Zw7 Series Outdoor Hv AC Vacuum Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type and Energy-Storage Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vacuum Circuit Breaker
• Model NO.: ZW7-40.5
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Break Load Current, Over-Load Current
• Certification: ISO9001-2000
• Transport Package: Export Box
• Trademark: DGG
• Origin: China
• HS Code: 8504311000
• Production Capacity: 100000PCS/Year

Product Description

GENERAL
 

ZW7-40.5 series outdoor high-voltage AC vacuum circuit breaker (hereinafter referred to as "circuit breaker") is an outdoor high-voltage distribution switchgear with three-phase AC 50Hz and a rated voltage of 40.5kV, which is mainly used to open and close the load current, overload current and short-circuit current in the power system. The circuit breaker is suitable for the control and protection of substations, industrial and mining enterprises, and urban and rural power grids, especially for places requiring frequent operation and urban power distribution automation networks.

The circuit breaker complies with technical standards such as GB / T19842014 high voltage AC circuit breaker, DL / T402-2016 high voltage AC circuit breaker, and DL / T4032000 technical conditions for ordering 12kV ~ 40.5kV high voltage vacuum circuit breaker.

MODEL DESCRIPTION

USAGE: ENVIRONMENTAL CONDITION

1. Altitude: ≤  1000m, If the altitude is higher than 1000m, the rated insulation level shall be corrected accordingly.
2. Ambient temperature: -40 ^oC ~ +45 ^oC, 
3. Maximum daily temperature difference: 25 K 
4. Humidity: Average daily relative humidity: 95%, average monthly relative humidity: 90%. 
5. Sunshine intensity: not more than 0.1W/cm ² 
6. Wind Speed: 34m/s 
7. Wind pressure: 700Pa
8. Pollution level: e - level
9. Icing thickness: Not more than 10mm 
10. Resistance to floor drain: horizontal acceleration 0.3g, vertical acceleration 0.2g

MAIN ADVANTAGES

☆ Adopt vacuum arc extinguishing, with strong breaking capacity and long mechanical life;
☆ simple structure, long maintenance period
☆Good insulation performance, strong pollution resistance, no fire and explosion hazard;
☆ It can be built-in or external two or three- phase current transformers, with high measurement accuracy;
☆ Built-in intelligent temperature and humidity controller to ensure the normal and reliable operation of the product in cold regions;
☆The overall sealing design of the shell is improved, which can effectively prevent the adverse effects of bad weather such as sand and dust storms.

MAIN TECHNICAL PARAMETERS
 

No.	Item		Unit	Data
1	Rated frequency		Hz	50
2	Rated voltage		kV	40.5
3	Rated current		A	1250 / 1600 / 2000
4	Rated short-time power frequency withstand voltage	Interphase, to earth(dry)	kV/min	95/1
		Fracture (dry)		118/1
		Interphase, to earth(wet)		80/1
		Secondary circuit to earth		2/1
5	Rated lightning impulse withstand voltage	Interphase, to earth	kV	185
		Fracture		215
6	Rated Short-circuit Breaking Current		kA	31.5
7	Rated Short-Circuit Closing Current			80
8	Rated short-time withstand current and duration		kA/s	31.5/4
9	Rated Peak-withstand current		kA	80
10	Rated Short-circuit breaking current breaking times		Times	20
11	Rated operating voltage and Rated Voltage for auxiliary(control) circuit		V	AC/DC220 AC/DC110
12	Main Circuit Resistance		μΩ	≤ 100
12	Mechanical life		Times	10000
Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate.

OUTLINE AND INSTALLATION DIMENSION