Ground Conductor Discharge; Ground Conductor Current - Fronius Symo 3.0-3-S Serviceanleitung

Ground Conduc- -
tor Discharge
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Take safety precautions.
Observe the safety rules – DC voltage present!
Set DC disconnector of the inverter to level 0 and insert the inverter in the wall bra-
cket.
Installing the inverter means that voltage is now also present at the inverter
1 Measuring instrument
2 Inverter
9 Measuring line
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*) These requirements comply with DIN VDE 0701-0702 and ÖVE/ÖNORM E8701‑1.
Also refer to the applicable requirements and standards in your country.
Ground conduc- Preparation
tor current -
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116
Measurement should only be carried out once the insulation resistance test has
been passed.
Mount the inverter lid again.
Only successful measurement between the lid and wall bracket guarantees that the
ground conductor function of the inverter is working.
Ensure the device to be checked has been securely disconnected from the AC grid
(grid power line [L and N] must not be connected). If the AC grid cannot be discon-
nected from the wall bracket, the appropriate safety precautions must be taken.
Re-insert the inverter in the wall bracket.
CAUTION!
WARNING!
The resistance must not exceed 0.3 W *)
Measurement should only be carried out once the ground conductor resistance test
has been carried out successfully
Direct process: The device must be insulated from ground. There must be no addi-
tional connections to the ground potential (e.g. data leads, assembly)
Remove conductive objects from the housing
Mount missing housing parts.
(A)
Example: Measurement of the ground conductor
resistance
(A) – release on power stage set cover
- If necessary, the wall bracket must be lightly scrat-
ched in order to penetrate the Eloxal or powder layer