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Rev. 3.00
22067_EDEBD
A0239-3617-3_EN
14
KBR multimess F144-2-LED-ESMS...-4
CAUTION
The control voltage as well as the applied measuring voltage of the device must
be protected by means of a back-up fuse.
When connecting the current transformers, pay attention to the energy fl ow
direction and the correct assignment to the voltage paths!
Power supply:
The electrical installation of the building must have a disconnec-
tor or circuit-breaker for the power supply voltage.
The disconnector must be close to the device and be easily accessible to the
user.
It must be marked as an isolating switch for this device.
The isolating switch must be UL/IEC-approved.
Voltage measurement:
The disconnector must be close to the device and be easily accessible to the
user.
It must be marked as an isolating switch for this device. The isolating switch
must be UL/IEC-approved.
CAUTION
Do not apply DC voltage to the voltage measurement input.
CAUTION
The device is not suitable for DC voltage measurement.
CAUTION
Attach the current transformer terminal to the device with two screws.
CAUTION
Never operate open external unloaded current transformers. Always short-
circuit them. Risk of injury from high voltages and currents.
Installation and electrical connection