conductor
2) In a system with no faults
3) Average daytime temperature <= 35 °C
4) Contact closes for 100 ms after every successful self-test
Make contact/Break contact/Break contact with impulse4)
≤ 2.5 mm2
0.4 Nm
Document no 5900249-A | V 04/2015 | © Doepke Schaltgeräte GmbH
Subject to technical modifications.
Type of contact