72.5kv High Voltage Outdoor Reliable Vacuum Interruptor Circuit Breaker Switch Sf6 Disyuntor

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vacuum
• Model NO.: LW36-72.5KV
• Poles Number: 1
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: VDE, ISO9001-2000, CE, CB
• Transport Package: Wooden Package
• Trademark: JUNKE
• Origin: Wenzhou
• Production Capacity: 1000PCS/Month

Product Description

LW36-72.5 self-contained power HV AC sf6 circuit breaker

 

Description:
LW36-72.5 self-energy outdoor HV AC sulfur hexafluoride circuit breaker is an outdoor three-phase porcelain column
electrical equipment mainly used in AC 50Hz, 72.5kV electricity systems in extremely cold regions (for electric stations in
general regions and -40ºC extremely cold regions). This product can be operated frequently and used as a connection circuit breaker.

 

 

Structural features
High performance -strong rated circulating ability: strong short circuit breaking ability at 3150A, -40ºC: 40kA.
Long service life -electrical endurance: 31.5kA×21times (25kA×31times); mechanical life: 6000 times without maintenance and up to 10000 after simple adjustment.
High reliability -sharing the arc extinguishing compartment structure with LW36-126; great product internal insulation
redundancy; over all cast aluminum alloy frame adopted for the spring structure; simple structure and high reliability; suitable for frequent operations.
Reliable breaking performance.
Reliable sealing performance; Annual leakage of SF6 gas ≤0.5%
Meeting the requirements of hard running environments -suitable for Class IV polluted places and -40ºC~+40ºC environments.
Multi-structure forms-usually porcelain column type and handcart type.

 

Order notice

Model and format of the circuit breaker;
Rated electrical parameters (voltage, current, breaking current, etc);
Environmental conditions for using (environment temperature, altitude, and environment pollution level);
Rated control circuit electrical parameters (power-storage electromotor rated voltage and brake separating and closing cable coil rated voltage);
Names and quantities of needed spare items, parts and special equipment and tools (to be otherwise ordered);
The wire connecting direction of the primary upper terminal.

 

Products with special requirements, specifications and dimensions that need to be improved can be designed and manufactured according to user requirements.

Product Paramenters

S/N	Name		Unit	Data
1	Rated voltage		kV	72.5
2	Rated power frequency withstand voltage (1min)	To earth, Between phases	kV	160
		Across open contacts		160+42*
3	Rated lightning impulse withstand voltage	To earth, Between phases	kV	350
		Across open contacts		350+60*
4	Rated frequency		Hz	50
5	Rated current		A	3150
6	Rated short-circuit breaking current Isc		kA	31.5	40
7	Rated short-circuit marking current (peak)		kA	80	100
8	Rated short-time withstand current		kA	31.5	40
9	Rated peak withstand current (peak value)		kA	80	100
10	Rated out-of-phase breaking current		kA	8	10
11	Short - line fault breaking current		kA	90%Isc, 75%Isc	90%Isc, 75%Isc
12	Double earch fault breaking current		kA	27.4	34.8
13	Number of rated short-circuit breaking current		Times	24	20
14	Rated duration of short - circuit		s	4	3
15	First pole to clear factor			1.5	1.5
16	Rated line charging breaking current		A	10	10
17	Rated operating sequence			O-0.3s-CO-180s-CO
18	Rated SF6 gas pressure/Gas refilling alarm pressure/Operation lockout pressure (gauge pressure, 20ºC)		MPa	0.4/0.36±0.015/0.32±0.015
19	Annual leakage of SF6 Gas		%	≤0.5
20	SF6 gas humidity content (mL/L) (20ºC at handover)		mL/L	≤150×10-6
21	Mechanical life		Times	10000
22	Opening time		ms	≤40
23	Closing-Opening time		ms	≥70 (when running)
24	Creepage distance	To earth	mm	≥2585
		Across open contacts		≥2248
25	Weight of SF6 gas filled for one set of CB		kg	8
26	Weight of one set of CB			1300