High voltage motor longitudinal differential protection circuit
Source: InternetPublisher:sigma Keywords: Protection circuit piezoelectric motor high voltage Updated: 2021/03/16
When the motor capacity is 2000kW and above, longitudinal differential protection should be installed;
important motors with a capacity below 2000kW with 6 lead wires can also be installed if necessary to prevent multi-phase faults inside the motor and lead wires.
The longitudinal differential protection of the motor is usually connected in an incomplete star connection and
consists of two BCH-2 type or two DL-11 type relays (other types of relays are also used). The protection device acts instantaneously to trip the circuit breaker. When composed of DL-11 type relay
, in order to avoid the influence of excitation inrush current when the motor
is started, the outlet relay can be used to trip the circuit breaker with a time limit.
High voltage motor longitudinal differential protection circuit
- Current output characteristics of brushed motor driver chips. How to increase the peak drive current?
- How to build a simple tachometer using an infrared reflectance sensor
- A small improvement on the ordinary refrigerator motor starting circuit
- Replace the GE LOGIQ a200 ultrasound measurement key with a self-made touch switch
- One-way rotation circuit of motor controlled by contactor
- Light-controlled circuit design and analysis
- Magnetic door and window anti-theft alarm
- Large range laser burglar alarm
- Multi-channel laser anti-theft alarm circuit
- High-sensitivity and high-loudness burglar alarm circuit
- Leakage current protection circuit
- Relay fixed time overcurrent protection circuit a
- Low voltage circuit breaker protection circuit c
- Overvoltage and overcurrent protection circuit
- Motor protection circuit
- Structure and working principle diagram of various protection circuitsg
- Short circuit and overvoltage protection circuit for large current regulated power supply
- Regulated power supply overcurrent protection circuit 2
- Three-phase AC power supply phase sequence protection circuit
- Small hydropower station motor speed regulation and overrun protection circuit
京公网安备 11010802033920号