Warranty
All professionally installed, unaltered devices are covered by warranty during the
statutory warranty 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
being 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
N
7
3 5
8
N 4 6
~
12 14 11
S 21 S 22
Not-Aus-Kreis
emergency off circuit
V
Four-pole, neutral conductor on the left
S 21
S 22
V
Wiring of multiple DHS 4 NA connected to one emergency switch circuit
Installation and operating instructions
for switch-disconnectors
in the DHS 4 NA series
These installation and operating instructions are aimed at qualified
electrical specialists. The installation of devices of this type is not
appropriate for electrical laypersons due to the considerable potential
dangers. These installation and operating instructions must be
retained, so that they 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 function in the long term. Corrosive gases
include chlorine, ammonia and sulphur gases.
3.
If the device 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.
4.
The switch-disconnector 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
Switch-disconnectors conforming to IEC 60947-3 are particularly well suited for
use in main and sub-distribution boards. In combination with the emergency stop
function, system parts can be safely disconnected under load or overload in the
event of an emergency. The device can be switched off directly on the device itself or
remotely using a compatible emergency switch.
The emergency switch circuit must be tested regularly. This will increase the
endurance of the switch-disconnector, as the mechanism is moved when tripped.
The integrated auxiliary switch signals the switching status and is designed as a
potential-free changeover contact.
Mounting and installation
They are designed as modular DIN rail components for integration in distribution
boards or unit housings for installation on mounting rail TS 35 as of EN 60715.
Protection against direct contact according to protection class 2 must be ensured
with the assistance of the associated distribution board or device covers.
Assembly occurs by means of snapping on to the mounting rail. The connection must
be made in accordance with the wiring diagram. Terminals N, 3, 5 and 7 are used for
the supply.
Emergency switch equipment function
The emergency switches are connected at terminals S 21 and S 22. It is possible to
use either one single switch or several switches (switched in series). The emergency
switches must be implemented as normally closed contacts so that switch-off occurs
in the event of wire breakage. The emergency switch equipment is ready as soon as
a single-phase supply voltage of at least 50 V AC is applied. If the emergency switch
circuit is open, the red LED labelled 'NOT-AUS betätigt’ (for 'emergency switch
engaged') lights up, and the switch-disconnector is open and cannot be switched
on. If multiple DHS 4 NA devices must be operated via an emergency switch circuit,
terminals S21 and S22 of the devices must be connected in parallel.
Testing and functional check
All tests are covered by the prescribed inspection test. Tests should be carried out
according to DGUV Regulation 3 (BGV A3) depending on the location. When an
insulation test of the electrical system is performed using test devices in accordance
with DIN EN 61557-2, the switch-disconnector must be switched off. Performing an
insulation test when the device is switched on or an insulation test on the input side
(terminals N, 3, 5 and 7) can lead to erroneous measurement values as a result of the
internal adaptor.
Troubleshooting
If the red LED ‘NOT-AUS betätigt’ (for 'emergency switch engaged') lights up
continuously even though the emergency switch equipment has been reset, either
there is a wire breakage or a contact resistance higher than 3 kΩ, or the DHS 4 NA
is faulty. To locate the specific cause of the fault, proceed as follows: Switch the
supply voltage of the switch-disconnector off and short-circuit terminals S21 and S22
directly on the device. If the red LED continues to light up after the supply voltage is
reconnected, the device is faulty. If the red LED no longer lights up, the cause of the
fault lies in the system.
Technical data
DHS 4 NA
Rated current
63 A
80 A
100 A
125 A
Rated impulse withstand voltage
4 kV
Internal consumption
max. 3.5 W
Utilisation category
AC – 22a
Rated voltage
400 V
Rated short-circuit current
10 kA
Dissipation power Pv (typ.)
per current path
3.1 W
5 W
7.5 W
11.2 W
Thermal back-up fuse OCPD, utilisation
category gG, as per DIN VDE 0636
63 A
80 A
Short-circuit back-up fuse SCPD,
utilisation category gG, as per
DIN VDE 0636
100 A
125 A
Shock resistance
20 g/20 ms duration
Installation position
optional
Max. operating altitude
2000 m above sea level
Input terminals
Terminals N, 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 the same type and cross section)
Connecting capacity
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
> 2,000 switching cycles
Design requirements
EN 60947-3
Ambient temperature
-25°C to 40°C
Vibration resistance
>
5 g (f ≤ 80 Hz, duration
>
30 min.)
Mounting
Mounting rail
in accordance with EN 60715
Housing type
Distribution board housing
Housing material
Thermoplastic
Protection class
IP20 (IP40 in accordance with
distribution board installation)
Sealable
Yes
Weight
Approx. 510 g
Dimensions (W x H x D in mm)
81 (4.5 module width units) x 85 x 75
Technical data for emergency switch equipment
Connecting capacity,
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 closed 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 cable length
of emergency switch circuit
500 m
Doepke
3930278
|
10/2016
|
Doepke Schaltgeräte GmbH, Stellmacherstraße 11, D-26506 Norden
DE EN
