Fault current monitoring
Number of meas. channels
The current transformers including the conductor isolation
must guarantee in total a reinforced or double insulation
between the mains circuit connected on the primary side and
the measuring inputs of the device.
Use only transformers intended for this application, according
to our current transformer catalog, or transformers that fulfi ll
the specifi cation listed in the device handbook.
Only one measurement range may be connected per measu-
ring channel!
Uninterruptible power supply (UPS)
Type (3,7V):
VARTA Easy Pack EZPAckL, UL listed MH16707
Cross sections and tightening torques
Inputs L1(2), L2(5), L3(8), N(11), I1(1-3), I2(4-6), I3(7-9),
power supply (13-14)
- Single wire: 1 x 0.5 ... 6.0mm
- Multiwire with end splices: 1 x 0,5 ... 4.0mm
- Torque: 0.5 ... 0.6 Nm rsp. 4.42 ... 5.31 lbf in
I/O's relays and RS485 connection A,B,C/X
- Single wire: 1 x 0,5 ... 2.5mm
- Multiwire with end splices: 1 x 0.5 ... 2.5mm
- Torque: max. 0.5 Nm rsp. 4.42 lbf in
Ambient conditions, general information
Operating temperature:
–10 up to 15 up to 30 up to + 55°C (without UPS)
0 up to 15 up to 30 up to + 35° C (with UPS)
Altitude:
≤ 2000 m max.
Device to be used indoor only!
Safety
The current inputs are galvanically isolated from each other.
Protection class:
II (protective insulation, voltage inputs via
protective impedance)
Pollution degree:
2
Protection:
IP54 (front), IP30 (housing), IP20 (terminals)
The device uses the principle of protective impedance for the
voltage inputs to ensure protection against electric shock. All
circuits of the device are tested during fi nal inspection.
Prior to performing high voltage or isolation tests involving the voltage
inputs, all output connections must be removed. A possible high-voltage
test between input and output circuits must be limited to 500V DC,
otherwise electronic components can be damaged.
Universal heavy current measuring unit
For grounded systems (optional)
2 (2 measurement ranges each)
2
2
or 2 x 0.5 ... 2.5mm
2
or 2 x 0.5 ... 2.5mm
2
2
or 2 x 0.5 ... 1.0mm
2
or 2 x 0.5 ... 1.5mm
1
2
Device may only be disposed of in a professional manner
2
Double insulation, device of protection class 2
CE conformity mark
Caution! General hazard point. Read the operating instructions.
General symbol: Input
General symbol: Output
CAT III
Measurement category CAT III for current and voltage inputs and
power supply
Safety instructions
5