Zw43-24 Type Outdoor Vacuum Circuit Breakers

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: ZW43-24
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vacuum
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: ISO9001-2000, IEC
• Transport Package: Wooden Carton
• Specification: ZW43-24 Auto Recloser
• Trademark: JECSANY
• Origin: China
• HS Code: 8535210000
• Production Capacity: 10000PCS/Years

Product Description

Product Description
1.General
ZW43-24 Series outdoor high voltage vacuum circuit breaker is rated voltage 24kV, three phase AC 50Hz outdoor distribution equipment. Mainly used for breaking, closing power system load current, overload current and short-circuit current. Applicable to substations and power distribution in industrial and mining enterprises for protection and control purposes, and frequent operation place for rural power grids.

The circuit breaker has the features of small size, light weight, anti-condensation, maintenance and so on. Adapt to bad weather conditions and dirty environments.

The vacuum interrupter of the circuit breaker adopts solid sealing technology, and the external insulation adopts silicone rubber sleeve; it has long life and high reliability; the operating mechanism can adopt a miniaturized, high-reliability spring mechanism, or an advanced permanent magnet mechanism. It can also be equipped with isolating switches and intelligent controllers, and can also be used as a sectioner or recloser to realize four remote control functions and power distribution automation.

2. Service environment conditions
a) Ambient Air Temperature:  +45ºC ~ -45ºC
b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level (Maximum installation altitude): not more than 2500 meters.
d) Ambient air should be not apparently polluted by corrosive and flammable gas, vapor etc.
e) The wind speed is not greater than 35m/s.
f ) Anti-contamination level for grade IV
g) The earthquake intensity does not exceed 8 degrees.

Mainly Technical Parameters

No.	Item	Unit	Parameters
0	Type		ZW43-24
1	Rated voltage	kV	24
2	Rated frequency	Hz	50/60
3	Rated current	A	630/1250
4	Rated short-circuit breaking current	kA	20/25
5	Rated peak value withstand current(peak)	kA	50/63
6	Rated short time withstand current	kA	20/25
7	Rated short-circuit closing current (peak)	kA	50/63
8	Mechanical life	Times	10000
9	Rated short-circuit breaking current breaking number	Times	30
10	Power frequency withstand voltages (1 min), wet/dry: inter-phase, earth, fracture	kV	65/79
11	Lightning impulse withstand voltage (peak) inter-phase ,earth, fracture	kV	125/145
12	Rated operate sequence		O-0.3-CO-180S-CO
13	Secondary circuit 1min power frequency voltages	kV	2

Offering:
With optional classes for rated current range:
For 15kV, with Breaking capacity 630A 20kA,800A 20kA and 1250A 20kA.
For 27kV, with Breaking capacity 630A 20kA,800A 16kA and 1250A 25kA.
For 38kV, with Breaking capacity 800A 12.5kA and 1250A 20kA.


With optional classes for installation styles:
Single phase, vacuum recloser.
Three phase, vacuum recloser.

With optional relay protection curves for user choice:
Detail Functions:
+with Instantaneous over current protection, definite time over current protection and over current protection, over current,three-stage current protection, low voltage component block, composite voltage component block or direction component block is available for each section;
+with zero sequence over current protection, E/F, SEF, with directional model for selection;
+with Manual closed accelerating protection, the breaker will trip fast when it's closed in fault, and it will trip and lockout,close operation;
+with 0 to 4 shots reclosing, "O-T1-CO-T2-CO-T3-CO-T4-CO-Lockout" , reclosing shots setting, time delay setting, each section OC protection sequence coordination;
+with two fast+ two delay curve coordination setting for phase OC protection and EF/SEF protection, 5 model IEC standard curves+ 5 model ANSI/IEEEC curves;
+with cold load protection;
+with hot-line-tag protection;
+with two stage negative sequence over current protection;
+with frequency protection and frequency slip protection;
+with over-voltage protection ;
+with under-voltage protection ;(optional)
+with residual voltage protection ;
+with frequency protection ;
+with relay for additional transformer protection high temperature input; (optional/definable)
+with relay for additional transformer protection heavy gas input ; (optional/definable)
+Event record, Real-time sync, Real time checking,
+Optional functions:
Optional channel for voltage sensor, Remote operating, Double-PT, protection for CT circuit, intelligent phone control/blue booth, GPRS communication, Mobile-phone message/GSM, SCADA system.

Single pole installation diagram

On-site installation of Circuit Breaker



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