Your current location: HomeProducts & ServicesMV ProductsPermanent magnet

Permanent magnet

Product Features

  • Domestically the most advanced Tysen-SAE permanent magnet operating mechanism (patented technology of "dual contact surface design");
  • TYSEN-SAE intelligent controller domestically with the best level of trust;
  • Equipped with internationally the most advanced Siemens vacuum interrupter or the vacuum interrupter with mechanical life of 40,000 cycles made under supervision of TYSEN-SAE;
  • Its production system successfully passed the acceptance of Siemens, and was awarded the "OE parts" certificate;
  • The earliest product successfully passing the type testing of the Xi'an HV Apparatus Research Institute, and having the longest actual running time at home;
  • Mechanism with mechanical life of 120,000 cycles;
  • Optional OLM-NZ1 intelligent on-line monitoring devices, having achieved intelligence.

Structural Characteristics

  • The ZN139-12/D indoor vacuum circuit breaker is in overall structure of front-and-rear arrangement of the permanent magnet actuator and the interrupter. The main electrical circuit part is in three-phase floor-type structure. Its main circuit is insulated by composite insulation.
  • The permanent magnet actuator of this product is applied with new working principle and structure, of which the greatest advantage lies in its real solution offering to the suction force of the permanent magnet field and the hindrance to separation of brake in the initial stage of opening, thereby fully matching the features requirements of the vacuum interrupter.
  • The ZN139-12/D vacuum circuit breaker can be made into fixed unit upon request of user, also can be equipped with special pushing framework to combine the handcart unit.

Main Specifications and Technical Parameters

Main Specifications and Technical Parameters of Circuit Breaker

No. Description Unit Parameters
1 Rated voltage kV 12
2 Rated power frequency withstand voltage
(1 min)
kV 42/48
3 Rated lightning impulse/fracture withstand voltage (peak) kV 75/85
4 Rated frequency Hz 50
5 Rated current A 630-1250 630-3150 1250~4000*
6 Rated short-circuit breaking kA 20 25 31.5 40
7 Rated short-circuit making current kA 50 63 80 100
8 Rated peak withstand current kA 50 63 80 100
9 Rated thermal stability current
(effective value)
kA 20 25 31.5 40
10 Rated short-circuit duration s 4
11 Rated operations of short-circuit breaking current Number of cycles 30 30 20
12 Mechanical life 30000/40000
13 Rated current breaking cycles (electrical life) 30000/40000
14 Mechanical life of permanent magnet mechanism 120000 120000 100000
15 Rated single/back to back capacitor bank breaking current A 630/400(40kA为800/400)
16 Phase-to-phase spacing mm 210 275
17 Contacts spacing (1) mm 9±1
18 Contact overtravel mm 3±0.5
19 Allowable wearing accumulation thickness of dynamic and static contacts mm 3
20 Time interval between opening of first and last phase of three phase circuit-breaker ms ≤ 2
21 Bouncing time of contactor closed ms ≤ 2 (40kA ≤ 3)
22 Contact pressure N 20kA
23 Average opening speed m/s 0.8-1.2
24 Average closing speed m/s 0.5-0.8
25 Opening time ms ≤50
26 Closing time ms ≤70
27 Rated operating sequence   0.3s 180s
180s 180s

Note: (1) 11±1 when equipped with homemade vacuum interrupter; (2) * 4000A requires forced air cooling. Data shall be prevailed by the final manufactured products.

Main Technical Parameters and Specifications for Permanent Magnet Actuator

No. Description Unit Parameters
1 Rated short-circuit breaking current kA 20 25 31.5 40
2 Closing current A 22 28 48
3 Opening operation current A 1.5 2
4 Rated working voltage for closing and opening v DC220
5 Mechanical life Number of cycles 120000 100000
page top