Type-tested metal-clad, air-insulated switchgear to IEC 62271-200. Vacuum circuit breakers with withdrawable trucks, full interlocking, and internal arc classification for operator safety.
Every cubicle has four fully segregated compartments — busbar, circuit breaker, cable, and low-voltage — each earthed independently and pressure-relieved through a top duct. Arc-fault tested to IAC AFLR.
Main incoming feeder with VCB, CTs, VTs, protection relay, metering, and earthing switch.
VCB with overcurrent and earth-fault protection. Cable termination and CT-based metering.
Links two busbar sections via VCB, enabling section parallel operation and maintenance isolation.
Vertical busbar extension between busbar sections. Used for system expansion or dual-level lineups.
Dedicated VT and CT compartment for revenue metering. Test blocks for periodic calibration.
Outgoing cell with VCB sized for transformer magnetizing currents. REF and differential protection ready.
Configured for motor protection (ANSI 49, 46, 37, 48, 66). Vacuum contactor option up to 7.2 kV.
Busbar earthing switch with fault-make capability. Separate compartment for safe access during maintenance.
Kirk-key interlocks between breaker position, earthing switch, and cable compartment door — prevent all unsafe sequences.
Internal arc classification from all four sides for operator protection. Pressure relief ducted to outside.
Schneider Easergy, ABB REF / REM, or Siemens SIPROTEC. IEC 61850 MMS & GOOSE for digital substations.
Maintenance-free vacuum interruption, 10,000 mechanical operations, 30,000 no-load operations typical.
SCADA-ready out of the box. Full substation automation integration supported via Ethernet redundancy (PRP/HSR).
Certificates from KEMA / CESI for dielectric, temperature-rise, short-circuit, and internal arc performance.