Schneider Contactor LC1E95M7N

03/13/2021

Working principle of servo drive

At present, most servo drivers use digital signal processor (DSP) as the control core, which can achieve more complex control algorithm, digitalization, networking and intellectualization. The drive circuit based on intelligent power module (IPM) is widely used in power devices.

09/05/2020

What is the difference between permanent magnet frequency conversion and ordinary frequency conversion

In the current air compressor market, energy saving has become the mainstream word in the industry. Energy-saving air compressors are emerging one after another, and the air compressor frequency conversion control technology is becoming more and more mature.

06/25/2020

Guangzhou Hitachi compressor naming rules for vehicle air conditioning

Guangzhou Hitachi compressor naming rules for vehicle air conditioning Example: G503DHV-80DTYG

07/07/2020

Overnight, refrigerant leaked light, guess where is the problem

Overnight, refrigerant leaked light, guess where is the problem After receiving notification from VIP customers, they went to a concrete mixing plant in the suburbs to repair an air conditioner.

08/17/2020

What is the reason for the excessive leakage of the refrigeration compressor

1. Insufficient oil flow, increase the oil supply appropriately; 　　2, the assembly sequence of the refrigeration compressor stuffing box is unreasonable and should be assembled according to the procedure;

08/17/2020

Methods and Skills of Stable Operation of Water Chiller

When using the chiller, if the equipment often fails, it will threaten the normal operation of the equipment. As the main equipment to reduce the temperature of the space, the chiller needs to master the correct use method of the chiller before use.

06/29/2020

Compression ratio of American Copeland compressor

07/17/2020

Cause Analysis and Treatment Method of Copper Tube Leakage of Evaporator of Single Cooling Unit

Cause Analysis and Treatment Method of Copper Tube Leakage of Evaporator of Single Cooling Unit A central air-conditioning system in a public area uses a screw chiller. During operation, a copper tube in the evaporator leaks due to a malfunction. After further inspection by the technical staff, it was confirmed that the fault was leakage of the copper pipe of the evaporator of the chiller.

06/14/2020

Double Flow Integrally Geared Compressor (DF-IGC)

DF-IGC have Large flow with Compact body Innovative Double Flow Arrangement

09/06/2020

Characteristics and Control of Exhaust Noise of Air Distribution Valve in Pneumatic System

In a pneumatic system, the air intake and exhaust of the cylinder are controlled by an air distribution valve, and the noise generated by the air discharged into the atmosphere through the exhaust port of the distribution valve is often greater than the noise generated by any part of the pneumatic system. And cause serious damage and pollution to the operators and the surrounding environment [2].