◆ Overview

ZW20-12 / T1000 (630) -25 outdoor high voltage AC vacuum circuit breaker (hereinafter referred to as circuit breaker) for the rated voltage 12kV, three-phase AC 50Hz outdoor power distribution equipment. It uses vacuum interrupter and SF6 gas as the insulating medium, ZW20-12 type column vacuum circuit breaker improved products. The use of the introduction of Japan's Toshiba VSP5 gas seal, explosion-proof, insulation structure technology, the inlet and outlet ducts have also improved the sealing performance, the overall sealing performance, the internal filling SF6 gas does not leak, not the external environment, The spring operating mechanism has been miniaturized for design and reliability and stability optimization. With the direct chain and active multi-stage tripping system, the reliability and stability of the operation are several times higher than that of the conventional spring operating mechanism: the main shaft And the contact between the use of the internal use of the outside of the table chain structure, the main circuit of the contact resistance is small, low temperature. Therefore, ZW20A-12-type outdoor column vacuum circuit breaker is a maintenance-free products, is the column on the circuit breaker to share.

ZW20A-12 than ZW20-12 also increased the over-current protection, the agency spring energy storage instructions, and equipped with air socket for the second electrical connection, easy and intelligent controller combination. Excellent electrical and mechanical properties, so ZW20A-12 outdoor column vacuum circuit breaker has been widely used. Mainly used for open section, close the 10kV power system load current and short circuit current, suitable for substation and industrial and mining enterprises in the distribution system for the protection and control purposes, more suitable for frequent operation of the grid occasions. This product and controller supporting, with excellent recloser function, to meet the power distribution automation system requirements.

This product is mainly in line with the following standards: GB1984 high voltage AC circuit breaker GB / T11022 high voltage switchgear and control equipment standard common technical requirements.

◆ Model and meaning

◆ conditions of use

1. Altitude: no more than 2000m;

2. Ambient air temperature: -40 ° C to + 40 ° C, day temperature difference: day temperature change is not greater than 25 ° C;

3. Wind speed: not more than 35m / s;

4. No flammable, explosive hazard, strong chemical corrosion (such as various acids, alkalis or smoke, etc.) and places of intense vibration.