Upgraded 40.5kv 1250A High-Voltage Vacuum Interrupter Circuit Breaker

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: TD-40.5
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: ACB
• Poles Number: 1
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: ISO9001-2000
• Currency: RMB or USD
• Language: Chinese, English, Russian
• Loading Port: It Depends
• Rated Voltage: 40.5kv
• Rated Current: 1250A
• Transport Package: Carton/Pallet
• Specification: As required
• Trademark: HZEC
• Origin: China
• Production Capacity: 50000 Sets/Month

Product Description

Company Profile

Henan Energy Electric Equipment Co., Ltd. was established in 2011 and is an excellent and reliable power equipment manufacturer in China. The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations, high-voltage switches, and medium and low voltage complete sets of equipment. The equipment put into production and operation of the project advocates energy saving, intelligence, informatization, and mechanization. The company has established the Henan Triangle Energy-saving Transformer Engineering Technology Research Center, with 71 utility model patents and 15 invention patents. With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa, and other regions, covering more than 40 countries.

Product Description

Vacuum interrupter, also known as vacuum circuit breaker, is a device used to extinguish the arc in high voltage circuits. In the high voltage circuit, if the fault occurs, the current will produce an arc, which will bring great harm to the equipment, so it is necessary to use the arc extinguishing device, which is installed in the circuit breaker to ensure the safe operation of the equipment.

 

Product Parameters

Note: The movable stem of the VI could only suffering no more than 45Nm twisting force and in order not to demage the metal bellows, the movable stem should be prevented from rotation when assembling. For more requirements please check the Instruction of Usage.

Item	Unit	Type
		TD-40.5/1250-31.5/G	TD-40.5/1250-25/G
Rated frequency	Hz	50
Rated voltage	kV	40.5
Short-time(1 min) power frequency withstand voltage	kV	118
Lightning impulse withstand voltage (peak)	kV	215
Rated current	A	1250	1250
Rated short-circuit breaking current	kA	31.5	25
Rated short-time withstand current	kA	31.5	25
Rated peak withstand current	kA	80	63
Rated short-circuit making current	kA	80	63
Rated single capacitor bank breaking current	A	630
Rated back-to-back capacitor bank breaking current	A	400
Rated duration of short-circuit	s	4
Circuit resistance at min. rated contact force	uΩ	≤14
Contact cloased force due to bellows and atmosphere	N	210±45
Counterforce of contact at full stroke	N	300±50
Mass of moving parts	kg	2.2
Mechanical endurance	Times	10000
Contact limit erosion	mm	3
Switching operation of rated short-circuit breaking current	Times	30
Shelf life	Years	20
Internal gas pressure	Pa	<1.33X10^-3
Rated operating sequence	O-0.3s-CO-180s-CO
Average opening speed (first 12 mm)	m/s	1.6±0.2
Average closing speed (last 6 mm)	m/s	0.8±0.2
Contact bounce duration at closing operation	ms	≤3
Clearance between open contacts	mm	18±1
Out of simultaneity of contact closing and opening	ms	≤2
Rated contact pressure	N	3200^+300	3200^+300
Added external contact forecc at contact touch point	N	2400^+200	2400^+200
Max. rebound during opening	mm	≤3

 

Main Features

1. High arc extinguishing efficiency;
2. High operation reliability;
3. Small shape, light weight;
4. Connect and disconnect fast, high reliability;
5. Long life and low maintenance cost.

 

Outline Diagram Examples

Certifications