Audited Supplier
ZW32-12/T630-25
High Voltage Circuit Breakers
Electric Type
Normal Type Circuit Breaker
SF6
Fixed
Box Type Sealing Structure
3
Circuit Breaker
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
ISO9001-2000, CE, CCC
Ampower
Export Standard Wooden Case
1300*650*1000
China
Product Description
1. Overview
ZW32 series outdoor column circuit breaker (hereinafter referred to as circuit breaker) is an outdoor power distribution equipment with rated voltage of 12kV, 15kV, 24kV and 50/60Hz three-phase AC. It is mainly used for the load current, overload current and short circuit current in the power system of distribution network. It is suitable for protection and control in the power distribution system of substations and industrial and mining enterprises and suitable for rural power grids and frequently operated places, especially for the needs of urban and rural power grid transformation. This installation instruction manual specifies the main technical parameters, product structure, and operation, installation, use and maintenance of the circuit breaker principles and methods.
2. Environmental conditions for use
1.3.1 The altitude does not exceed 2000m;
1.3.2 The ambient air temperature does not exceed: -40ºC~+40ºC;
1.3.3 The wind speed shall not be greater than 35m/s;
1.3.4 Pollution grade: Grade IV
1.3.5 Installation site: No inflammable, explosive danger, chemical corrosion place.
1.3.6 The intensity of the earthquake shall not exceed 8 degrees
3. Product model
4. Main technical parameters of circuit breaker
5. Mechanical characteristics of circuit breakers
ZW32 series outdoor column circuit breaker (hereinafter referred to as circuit breaker) is an outdoor power distribution equipment with rated voltage of 12kV, 15kV, 24kV and 50/60Hz three-phase AC. It is mainly used for the load current, overload current and short circuit current in the power system of distribution network. It is suitable for protection and control in the power distribution system of substations and industrial and mining enterprises and suitable for rural power grids and frequently operated places, especially for the needs of urban and rural power grid transformation. This installation instruction manual specifies the main technical parameters, product structure, and operation, installation, use and maintenance of the circuit breaker principles and methods.
2. Environmental conditions for use
1.3.1 The altitude does not exceed 2000m;
1.3.2 The ambient air temperature does not exceed: -40ºC~+40ºC;
1.3.3 The wind speed shall not be greater than 35m/s;
1.3.4 Pollution grade: Grade IV
1.3.5 Installation site: No inflammable, explosive danger, chemical corrosion place.
1.3.6 The intensity of the earthquake shall not exceed 8 degrees
3. Product model
4. Main technical parameters of circuit breaker
| S/N | Item | Unit | Value | |||
| 1 | Rated Voltage | kV | 12 | 15 | 24 | |
| 2 | Rated Frequency | Hz | 50/60 | |||
| 3 | Rated Current | A | 630 , 1250 | |||
| 4 | Rated short-circuit breaking current | kA | 20 , 25 | |||
| 5 | Rated peak withstand current (peak) | 50 , 63 | ||||
| 6 | Rated short-circuit withstand current | 20 , 25 | ||||
| 7 | Rated short circuit duration | S | 4 | |||
| 8 | Rated short-circuit closing current (peak) | kA | 50 , 63 | |||
| 9 | Rated operating sequence | 0-0.3s-C0-180s-CO | ||||
| 10 | Mechanical life | Times | 10000/disconnecting switch 2000 | |||
| 11 | Breaking times of rated current | 5000 | ||||
| 12 | Breaking times of rated short-circuit breaking current | 30 | ||||
| 13 | Power frequency withstand voltage in 1min | Wet test/dry test | kV | 42/48 | 50/55 | 65/79 |
| 14 | Lightning impulse withstand voltage (peak) inter-phase, over the ground/fracture | 75/85 | 88/100 | 125/145 | ||
| 15 | Secondary loop l min power frequency voltage (except electronic devices) | V | 2000 | |||
5. Mechanical characteristics of circuit breakers
| S/N | Name | Unit | Parameter | ||
| 1 | Rated Voltage | kV | 12 | 15 | 24 |
| 2 | Clearance between open contacts | mm | 9±0.5 | 11±0.5 | 14±0.5 |
| 3 | Over-travel of contact | mm | 3±0.5 | 3±0.5 | 3±0.5 |
| 4 | Average opening speed | m/s | 1.1±0.2 | 1.2±0.2 | 1.4±0.2 |
| 5 | Average closing speed | m/s | 0.6±0.2 | 0.8±0.2 | 1.0±0.2 |
| 6 | Closing contact bounce time | ms | ≤2 | ||
| 7 | Resistance of each phase loop | μΩ | ≤120 with isolating switch≤200 | ||
| 8 | Closing time | ms | 25~60 | ||
| 9 | Opening time | ms | 18~45 | ||
| 10 | Three-phase heterogeneity | mm | ≤2 | ||
| 11 | Inter-phase center distance | mm | 340 | 340 | 380 |
