1. Low-voltage line protection
2. High accuracy
3. Short distance Line protection
YD-800 series distributed microcomputer monitoring protection device is a new generation power integrated automation system device, which is developed by Chongqing Yueda Electric Equipment Co., Ltd. based on latest 32-bit DSP and mature protection control technology. It can be used in substation, power plant, switch substation and railway distribution automation system with voltage 110kV, 35kV and below level. The protective monitoring device has functions of tele-control, tele-metering, tele-signaling and tele-adjusting; besides, the system optimizes the hardware configuration, software design, user interface, substation information-sharing and communication interface.
The YD-800 series distributed microcomputer monitoring protection device has been widely used in the power plant and substation of power system, metallurgy, petrochemical plant and large and medium-sized industrial and mining enterprises. With
Technical feature
1. Protection and control integration
2. Modularization design
3. Large communication capacity and support various communication protocol:
with RS485/RS422/RS232/CAN communication interfaces, and supporting 103, MODBUS and other various communication protocols.
Main technical data
Rated data
1. DC power supply: 220V or 110V
2. AC voltage: 57.7V, 100V
3. AC current: 5A, 1A
4. Frequency: 50Hz
Power consumption
1. DC circuit: ≤10W
2. AC voltage circuit: < 0.5VA/phase
3. AC current circuit: <1VA/phase (In=5A) or <0.5VA/phase(In=1A)
Exact work range
1. Current:0.05In~20In(In=5A, 10A)
2. Voltage: 0.4V~180V
3. Frequency: 45Hz~55Hz
4. Df/dt: 0.5Hz/s~10Hz/s
4. Time:0~99.9S
Rated valve error
1. Current and voltage: <±3% rated value
2. Frequency rapid-short protection: <0.01Hz
3. Percentage differential protection: <±1% rated time+35ms
Protection rated time
1. Over-current protection: rapid-break time < 30ms at double time
2. Differential rapid protection: motion time < 20ms at 1.5 rated value
3. Percentage differential protection <30ms in a state of at double rated value;
Impulse voltage
Each input and output terminal to earth, AC circuit and DC circuit and AC current and AC voltage can bear 5kV (peak value) standard lighting impulse test;
Overload ability
1. AC current circuit: double times rated current allowing continuous work
10 times rated current allowing 10s
40 times rated current allowing 1s
2. AC voltage circuit: 1.1 times rated voltage allowing continuous work
3. DC power supply circuit: 80%~110% rated voltage allowing continuous work
Relay electric-shock capacity
Work environment
1. Normal work temperature: -20°C~+50°C
2. Extreme work temperature: -40°C~+70°C
3. Relative humility: ≤95% 25°C
4. Atmosphere pressure: 80~110Kpa (relative height above sea below 2000m)
Anti-jamming performance
1. Capable of bearing 1MHz and 200KHz shockwave impulse test
2. Capable of bearing IEC225~22-4 standard IV level (4kV±10%) fast transient disturbance test ;
Mechanical performance
Capable of bearing server I-level vibration response and shock response
Tele-metering class
1. Voltage, current, frequency: 0.2 class
2. Others: 0.5 class
3. Tele-signaling resolution: <2ms
4. Signal input way: electrical independent contact