High Voltage Switchgear

ZW32-12/630-20 12kV Intelligent Pole-Mounted Circuit Breaker

Product Overview

The ZW32-12/630-20 is a pole-mounted vacuum circuit breaker for outdoor 12 kV distribution. Its solid-insulated poles integrate current and voltage sensors and power-taking components. The source specification table lists the ZW32-12/T630-20 and ZW32-12/T630-20G variants.

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Product Features

Technical specifications No. Item Unit ZW32-12/T630-20 ZW32-12/T630-20G 1 Arc extinguishing chamber type – Vacuum Vacuum 2 Insulating medium – Solid insulation Solid insulation 3 Rated voltage kV 12 12 4 Rated frequency Hz 50 50 5 Rated current A 630 630 6 Rated short-time withstand current kA 20 20 7 Rated short-circuit breaking current kA 20 20 8 Rated peak withstand current kA 50 50 9 Rated short-circuit duration s 4 4 10 Rated short-circuit breaking current breaking times Times ≥30 ≥30 11 Rated operating sequence (ratings should not be reduced for rated operating cycles) – O-0.3s-CO-180s-CO O-0.3s-CO-180s-CO 12 Rated lightning impulse withstand voltage Phase-to-phase and phase-to-ground kV 75 75 (1.2/50μs, peak value) Break kV 85 85 13 Rated power frequency short-time withstand voltage (1min) Phase-to-phase and phase-to-ground kV 42 42 Break kV 48 48 14 Partial discharge of the whole machine (including current and voltage sensors and power supply module) Test voltage kV 14.4 14.4 Partial discharge pC ≤20 ≤20 15 Main circuit resistance μΩ ≤80 ≤130 16 Mechanical stability Times ≥10000 ≥10000 17 Actuating mechanism type – Spring Spring 18 Operation mode – Electric operation with manual opening/closing capabilities Electric operation with manual opening/closing capabilities 19 Operating voltage V DC24 DC24 20 Switch closing time ms ≤60 ≤60 21 Switch opening time ms ≤40 ≤40 22 Opening and closing asynchronism ms ≤2 ≤2 23 Current sensor encapsulated in the pole Rated current ratio Phase sequence 600A/1V 600A/1V Zero sequence 20A/0.2V 20A/0.2V Accuracy level Phase sequence Measurement Class 0.5s, Protection Class 5P10 Measurement Class 0.5s, Protection Class 5P10 Zero sequence Class 1, Protection Class 10P10 Class 1, Protection Class 10P10 Temperature range ℃ -40℃～70℃ -40℃～70℃ Implementation method – Low-power electromagnetic type Low-power electromagnetic type 24 Voltage sensor encapsulated in the pole Rated voltage ratio Phase sequence （10kV/√3）/（3.25V/√3）（10kV/√3）/（3.25V/√3） Zero sequence （10kV/√3）/（6.5V/3）（10kV/√3）/（6.5V/3） Accuracy level Phase sequence Class 0.5 Class 0.5 Zero sequence Class 1 Class 1 Temperature range ℃ -40℃～70℃ -40℃～70℃ Implementation method – Capacitive voltage division Capacitive voltage division Sampling method – Dual-side voltage acquisition (both source and load sides) Dual-side voltage acquisition (both source and load sides) 25 Capacitive Power-taking Power Supply Encapsulated in the Pole Power supply method – Built-in capacitive power supply Built-in capacitive power supply Installation method – Integrated capacitive power supply cast into the insulation pole Integrated capacitive power supply cast into the insulation pole Single-phase rated output power W ≥10±10% ≥10±10% 26 Remote and local lockout function – Optional ≥10±10% 27 Recloser enable/disable function – Optional ≥10±10% 28 Manual closing lockout – N/A N/A 29 Switch enclosure protection level – ≤IP67 ≤IP67 30 Switch service life Year 20 20 Note: The above data is subject to change due to technical improvement.

Product Details & Applications

ZW32-12/630-20 12kV Intelligent Pole-Mounted Circuit Breaker product detail and application view 1

Technical Specifications

No.	Item		Unit	ZW32-12/T630-20	ZW32-12/T630-20G
1	Arc extinguishing chamber type		-	Vacuum	Vacuum
2	Insulating medium		-	Solid insulation	Solid insulation
3	Rated voltage		kV	12	12
4	Rated frequency		Hz	50	50
5	Rated current		A	630	630
6	Rated short-time withstand current		kA	20	20
7	Rated short-circuit breaking current		kA	20	20
8	Rated peak withstand current		kA	50	50
9	Rated short-circuit duration		s	4	4
10	Rated short-circuit breaking current breaking times		Times	≥30	≥30
11	Rated operating sequence (ratings should not be reduced for rated operating cycles)		-	O-0.3s-CO-180s-CO	O-0.3s-CO-180s-CO
12	Rated lightning impulse withstand voltage	Phase-to-phase and phase-to-ground	kV	75	75
12	(1.2/50μs, peak value)	Break	kV	85	85
13	Rated power frequency short-time withstand voltage (1min)	Phase-to-phase and phase-to-ground	kV	42	42
13	Rated power frequency short-time withstand voltage (1min)	Break	kV	48	48
14	Partial discharge of the whole machine (including current and voltage sensors and power supply module)	Test voltage	kV	14.4	14.4
14	Partial discharge of the whole machine (including current and voltage sensors and power supply module)	Partial discharge	pC	≤20	≤20
15	Main circuit resistance		μΩ	≤80	≤130
16	Mechanical stability		Times	≥10000	≥10000
17	Actuating mechanism type		-	Spring	Spring
18	Operation mode		-	Electric operation with manual opening/closing capabilities	Electric operation with manual opening/closing capabilities
19	Operating voltage		V	DC24	DC24
20	Switch closing time		ms	≤60	≤60
21	Switch opening time		ms	≤40	≤40
22	Opening and closing asynchronism		ms	≤2	≤2
23	Current sensor encapsulated in the pole	Rated current ratio	Phase sequence	600A/1V	600A/1V
23	Current sensor encapsulated in the pole	Rated current ratio	Zero sequence	20A/0.2V	20A/0.2V
23	Current sensor encapsulated in the pole	Accuracy level	Phase sequence	Measurement Class 0.5s, Protection Class 5P10	Measurement Class 0.5s, Protection Class 5P10
23	Current sensor encapsulated in the pole	Accuracy level	Zero sequence	Class 1, Protection Class 10P10	Class 1, Protection Class 10P10
23	Current sensor encapsulated in the pole	Temperature range	℃	-40℃～70℃	-40℃～70℃
23	Current sensor encapsulated in the pole	Implementation method	-	Low-power electromagnetic type	Low-power electromagnetic type
24	Voltage sensor encapsulated in the pole	Rated voltage ratio	Phase sequence	（10kV/√3）/（3.25V/√3）	（10kV/√3）/（3.25V/√3）
24	Voltage sensor encapsulated in the pole	Rated voltage ratio	Zero sequence	（10kV/√3）/（6.5V/3）	（10kV/√3）/（6.5V/3）
24	Voltage sensor encapsulated in the pole	Accuracy level	Phase sequence	Class 0.5	Class 0.5
24	Voltage sensor encapsulated in the pole	Accuracy level	Zero sequence	Class 1	Class 1
24	Voltage sensor encapsulated in the pole	Temperature range	℃	-40℃～70℃	-40℃～70℃
24	Voltage sensor encapsulated in the pole	Implementation method	-	Capacitive voltage division	Capacitive voltage division
24	Voltage sensor encapsulated in the pole	Sampling method	-	Dual-side voltage acquisition (both source and load sides)	Dual-side voltage acquisition (both source and load sides)
25	Capacitive Power-taking Power Supply Encapsulated in the Pole	Power supply method	-	Built-in capacitive power supply	Built-in capacitive power supply
25	Capacitive Power-taking Power Supply Encapsulated in the Pole	Installation method	-	Integrated capacitive power supply cast into the insulation pole	Integrated capacitive power supply cast into the insulation pole
25	Capacitive Power-taking Power Supply Encapsulated in the Pole	Single-phase rated output power	W	≥10±10%	≥10±10%
26	Remote and local lockout function		-	Optional	≥10±10%
27	Recloser enable/disable function		-	Optional	≥10±10%
28	Manual closing lockout		-	N/A	N/A
29	Switch enclosure protection level		-	≤IP67	≤IP67
30	Switch service life		Year	20	20