The ZW32G-12 outdoor circuit breaker is a high-performance power distribution equipment with a rated voltage of 12kV and three-phase AC 50Hz. It is mainly used for various current handling operations in power systems, such as cutting off, closing load currents, overload currents, and short-circuit currents. It is widely applied in substations, industrial and mining power distribution systems, and rural power grids, especially suitable for areas with frequent operations. Moreover, with the addition of a controller, it can achieve distribution network automation, greatly enhancing the operation efficiency and intelligent level of the power system.
II. Environmental Adaptability
Altitude: This circuit breaker can operate stably at altitudes up to 2000 meters, meeting the power demands in different geographical environments.
Temperature Range: The ambient air temperature adaptation range is from -45°C to +70°C, with a daily temperature difference of up to 30°C. It can withstand relatively extreme temperature changes, ensuring reliable performance under various climatic conditions.
Wind Speed: It can resist wind speeds of ≤35m/s, possessing good wind resistance and being suitable for the complex meteorological environment outdoors.
Safe Environment: It is applicable to places without flammable, explosive, chemically corrosive, and severe vibration hazards, guaranteeing the safety and stability of the equipment operation and reducing the failure risks caused by environmental factors.
III. Product Advantages
High Standard Compliance: It strictly adheres to multiple national and industry standards, such as
GB1984 “AC High Voltage Vacuum Circuit Breaker”
GB11022 “General Technical Conditions for High Voltage Switchgear”
GB311.1 “Insulation Coordination for High Voltage Transmission and Transformation Equipment”
DL/TS93 “Common Ordering Technical Conditions for High Voltage Switchgear”
DL/T402 “Ordering Technical Conditions for AC High Voltage Vacuum Circuit Breakers”
GB2706 “Methods of Dynamic and Thermal Stability Tests for Ac High Voltage Apparatus”
GB3309 “Mechanical Tests on High Voltage Switchgear under Common Conditions”
DL403 “Ordering Technical Conditions for 10-35kV Indoor High Voltage Vacuum Circuit Breakers”
IV. Technical Specification
No.
Item
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
20
25
5
Rated Peak 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 Times
Times
30
10
Power Frequency Withstand Voltage (1min): Wet/Dry,
Phase-to-Phase/Phase-to-Ground
KV
30/42/48
11
Lightning Impulse Withstand Voltage (Peak):
Phase-to-Phase/Phase-to-Ground
KV
75/85
12
Secondary Circuit 1min Power Frequency Withstand Voltage
KV
2
V. Product Main Structure Diagram
ZW32G-12 Structure and Installation Dimensions
Technical Requirements
1.Unspecified tolerances are manufactured according to GB/T1804-2000-m level.
2.Unspecified chamfers are 0.545°.
ZW32G-12G Structure and Installation Dimensions
ZW32G-12 Structural Diagram and Installation Dimensions
ZW32G-12G Structural Diagram and Installation Dimensions
