22kV, 630A, 21kA/3sec, SSV Non-Extensible Indoor Motorized type Ring Main Unit

MCR Type Compact switchgear

Total number of modules 3 pcs


STANDARDS AND MECHANICAL DATA

Metal Enclosed switchgear: IEC 62271-200 General Purpose switches: IEC 60265-1 Disconnectors and Earthing switches: IEC 62271-102 Circuit Breakers: IEC 62271-100 Common clauses: IEC 60694 Pressure of SF6 gas: 1.2 bar at 20 °C Cable bushings: DIN 47636 Temperature class: -25 °C - +40 °C Indoor Degree of protection: - SF6 tank: IP 67 - Front cover: IP 2X - Cable cover: IP 3X - Enclosure IP 54 Colours: - Front cover: RAL 7035 - Side and cable cover: IS 632 DA Grey - Enclosure IS 632 DA Grey


ELECTRICAL DATA – 22 kV - 120kV-1min Nominal voltage: 22 kV Rated frequency: 50 Hz Rated current busbars: 630 A Rated current cable switch disconnector : 630 A Short time withstand current: - cable switch disconnector with interface C (400-bolt) bushing: 20 kArms 3 sec. - vacuum circuit breaker with interface C (400-bolt) bushing: 20 kArms 3 sec. Rated current for transformer T-off : 630 A

Impulse withstand voltage : To earth and between phases: 120 kV Insulation level: - Power frequency 1 min: 60 kV

A01, A02 S: On Load Isolator

C is a cable switch module with a three position load break switch and earthing switch, busbars, interlocking and earthbar.

1 S – module 1 Manometer (only one per RMU Module) 1 Cable bushing, 630A, bolted 1 Motorized Operating mechanism 1 Earth Fault Indication 1 Capacitive voltage indication fixed type VPIS 1 Cable cover standard with Interlocking



A03 V: Vacuum Circuit Breaker

V is a Vacuum circuit breaker module with vacuum circuit breaker, three position isolator/earthing switch, busbars, interlocking, earthbar and stored spring energy mechanism.

1 V – module 1 Cable bushing 400 series bolted, 630A, bolted 1 Motorized Operating mechanism 1 Capacitive voltage indication fixed type VPIS 1 Self-Powered Protection relay CGL make 3 Protection CT _100-50/1_5P10_for CGL relay 3 100/1A, Class 1.0, 2.5VA CT for metering 1 Cable cover standard with Interlocking



Additional equipment delivered separately or mounted in respective panel.

1. Operating handle 2. 22kV Touch Proof Termination Kits 3. Auxiliary supply AC and DC shall be in customers scope for motor / RMU operation