QMT-P MV-Switchgear

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MV-Switchgear

Application:	indoor, power distribution (protection, disconnection, measurement, …)
Rated frequency:	50 – 60 Hz
Protection class:	IP 30 – IP 54, IP 20 with open door
Ambient temperature:	-5 °C to +40 °C
Rated humidity:	90% at 20 °C
Arc lightning test:	annex “C” IEC EN 62271-200
Certificates:	IEC EN 62271-200, IEC EN 61439-1, IEC EN 61439-2, IEC EN 60529, CEI 0-16

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Rated Voltage	7,2 kV	12 kV	17,5 kV	24 kV	36 kV
Rated withstand voltage (1 min)	20 kV	28 kV	38 kV	50 kV	70 kV
Rated impulse withstand voltage	60 kV	75 kV	95 kV	125 kV	170 kV
Rated current	400 – 1250 A	400 – 1250 A	400 – 1250 A	400 – 1250 A	400 – 800 A
Short time withstand current (1 s)	12,5 – 25 kA	12,5 – 25 kA	12,5 – 25 kA	12,5 – 25 kA	16 – 25 kA
Internal arc withstand	12,5 – 16 kA	12,5 – 16 kA	12,5 – 16 kA	12,5 – 16 kA	16 kA
Arc lightning test	LSC2A-PI-IAC	LSC2A-PI-IAC	LSC2A-PI-IAC	LSC2A-PI-IAC	LSC2A-PI-IAC

The MV switchgear has a structure composed by one ore more compartments for specific functions, as determined by the needs and system configuration

main busbar compartment
=> in the upper part of the control cabinet, separated from other units
breakers and circuit breakers compartment
=> contains the air-, vacuum- or SF6-gas-insulated circuit-breaker
=> controls located on the front of the panels
cable compartment
=> in the lower part of the switchgear, protected by an interlocked door
auxiliary circuit compartment
=> located above the switch-disconnector compartment
=> measuring instruments, protection relays, fuses, low voltage switches

Depending on the version with/without arc fault protection, air or SF6 insulated, size and types of withdrawable units