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ZW32R-24 Type Auto Recloser

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Product Description


1.General

ZW32R-24 Series Auto Recloser 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:  +45℃ ~ -45℃

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


ZW32R-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


Mainly Technical Parameters

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

Single pole installation diagram1

On-site installation of Circuit Breaker

On-site installation of Circuit Breaker1(1)


Product Inquiry

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ADD:      1906, Haiyun Building, No.70, Tianjian Lane, 
                Shounan Street, Yinzhou District, Ningbo,
                Zhejiang,  China (Mainland) 
PHONE:  +86-13065600656
E-MAIL:   jecsany@163.com   
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