Operating Manual
Arc fa
ult protection ZŁ-4A; (07.2019)
9
Commissioning of device
During a startup of the device its rating plate and the following elements should be care-
fully checked:
continuity of grounding circuits,
fuses,
compliance of values of auxiliary power supply voltage,
compliance of values of measured quantities (voltage),
correctness of applied protections of voltage circuits (nominal values of fuse links
or nominal - currents and characteristics of automatic circuit breakers),
maximum load of relay outputs,
compliance of voltage values of switching outputs,
correctness of mounting all circuits .
Operating of device
The unit should operate in the environment specified in technical data.
Personnel operating the device should be authorized and acquainted with operat-
ing manuals.
Opening the casing
Before starting any activities that require opening the device casing, one should
obligatorily switch off all the measurement and auxiliary voltage supplies and
disconnect all terminals blocks. The dangerous voltage may appear on the de-
vice elements during 1 min after isolating the circuit.
The applied integrated circuits are very sensitive to electrostatic discharges and that is why
opening the unit without special anti-electrostatic equipment may cause its damage.
Service
After installing the device does not require any additional service apart from periodic in-
spection required by applicable regulations. In case of appearance of any defect the user
should ask the producer for help. The producer offers service related to activating, commis-
sioning, guarantee and post guaran
tee service. Manufacturer’s guarantee terms and condi-
tions are described in the guarantee card.
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Summary of Contents for ZL-4A
Page 24: ...Operating Manual 24 Arc fault protection ZŁ 4A 07 2019 Fig 5 ZŁ 4A JC dimensions ...
Page 25: ...Operating Manual Arc fault protection ZŁ 4A 07 2019 25 Fig 6 ZŁ 4A JP dimensions ...
Page 26: ...Operating Manual 26 Arc fault protection ZŁ 4A 07 2019 Fig 7 ZŁ 4A JW dimensions ...
Page 61: ...Operating Manual Arc fault protection ZŁ 4A 07 2019 61 Fig 36 Page 2 STATUS using ...