66A5400H01
11
Troubleshooting:
a)
Insulation: Visually inspect the insulators, barriers, spouts, boots,… for dirt, dust, and cracking. If
problems are identified then clean and or replace the components are required.
b)
Corona: Visually inspect the insulators, barriers, spouts, boots,… for signs of corona discharge.
This can normally be identified by holes in the insulation, white powder like substance on the
insulation, burn marks,… If problems are identified then clean and or replace the components are
required. Adjust the design to improve the corona performance by contacting your local Eaton
Salesman and or use switchgear common best practices.
c)
Insulation Integrity: Insulation integrity should be checked on a yearly basis via performing a
standard industry HiPot test via a HiPot test machine.
d)
Control Circuit Wiring: Visually inspect all secondary control voltage wiring. Make sure the
components work correctly and operate smoothly. Replace any worn or defective wiring.
e)
Shutter operating mechanism: Visually inspect the proper operation of the shutter drivers. If
binding is found then remove the foreign elements causing the binding. If parts are found bent or
damaged then replace the damaged parts. If required grease the moving components.
f)
Levering In operating mechanism: Visually inspect the proper operation of the levering in system.
If binding is found then remove the foreign elements causing the binding. If parts are found bent or
damaged then replace the damaged parts. If required grease the moving components.
Quality Test:
In order to perform a quality test of the MiniMod a standard 31” frame VCP-WG breaker should be racked in
and out of the MiniMod. Perform this test five times. After the end of the fifth operation the testing is
complete. The unit can then be mounted into the switchgear.
Check to make sure the breaker can successfully be racked in and out of the MiniMod without any of the
components binding, rubbing, and or breaking. If problems are identified then contact your local Eaton
Salesman or EESS for repair / replacement parts.
Summary of Contents for 4000A MiniMod
Page 4: ...66A5400H01 4 Figure 1 View of the 4000A MiniMod with part descriptions ...
Page 5: ...66A5400H01 5 Figure 2 Outline drawing with reference dimensions ...
Page 6: ...66A5400H01 6 Figure 3 and 4 View of the breaker in the text and connected positions ...
Page 8: ...66A5400H01 8 Figure 7 View inside the MiniMod ...
