Brand: ABB
Category: Power Supplies
Document Type: Installation Guide
Language: EN
Installation Guide for UniGear ZS1
Uploaded: April 20, 2026, 7:45 p.m.
Warranty Information
Warranty details are not explicitly stated but spare parts are available upon request.
Operation Summary
The UniGear ZS1 is a medium voltage switchgear designed for indoor applications. It is a three-phase, metal-enclosed, air-insulated system available with withdrawable apparatus or switch-disconnectors. The panels are factory-assembled and type-tested. The system is designed for three-phase operation and is typically fitted with a single busbar system. Key operations include switching operations, testing procedures, and the use of service trucks for maintenance. The manual covers installation, operation, and maintenance, emphasizing safety throughout.
Key Operational Aspects:
- Switching Operations: Procedures for operating the switchgear.
- Test Procedure: Guidelines for performing tests on the equipment.
- Service Trucks: Information on specialized vehicles for maintenance.
- Interlocks: Safety mechanisms to prevent incorrect operations.
- Withdrawable Parts: Procedures for inserting and removing components like circuit-breakers and contactors.
Troubleshooting and error codes
| Problem | Possible Cause | Solution |
|---|---|---|
| Withdrawable part cannot be moved from test/disconnected to service position. | Circuit-breaker is not open. | Open the circuit-breaker. |
| Earthing switch is not open. | Open the earthing switch. | |
| Crank not turned sufficiently. | Turn crank clockwise until fully engaged. | |
| Withdrawable part cannot be moved from service to test/disconnected position. | Circuit-breaker is not open. | Open the circuit-breaker. |
| Crank not turned sufficiently. | Turn crank anti-clockwise until fully engaged. | |
| Circuit-breaker cannot be closed. | Withdrawable part is between test/disconnected and service position. | Move the withdrawable part fully to test/disconnected or service position. |
| Control wiring plug is not inserted. | Insert the control wiring plug. | |
| Circuit-breaker cannot be opened. | Control voltage has failed. | Check control voltage supply. |