1. SF6 relay should have the following functions1) Monitor the SF6 gas pressure inside the circuit breaker;2) Distinguish whether the cause of the decrease in gas pressure is the decrease in ambient t...
1. Calibration principle of SF6 relayIn a closed container, the SF6 gas pressure at a certain temperature can represent the density of SF6 gas. And the SF6 gas pressure at 20°C is often used as the d...
1. The composition of SF6 relaySF6 relay is an important protection and control component in the power system. The failure of the circuit breaker will cause great economic losses. To ensure the reliab...
1. Different types of mechanical pressure gaugesMechanical pressure gauges for commercial or residential use often have lighter and smaller open front shells and tend to be cheaper. Industrial equipme...
1. Use of diaphragm pressure gaugeIn the process of assembling the diaphragm pressure gauge, first the spring tube is vacuumed with professional equipment, then a certain amount of liquid is filled, a...
Ⅰ. Why should SF6 density relay be calibrated?In the Power Equipment Handover and Preventive Test Regulations, the density relay is required to be calibrated after handover, overhaul and every 3 year...
SF6 density relays are SF6 gas density relays. Each SF6 switch user unit should calibrate the SF6 density relay regularly. From the actual operating situation, it is also very necessary to periodicall...