Distribution Box Improvements

For distribution boxes with a distribution transformer capacity of 100 kV·A and above, the installation of temperature control relays (JU-3 or JU-4 ultra-small temperature relays) and shafts should be considered at the side wall of the heat dissipation window in the box The flow fan is installed on the box on the left side above the control electrical board, so that when the temperature in the box reaches a certain value (such as 40 ℃), the exhaust fan can be automatically started to forcibly discharge heat to dissipate the box. A protective circuit is adopted to prevent the occurrence of external circuit failures supplied by the distribution box. Choose a small-sized intelligent phase loss protector, such as DA88CM-II motor phase loss protection module (Shanghai product) can be installed in the distribution box to prevent the motor from being burned due to low voltage phase loss operation.

Improve the wiring method of the low voltage capacitor group of the original distribution box, and change its installation position from the pile head on the AC contactor to connect between the low voltage incoming line of the distribution box and the meter. To prevent inaccurate measurement of the metering device due to phase failure or capacitor damage during operation of the capacitor circuit. In addition, the capacitor selection model should be BSMJ series products to ensure reliable quality and safe operation of components

Post time: Jun-06-2022