PRS-7910
PRS-7910 47
Carefully examine the protection panel, protection equipment inside and other parts inside to see
that no physical damage has occurred since installation.
The rated information of other auxiliary protections should be checked to ensure it is correct for the
particular installation.
• Panel wiring
Check the conducting wire which is used in the panel to assure that their cross section meeting the
requirement.
Carefully examine the wiring to see that they are no connection failure exists.
• Label
Check all the isolator binary inputs, terminal blocks, indicators, switches and push buttons to make
sure that their labels meet the requirements of this project.
• Equipment plug-in modules
Check each plug-in module of the equipment on the panel to make sure that they are well installed
into the equipment without any screw loosened.
• Earthing cable
Check whether the earthing cable from the panel terminal block is safely screwed to the panel
steel sheet.
• Switch, keypad, isolator binary inputs and push button
Check whether all the switches, equipment keypad, isolator binary inputs and push buttons work
normally and smoothly.
10.4.1.2 Insulation Test (if required)
Insulation resistance tests are only necessary during commissioning if it is required for them to be
done and they have not been performed during installation.
Isolate all wiring from the earth and test the isolation with an electronic or brushless insulation
tester at a DC voltage not exceeding 500V, The circuits need to be tested should include:
• Voltage transformer circuits
• Current transformer circuits
• DC power supply
• Optic-isolated binary inputs
• Binary output contacts
• Electrical communication ports
The insulation resistance should be greater than 100MQ at 500V.
Test method:
To Next Page
Loading...
Need help?
General