Brand: GE
Category: Other
Document Type: Manual
Language: EN
Manual for 24kV-27kV Air Insulation Switchgear
Uploaded: Nov. 21, 2025, 8:55 p.m.
Summary
This publication contains the information required for installation, commissioning, operation and maintenance of SecoGear. SecoGear is three-phase, metal enclosed, air-insulated factory assembled switchgear. SecoGear is type-tested and suitable for indoor applications up to 27 kV. The panel is designed with withdrawable modules and is fitted with a single busbar system. The withdrawable parts are equipped with circuit breakers, voltage transformers, fuses or current transformers.
Details of the technical design and configuration of individual switchgear, such as the technical data, detailed part lists for the individual panels and comprehensive circuit documentation etc., can be found in the relevant order documents.
For correct usage of the switchgear, please read this manual carefully. It is always advisable to use the manual for all operations regarding installation, commissioning, operation and maintenance of SecoGear air-insulated switchgear.
These instructions are also used as references for personnel to carry on regularly maintenance of the switchgear.
Troubleshooting and error codes
| Malfunction | Reason | Resolution |
|---|---|---|
| The circuit breaker can not be racked into service position from test position |
1. The handles on the withdrawable frame is not in position. 2. The circuit breaker is closed 3. The earthing switch is closed 4. The circuit breaker is electrically interlocked (electromagnetic YO locked) 5. Shutter is not completely open |
1. Adjust the frame and handles 2. Open the circuit breaker 3. Open the earthing switch 4. Unlock/Check electromagnetic YO 5. Check shutter drive mechanism |
| The circuit breaker can not be racked out to test position from service position |
1. The circuit breaker is closed 2. The circuit breaker is electrically interlocked (electromagnetic YO locked) |
1. Open the circuit breaker 2. Unlock/Check electromagnetic YO |
| Can not lower the shutter on the earthing switch operating hole |
1. The circuit breaker is not in test / disconnected position 2. The earth switch is electrically interlocked |
1. Rack the circuit breaker out to test position or disconnected position 2. Unlock / Check electromagnet |
| Operating hole shutter can not rise back after the earthing switch is opened | Drive shaft of earthing switch has not reached intended position | Turn the crank anticlockwise to the limit where the mechanical OPEN indication stays exactly below the operating hole |
| The cable compartment door can not be closed / opened | The earthing switch is not completely opened | Open the earthing switch |
| The circuit breaker can not be closed |
1. No auxiliary power supply 2. The control plug is not inserted 3. The circuit breaker is not engaged in test / service position 4. The closing spring has not been charged 5. The electrical interlocking in position 6. Closing release not working |
1. Turn on auxiliary power supply 2. Insert and lock control plug 3. Fully engage the circuit breaker to test /service position 4. Charge the closing spring 5. Check power supply for interlocking 6. Check power supply for closing release |
| The circuit breaker can not be opened |
1. No auxiliary power supply 2. Opening release not working |
1. Turn on auxiliary power supply 2. Check power supply for opening release |