ZW32Y-12 Series Outdoor AC High Voltage Prepaid Vacuum Circuit Breaker

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ZW32Y-12 Series Outdoor AC High Voltage Prepaid Vacuum Circuit Breaker

Our ZW32Y-12 outdoor prepaid vacuum circuit breakers integrate high-voltage switching and metering functions into a single unit, providing comprehensive load control, prepaid metering, and anti-tampering protection for 12kV distribution systems.

• Rated at 12kV with current options of 630A and 1250A; short-circuit breaking up to 20kA with making current up to 50kA.

• Integrated voltage transformer, current transformer, and intelligent metering controller deliver load control, prepaid function, overload protection, and short-circuit instantaneous protection.

• GPRS network load control terminal enables real-time meter reading, remote power disconnection/connection, and line loss analysis.

• Mechanical life of 10,000 operations with 50 rated short-circuit breaking operations for exceptional reliability.

• Wide temperature range from -45°C to +40°C with pollution Class III capability.

• Fast delivery, reliable quality, responsive service, and extensive project experience backed by our company.

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Product Overview

The ZW32Y-12 outdoor AC high voltage prepaid vacuum circuit breaker is designed for prepaid high-voltage metering applications in three-phase AC 50 Hz power systems with a rated voltage of 12 kV. Comprising a ZW32-12 outdoor vacuum circuit breaker, voltage transformer, current transformer, and intelligent metering controller, it integrates the functions of a high-voltage switchgear and a high-voltage metering device. It provides capabilities such as load control, high-voltage metering, prepaid function, overload current protection, inrush current delay protection, short-circuit instantaneous protection, and anti-tampering protection. By incorporating a GPRS network load control terminal, it enables real-time and scheduled meter reading, remote power disconnection/connection, and line loss analysis.

The ZW32Y-12 outdoor high voltage prepaid vacuum circuit breaker complies with national standards such as GB1984-2003, GB/17215-2002, and GB17201-2007.

Technical Specifications

S.Q.	Name		Unit	Data
1	Rated Voltage		kV	12
2	Rated Frequency		Hz	50
3	Rated Current		A	630/1250
4	Rated Short-Circuit Breaking Current		kA	16	20
5	Rated Short-Time Withstand Current			16	20
6	Rated Peak Withstand Current (Peak)			40	50
7	Rated Short-Time Duration		S	4
8	Rated Short-Circuit Making Current (Peak)			50
9	1 min Power Frequency Withstand Voltage	Phase-to-Phase, Phase-to-Ground	kV	42
10		Across Isolating Gap		48
11	Lightning Impulse Withstand Voltage	Phase-to-Phase, Phase-to-Ground		75
12		Across Isolating Gap		85
13	Rated Operating Sequence		times	O-0.3S-CO-180SCO
14	Rated Number of Current Breaking Operations			10000
15	Rated Number of Short-Circuit Breaking Operations			50
16	Mechanical Life			10000
17	Power Frequency Withstand Voltage for Secondary Circuits (1 min, excluding electronic components)		V	2000

Model and Designation

Z W 32Y -12 / □ - □

Z: Vacuum Circuit Breaker

W: Outdoor Type

32Y: Design Symbol (Prepaid)

12: Rated Voltage (kV)

□: Rated Current (A)

□: Rated Short-Circuit Breaking Current (kA)

Normal Service Conditions

1. Altitude: Not exceeding 2000 meters.

2. Ambient Air Temperature: -45℃ to +40℃.

3. Relative Humidity: Daily average not exceeding 95%; Monthly average not exceeding 90%.

4. Wind Speed: Not exceeding 35 m/s.

5. Installation Site: Free from fire, explosion hazards, chemical corrosion, and severe vibration.

6. Pollution Degree: Class III.

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