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Station AC cabinet
The station AC system provides a reliable, stable and convenient AC power supply for the work of the field secondary equipment, and provides a reliable guarantee for meeting the requirements of the work power supply of the field secondary equipment and ensuring the safety of the person and the equipment。

概述

Ac power supply panel is our company according to the Ministry of Energy "power plant, substation engineering and relay protection test instrument configuration quota", issued by the Ministry of Electric power Industry "power system relay protection and safety automatic device anti-accident measures" and other relevant provisions of the product design and manufacturing。It provides a reliable, stable and convenient AC power supply for the work of the field secondary equipment, and provides a reliable guarantee for meeting the requirements of the work power supply of the field secondary equipment and ensuring the safety of the person and the equipment。


用途

The equipment is suitable for power plants, substations and large and medium-sized industrial enterprises, and can be used as a general AC distribution power panel for secondary equipment。


特点

1.Adopts dual power supply。

2. The control of AC power supply adopts high-score small circuit breaker, which has the advantages of fast action, high sensitivity, reliable action, short circuit, overload automatic tripping function。

3.There are many feeders。

4. With short circuit, overload tripping alarm indicator function。


Product structure 

1.Screen structure, surface coating, electrical clearance and creepage distance, anti-static measures, electrical performance, wire laying, temperature rise, heat resistance, mechanical properties and other requirements, all meet the requirements of DL/T720-2013。Special ground copper bar is installed in the screen。

2.Adopts the completely closed cabinet structure, the front and back doors are locked, and the screen body is composed of plates。

3.Internal main components: dual power switching device, automatic air switch, voltmeter, indicator light and other components。

4.The instrument, indicator light and control switch are installed on the front panel, and the input and output wires can be connected through the terminal block at the back of the screen。


Electrical performance of equipment

1.Insulation resistance: under standard test atmospheric conditions, the insulation resistance between each circuit and the enclosure of the device is not less than 10MΩ;The insulation resistance between each independent circuit is not less than 10MΩ。

2.Medium strength: Under standard test atmospheric conditions, the above circuits and the independent circuits can withstand AC 50Hz, voltage 2kV (effective value), lasting 1min test, without insulation breakdown or flashover phenomenon。

3.Impulse voltage: Under the standard test atmospheric conditions, each AC circuit and DC circuit should be able to withstand the standard lightning wave short-term impact test of 5kV (peak)。

4.Ac circuit using automatic switch, mechanical life on and off more than 20,000 times, instantaneous break current up to (4 ~ 7) Ie。


Working principle  

1. The power input adopts three-phase four-wire 220V/380V dual AC power supply。

2.High break circuit breakers are set at the busbar and feeder output, which can facilitate the maintenance of each circuit。

3.Voltmeter directly monitors the three-phase output voltage and reflects the power supply condition。


Main technical index

1.Rated input voltage: three-phase four-wire 220V/380V, frequency 50Hz;

2.Rated output voltage: 220V/380V, three-phase four-wire;220V, single phase;

3.The rated current can reach 3200A.


Conditions of use

1.The use site should be protected against rain and snow。

2.The altitude does not exceed 2000 meters。

3.Ambient air temperature: -5℃ ~ +40℃。

4.The humidity of the air does not exceed 50% at 40 ° C, and the relative humidity is allowed to be higher at lower temperatures, and does not exceed 90% at 20 ° C。

5.The amplitude of mechanical vibration is not greater than 0.05mm, frequency is not more than 600 times/min。

6.The difference between the installation inclination and the plumb line shall not be greater than 5°。

7.The surrounding medium has no explosion risk, no conductive dust and corrosive gas


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