ZW20-12(F) Intelligent outdoor vacuum circuit breaker

Description:

• Classification Series ：Outdoor Vacuum Circuit Breaker • Product Name ：ZW20-12(F) Intelligent outdoor vacuum circuit breaker • Product Overview： ZW20-12F outdoor column high voltage vacuum circuit breaker, used for outdoor high volt. Distribution Switchgear, rated voltage 12kV, three-phase AC 50 HZ. Mainly used for opening...

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Detailed Description

ZW20-12F outdoor column high voltage vacuum Circuit Breaker, used for outdoor high volt. Distribution Switchgear, rated voltage 12kV, three-phase AC 50 HZ. Mainly used for opening, closing the power system load current, overload current and short circuit current. The main configuration consists of vacuum breaker, CH-40 controller, external voltage transformer (Note: distribution automation line ring network available in bilateral PT) three parts.

This product are widely used in 10kV, 13kV city, rural power grid space ring network for disconnecting switch, contact switch, automatic switch device which can implement the ring deployment line load.

It uses vacuum arcing SF6, N2 mixed gas as dielectric, to introduce the Toshiba VSP5 gas seal, explosion, insulation structure technology, the overall excellent sealing performance. Inside is filled with SF6, N2 mixed gas which does not leak, not affected by the external environment. The spOutline & Mounting Dimensionsring operating Mechanism with miniaturization and performance optimization design, action reliability is much higher than the traditional spring mechanism

Product Feature

1.Ideal apparatus in urban and rural electricity network reform:Remote function:remote control,remote metering,remote communication and remote adjustment.

2.Flexible operating:Both power storage and CO operation are motor and manualoperated,remote and local operation are both available.

3.Excellent breaking capability:Break short-circuit current 25kA up to 30 times.

4.Small operation power and high dependability:The small motor-driving springoperation mechanism with new design is of lowest operation power (about 30W).

5.Multiple installations:Pole mounted and pad mounted.

6.Reliable sealing:The mature sealing technology assures reliable sealingperformance

7.Particular incoming and outgoing method:Silicon rubber bushing to make enoughinsulate distance.

8.Safe operation:Anti-explosive device mounted on the top of box preventsheated gas and maters from spattering out when inner fault occurs.

Ambient condition

1.Ambient Temperature:-40℃~+40℃

2.Altitude:≤2000m

3.Wind Pressure:no more than 700Pa(equal to 34m/s wind speed

4.Maximum Temperature Drop:no more than 25℃

5.There will be have dew under the condition of high temperaturelow down hastily.

Model description

Technical Data

1	Rated voltage	kV	12
2	Frequency	HZ	50
3	Rated current	A	63,010,001,250
4	Rated short-circuit breaking current	kA	20, 25
5	Rated withstand current(peak)	kA	50, 63
6	Rated short-time withstand current(4s)	kA	20, 25
7	Rated short-circuit making current(peak)	kA	50, 63
8	Mechanical life	Times	10000
9	Rated short-circuit breaking time	Times	30
10	1min P.F withstand voltage-dry(phase to	kV	42/48
10	phase, to earth; across open contacts)	kV	42/48
11	Lightning impulse withstand voltage peak	kV	75/85
11	(phase to phase, to earth; across open contacts)	kV	75/85
12	P.F withstand voltage for secondary loop	kV	2
13	Net weight	KG	140
13	Net weight	KG	(170 with Isolator)
14	SF6 rated gas pressure	Mpa	0

Mechanical Properties Data

1	Contact opening distance	mm	9 ±0.5
2	Contact over-travel	mm	3 ±0.5
3	Average opening speed	m/s	1.1±0.2
4	Average closing speed	m/s	0.6±0.2
5	Contact closing bounce time	ms	≤2
6	Three phase simultaneity	ms	≤5
7	External charged air insulation distance	mm	240±2
8	External creepage ratio	cm/kV	3.8
9	Conductive loop resistance per phase	μΩ	≤150
9	Conductive loop resistance per phase	μΩ	(≤200 with isolator)
10	Polar distance	mm	135±1.5
11	Closing time	ms	≤45
12	Opening time	ms	≤45
13	Isolating gap opening distance	mm	≥190
14	Manual opening and closing operation torque	N.m	≤150
15	Rated power of energy storage motor	W	≤40
16	Rated voltage of energy storage motor	V	AC220
17	Rated closing operating voltage	V	AC220
18	Max./Min. closing operating voltage	V	AC264/143
19	Rated opening operating voltage	V	AC220
20	Max./Min. opening operating voltage	V	AC264/143
21	Max./Min. motor voltage	V	AC242/187

Outline & Mounting Dimensions