Zw7-40.5 Series Vacuum Circuit Breaker Outdoor Type with CT Inside

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: ZW7
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vcb
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
• Certification: ISO9001-2000, CCC
• Transport Package: Wooden Package
• Specification: ZW7-40.5 35kv
• Trademark: CNHK
• Origin: China
• Production Capacity: 1000

Product Description

ZW7-40.5 (40.5kV)  Vacuum Circuit Breaker, Outdoor Type,
1.General
1.1Ratings: Rated voltage up to 40.5kV, Rated current up to 2000A, AC50HZ 
1.2 Application: for making and breaking load current, overload current and short-circuit protection of electric systems and equipments.
 1.3 Standard: IEC62271-100
2. Type and Interpretation:
Z  :  Vacuum circuit breaker
W  : Outdoor
7  -  :Design code
40.5: Breaking voltage(kV)
3. Working Condition
3.1 Ambient air temperature: -25ºC~ +40ºC
3.2 Altitude: ≤2000m
3.3 Pollution level. ≤III
3.4 Wind speed: 34m/s (Equal to 700 over cylindrical surface)
3.5 The external shocking and earthquake could be neglected.
3.6 The influence of sunshine radiation when 1000w/m should be taken into consideration.
3.7The amplitude of electromagnetic interference in the secondary system
Note: Customized products for other special working conditions are available on your requirements.
4. Main Technical Parameter

Item			Unit	Data
Rated voltage			kV	40.5
Rated insulation level	1min power frequency with stand voltage	Dry test	kV	95
		Wet test	kV	80
	Rated lightning impulse withstand voltage		kV	185
Rated frequency			Hz	50
Rated current			A	1250	1600	2000
Rated short-circuit breaking current			kA	20	25	31.5
Rated short-circuit making current(peak)				50	63	80
Rated short-time withstand current			kA	20	25	31.5
Rated peak withstand current				50	63	80
Rated duration of short-circuit			s	4	4	4
Rated operation sequence				O-0.3s-CO-180S-CO*
Mechanical life(grade M2)			times	10000
Electrical life				E2 class
Overall breaking time			s
Rated breaking current of cables charging			A	50
Rated breaking times of short-circuit breaking current			times	20
Peak value of TRV			kV	114
Rated operating voltage and auxiliary circuit voltage			V	DC220,110,24 AC220,110,24
Weight			kg	800

5. Overall and Installation Dimension