'EMERGENCY SWITCH engaged' (labelled ‘NOT-AUS betätigt’) lights up, and the
RCCB trips and cannot be switched on. If multiple DFS 4 NA devices must be oper
-
ated via an emergency switch circuit, terminals S 21 and S 22 of the devices must be
connected in parallel.
Troubleshooting
If the red LED for 'EMERGENCY SWITCH engaged' lights up continuously even
though the emergency switch equipment has been reset, either there is a wire
breakage, a contact resistance higher than 3 kΩ or the device is faulty. To locate
the specific cause of the fault, proceed as follows: Switch the supply voltage of
the residual current circuit breaker off and short-circuit terminals S 21 and S 22
directly on the device. If the red LED continues to light up after the supply voltage is
reconnected, the RCCB is faulty. If the red LED no longer lights up, the cause of the
fault lies in the system.
Warranty
All professionally installed, unaltered devices are covered by warranty during the
statutory guarantee period from the day of purchase by the end user. The warranty
is not applicable to damage incurred during transport or caused by short-circuit,
overloading or improper use. In the event of defects in workmanship or material,
which are discovered within the warranty period, the company will provide repair or
replacement free of charge. The warranty will be rendered null and void if the device
is opened without authorisation.
Wiring diagram
1(N)
7(N)
3 5
8(N)
2(N) 4 6
~
S 21 S 22
Not-Aus-Kreis
emergency off circuit
V
Four-pole neutral conductor left or right depending on device design
rot / red
grün / green
V
Position and colour of LEDs. Type A RCCBs only have the red LED.
Installation and operating instructions
for residual current circuit-breakers of model range
DFS 4 NA
This installation and operating manual is aimed at qualified electrical specialists. The
installation of devices of this type is not appropriate for electrical laypersons due to
the considerable potential dangers. The installation and operating manual must be
kept so that it can be referred to at a later stage. The operator of the electrical system
must be informed about the application and function of this protective device.
Application instructions and warnings
1. Devices with visible damage must not be installed or used.
2. Operation must only occur under normal ambient conditions free of corrosive
gases in order to preserve the correct tripping function in the long term. Corrosive
gases include chlorine, ammonia and sulphur.
3. The function test with the test key is not a substitute for regular testing of the
system.
4. Erroneous tripping due to operation related leakage currents or atmospheric in
-
terference cannot be ruled out with absolute certainty. The consequences must
be considered and countermeasures taken where necessary. Short-time delayed
or selective devices and surge protection measures and system optimisations can
provide a remedy.
5. If the RCCB cannot be switched on, even if the consumer network is not connected
and the emergency switch circuit is not active, the device must be replaced.
6. The residual current circuit-breaker provides FELV (functional extra-low voltage)
to the emergency switch circuit. For this reason the emergency switch circuit
must be rated for a voltage of 230 V AC.
Intended use and installation
DFS 4 series protective devices are residual current circuit-breakers without inte
-
grated overcurrent protection. They provide protection through automatic switch-
off in electrical systems, e.g. in accordance with VDE 0100 part 410. They meet the
requirements for residual current protection in accordance with their characteristics
on the rating plate.
They are designed as modular DIN rail components for integration in distribution
boards or unit housings for installation on mounting rail TS 35. Protection against
direct contact according to protection class 2 must be ensured with the assistance of
the associated distribution unit or device covers.
A push-button which is accessible to laypersons enables testing of the switch off
function. An occasional test can also increase the endurance of the circuit-breaker as
the mechanism is moved when tripped.
Installation notes
Assembly occurs by means of quick fastening on mounting rails. The connection must
be made in accordance with the wiring diagram. Terminals 1, 3, 5 and 7 are used for
the supply.
Testing and functional check
A simple function test with the assistance of test key T must
be
undertaken
following
switching
on
of
the
mains
volt
-
age and the circuit-breaker. When the key is pressed the DFS 4
must switch off; the toggle is in centre position. Resetting to position '1'
is only possible if the toggle has firstly been moved to position '0'. The op
-
erating display beneath the toggle indicates the status of the contacts:
red = closed, green = open. This test must be carried out every six months, as a
minimum, under normal operating conditions and repeated every working day for
non-stationary systems. If tripping does not occur, the device must be replaced im
-
mediately. The operator must be informed of this. All additional tests are covered
by the prescribed inspection test. Tests should be carried out according to DGUV
Regulation 3 (BGV A3) depending on the location. The green LED of the AC-DC sen
-
sitive residual current circuit-breakers signals that the internal operating voltage is
sufficient for residual current detection which is sensitive to all currents (residual cur
-
rents type A and B). If the LED does not illuminate, then only tripping via type A re
-
sidual currents is still guaranteed. The internal supply of the residual current circuit-
breaker is carried out via terminals 1, 3, 5 and 7. At least two arbitrary conductors
must conduct AC voltage of greater than 50 V in order to guarantee residual current
detection that is AC-DC sensitive. When an insulation test of the electrical system is
performed using test devices in accordance with DIN EN 61557-2, the residual current
circuit-breaker must be switched off. Performing an insulation test when the device is
switched on or an insulation test on the side with the terminals 1, 3, 5 and 7 can lead to
erroneous measurement values as a result of the internal adaptor.
Emergency switch equipment function
The emergency switches are connected at terminals S 21 and S 22. The emergency
switches must be implemented as normally closed contacts so that switch-off oc
-
curs in the event of wire breakage. The emergency switch equipment is ready as soon
as the supply voltage is applied and the green LED lights up for 'operation type B'
(labelled ‘Betrieb Typ B’). If the emergency switch circuit is open, the red LED for
Technical data
DFS 4 NA
Rated current
16 A
25 A
40 A
63 A
Detection range
of residual current
type A: 50 Hz, type B: 0–100 kHz
type B+: 0–20 kHz
Rated frequency
50 Hz
Min.
operating
voltage
for detection of
residual currents
type A/AC
0 V (mains independent)
for detection
of residual
currents type B
50 V AC
Internal consumption
max. 3.5 W
Number of poles
four-pole
Working range of
test equipment
DFS 4 B NA
N left
250 V – 440 V
N right
150 V – 250 V
Dissipation power Pv (typ.)
0.2 W
0.5 W
1.3 W
3.1 W
Thermal backup fuse OCPD,
utilisation category gG
1)
16 A
25 A
40 A
63 A
Short-circuit backup fuse
SCPD, utilisation category gG
1)
100 A
Rated connection and discon-
nection capacity lm
500 A
630 A
Rated short-circuit con-
nection and disconnection
capacity I
Δ
m
500 A
630 A
Surge current strength
Ring-wave 0.5 ms / 100 kHz: 200 A,
impulse 8/20 µs: 3 kA
Shock resistance
20 g/20 ms duration
Installation position
optional
Max. operating altitude
2000 m above sea level
Input terminals
terminals 1, 3, 5, 7
Resistance to climatic
changes
according to IEC 68-2-30:
damp/heat, cyclic
(25°C/55°C; 93% rel. hum., 28 cycles)
Maximum number
of conductors per terminal
2 (of same type and cross-section)
Connector
cross-section
solid
1 × 1.5 ...50 mm² (1-conductor connection),
2 × 1.5 ...16 mm² (2-conductor connection)
flexible
1 × 1.5 ...50 mm² (1-conductor connection),
2 × 1.5 ...16 mm² (2-conductor connection)
stranded
1 × 1.5 ...50 mm² (1-conductor connection),
2 × 1.5 ...16 mm² (2-conductor connection)
Tightening torque
2.5 Nm to 3 Nm
Endurance
mechanical
> 5000 switching cycles
electrical
> 2000 switching cycles
Design requirements
DIN EN 61008-1,
DIN EN 62423, DIN VDE 0664-120
Ambient
temperature
standard
-25°C to 40°C
'HD' design
-25°C to 60°C
Vibration resistance
>
5 g (f ≤ 80 Hz, duration
>
30 min.)
Mounting
Mounting rail in accordance with EN 60715
Housing type
distribution board installation
Housing material
thermoplastic
Protection class
IP20 (IP40 in accordance with distribution
board installation)
Sealable
yes
Electromagnetic compatibility
DIN EN 61543
Weight
approx. 510 g
Dimensions (W x H x D in mm)
81 (4.5 module width units) x 85 x 75
1) DIN VDE 0636
Additional technical data for emergency switch equipment
Connector cross-section, solid and stranded
1 x 1 mm
2
to 1.5 mm
2
Tightening torque
max. 0.8 Nm
Output terminal for emergency switch circuit
S 21 and S 22
Type of output voltage at S 21 and S 22
FELV / 12 V in non-load operation /
1 mA in short-circuit
Auxiliary contact (changeover 11, 12, 14) for
signalling the switching status
max. 230 V AC / 6 A
max. 100 V DC / 1 A
Min. operating voltage for emergency switch
equipment function
50 V AC
maximum length of emergency-off-circuit
500 m
Doepke
3930270
|
04/2015
|
Doepke Schaltgeräte GmbH, Stellmacherstraße 11, D-26506 Norden
DE EN
