ZN85-40.5 Series Indoor High Voltage Vacuum Circuit Breaker

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Description

ZN85-40.5 indoor HV vacuum circuit breaker is a 3-phase AC 50Hz 40.5kV indoor switch equipment.
♦ Installation way: withdrawable type;
♦ Operating mechanism: spring operating mechanism;
♦ Pole type: assembled pole, embedded pole;
♦ Application: switchgear KYN61-40.5.
♦ Secondary plug: 58pins, 64pins.
Environmental Conditions
♦ Ambient temperature: -15r~+40r；
♦ Altitude: <1000m;
♦ Relative humidity: daily average <95%, monthly average <90%；
♦ Earthquake intensity: <8 level;
♦ Places without fire, explosion hazard, serious filthy, chemical corrosion, as well as intense vibration.
Main Technical Parameters

No	Item	Unit	Value
1	Rated voltage	kV	40.5
2	Rated current	A	1250 1600, 2000, 2500
3	Rated short circuit breaking current	kA	25, 31.5
4	Dynamic current (peak)		63, 80
5	4s thermal stability current		25, 31.5
6	Rated short circuit making current (peak)		63, 80
7	Rated short circuit current breaking number	Times	20
8	Rated operating sequence		O-0.3s-CO-180s-CO
9	1 min power frequency withstand voltage	kV	95
10	Rated lightning impulse withstand voltage	kV	185
11	Mechanical life	Times	10000
12	Rated single capacitor bank switching current	A	630
13	Rated back-to-back capacitor bank current	A	400
14	Rated voltage of energy storage motor	V	AC/DC 220/110
15	Power of energy storage motor	W	≤230
16	Energy storage time	s	≤15
17	Ratea voltage of closing/opening coil	V	DC 220/110
18	Rated current of closing/opening coil	A	1.05(110V) 0.96(220V)
19	Clearance between open contacts	mm	20±2
20	Contact travel	mm	7.5±1.5
21	Three phase opening and closing asynchronism	ms	≤2
22	Contact closing bounce time	ms	≤3
23	Main circuit resistance (not include contact arm)	μΩ	≤40