ZW32-24 outdoor HV vacuum circuit breaker is a 3-phase AC 50Hz 24kV outdoor switch equipment

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Description

♦ Installation way: pole mounted;
♦ Operating mechanism: spring operating mechanism and permanent magnetic operating mechanism;
♦ Pole type: integrated pole;
♦ Application: outdoor 24kV substation, power plant.
♦ Operation type, manual, electric, remote control.
Product Standards
♦ IEC62271-100 High Voltage Switchgear and Controlgear Part 100: AC Circuit-breakers
♦ GB1984 High Voltage AC Circuit-breakers
♦ GB/T11022 Common Specifications for High-voltage Switchgear and Controlgear
Standards
♦ JB/T 3855 High Voltage AC Vacuum Circuit-breakers
♦ DL/T402 Specification of High-voltage AC Circuit-breakers
Environmental Conditions
♦ Ambient temperature: -35°C 〜+40°C;
♦ Altitude: <2000m;
♦ Wind speed < 35m/s;
♦ Earthquake intensity: <8 level;
♦ Filthy level: IV;
♦ Installation places: No fire, explosion hazard or serious filthy.
Main Technical Parameters

No	Item	Unit	Value
1	Rated voltage	kV	24
2	Rated current	A	630/1250
3	Rated frequency	Hz	50
4	Rated thermal current	kA	20/25
5	Rated short circuit breaking current	kA	20/25
6	Rated dynamic current (peak)	kA	50/63
7	Rated short-circuit closing current (peak)	kA	50/63
8	Thermal stability time	s	4
9	Rated operating sequence	Times	O-0.3S-CO-1 80S-CO
10	1 min power frequency withstand voltage (inter-phase, earth/fracture)	kV	65
	Lightning impulse withstand voltage (peak) (inter-phase, earth/fracture)		125
	Secondary circuit 1min power frequency withstand voltage		2

No	Item	Unit	Value
11	Mechanical life	Times	10000
12	Rated short-circuit breaking current breaking times	Times	30
13	Rated circuit breaking times	Times	10000
14	Contact distance	mm	12±1
15	Over travel	mm	3±1
16	Inter-phase center distance	mm	380±1.5
17	Three phase closing and opening asynchronism	ms	≤2
18	Contact closing bounce duration	ms	≤2
19	Closing time	ms	25 〜80
20	Opening time	ms	23 〜50
21	Average opening speed	m/s	1.1-1.7
22	Average closing speed	m/s	0.5-0.9
23	Main conductive circuit resistance	μΩ	≤80

General Structure Drawing and Installation Size (unit: mm)

1. Upper outgoing line terminal
2. Interrupter
3. Insulating tube
4. Lower outgoing line terminal
5. Conductive clip
6. Flexible connection
7. Insulating lever
8. Contact pressure spring
9. Opening spring
10. Drive
11. Mechanism outgoing shaft
12. Operating mechanism
13. Mechanism box
14. Current transformer link board

1. Operating handle
2. Disconnect main shaft
3. Circuit breaker manual opening/closing handle
4. Energy storage handle
5. Opening/closing indication
6. Wiring plug
7. Current transformer
8. Insulator
9. Insulating frame
10. Insulating lever
11. Incoming line terminal
12. Disconnect blade
13. Outgoing line terminal
14. Circuit breaker

Installation ways (single pole/double pole)

Product Standards
♦ IEC62271-100 High Voltage Switchgear and Controlgear Part 100: AC Circuit-breakers
♦ GB1984 High Voltage AC Circuit-breakers
♦ GB/T11022 Common Specifications for High-voltage Switchgear and Controlgear Standards
♦ JB/T 3855 High Voltage AC Vacuum Circuit-breakers
♦ DL/T402 Specification of High-voltage AC Circuit-breakers

Environmental Conditions
♦ Ambient temperature: -40°C~+40°C;
♦ Altitude: <1000m;
♦ Maximum wind speed is 10km/h, minimum wind speed for the rated level (132/230kv) is 3.2km/h;
♦ Earthquake intensity: <8 level;
♦ Minimum nominal creepage distance: 31mm/kV;
♦ Air pollution degree: Class IV.

Main Technical Parameters

No	Item		Unit	Value
1	Rated voltage		kV	40.5
e	Ratedinsulationlevel	1 min power frequencyDry test (fracture, inter-phase, to earth)Wet test (to earth, external insulation)	kV	95 85
		Lightning impulse withstand voltage(peak)		185
3	Rated current		A	1250, 1600, 2000, 2500
4	Rated short circuit breaking current		kA	20, 25, 31.5

No	Item	Unit	Value
5	Rated short circuit making current (peak)	kA	50, 63, 80
6	Rated peak withstand current	kA	50, 63, 80
7	Rated short time withstand current	kA	20, 25, 31.5
8	Rated operating sequence		O-0.3S-CO-180S-CO
9	Rated short circuit breaking current breaking number	times	20
10	Rated short circuit duration	s	4
11	Breaking time	s	≤0.09
12	Mechanical life	times	10000
13	Newly manufactured vacuum interrupter	Ps	≤1.33×10^-3
13	Vacuum interrupter during 20-year storage time	Ps	<6.6×10^-2
14	Circuit breaker net weight	kg	800
15	Clearance between open contacts	mm	22±2
16	Contact travel	mm	4±1
17	Average opening speed	m/s	1.4-1.7
18	Average closing speed	m/s	0.4-0.7
19	Contact closing bounce time	ms	≤3
20	Inter-phase opening and closing synchronism	ms	≤2
21	Closing time	ms	50≤t≤200
22	Opening time	ms	30≤t≤60
23	Each phase main circuit DC resistance (not includeCT internal resistance)	μΩ	≤100
24	Dynamic and fixed contact cumulative thickness allowed to wear	mm	3
25	Rated contact pressure	N	2500±200