Quotations are hereby invited for the service of 11kV switchgear in 3 x mini substations. Objective: - Ensure the reliable operation and safety of the 11kV circuit breaker through comprehensive service, testing, and maintenance. Scope: Description of the switchgear: • 3 x RM6 (Merlin Gerin); • 3 Transformer (11kv/380v 315KVA). Isolate: • 3 x Ring switch/feeder; • 6 x Transformer (11KV/3.3KV). Visual inspection: • Inspect the overall condition of the circuit breaker and associated components; • Check for any signs of physical damage, corrosion, or wear. Electrical testing: • Perform insulation resistance testing on the circuit breaker; • Conduct functional testing of the operating mechanism; • Measure contact resistance and verify that it meets specified limits. Mechanical inspection and maintenance: • Inspect and lubricate moving parts according to manufacturer specifications. Check alignment and adjustment of the circuit breaker mechanism. Ensure that the tripping and closing mechanisms are functioning correctly. Protection system testing: • Verify the settings and operation of protection relays; • Conduct secondary injection testing on relays; • Review communication between the circuit breaker and control systems. Cleaning and paint: • Clean the circuit breakers and transformers, ensuring the removal of dust and debris from all components; • Paint the CB cabinet and transformers; • Inspect and clean auxiliary contacts and terminals. (ЮАР - Тендер #64220714)

SANPC/01/05/2025 New

Quotations are hereby invited for the service of 11kV switchgear in 3 x mini substations. Objective: - Ensure the reliable operation and safety of the 11kV circuit breaker through comprehensive service, testing, and maintenance. Scope: Description of the switchgear: • 3 x RM6 (Merlin Gerin); • 3 Transformer (11kv/380v 315KVA). Isolate: • 3 x Ring switch/feeder; • 6 x Transformer (11KV/3.3KV). Visual inspection: • Inspect the overall condition of the circuit breaker and associated components; • Check for any signs of physical damage, corrosion, or wear. Electrical testing: • Perform insulation resistance testing on the circuit breaker; • Conduct functional testing of the operating mechanism; • Measure contact resistance and verify that it meets specified limits. Mechanical inspection and maintenance: • Inspect and lubricate moving parts according to manufacturer specifications. Check alignment and adjustment of the circuit breaker mechanism. Ensure that the tripping and closing mechanisms are functioning correctly. Protection system testing: • Verify the settings and operation of protection relays; • Conduct secondary injection testing on relays; • Review communication between the circuit breaker and control systems. Cleaning and paint: • Clean the circuit breakers and transformers, ensuring the removal of dust and debris from all components; • Paint the CB cabinet and transformers; • Inspect and clean auxiliary contacts and terminals.

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2025-06-02 16H00

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