Generator Protective Relay Device
(For 10MW or the generators less than 10MW)
BEPR-554U generator protection device is designed specifically for small and medium sized generators, including generator differential protection and generator backup protection.
| Function | BEPR-554U |
| Differential protection | √ |
| Overvoltage protection | √ |
| Loss of excitation protection | √ |
| Comprehensive 3Uo stator ground protection | √ |
| Frequency protection | √ |
| One-point ground protection | √ |
| Rotator two-point ground protection | √ |
| Generator stator ground protection | √ |
| Reverse power protection | √ |
| Non-electric signal protection | √ |
| TA & TV breakage protection | √ |
Product Feature and Benefits
- Main processor of the device is Motorola’s 32-bit microprocessor with fast speed, high reliability, rich resources and big room to expandability;
- The whole panel is a 240×128 big screen LCD which is operated and displayed in Chinese and has friendly human-machine interface;
- Multiple kinds of communication interfaces. Reserved RS-232, RS-485/422, CAN and Ethernet can conveniently conduct high-speed communication with the local station or remote system;
- A/D has high conversion accuracy and fast speed and the device does not need adjustable parts to automatically adjust sampling accuracy;
- The device has well-improved software and hardware watchdog self-test function and automatically blocks the trip in case of failure of CPU;
- The device uses back inserted structure to separate light current from heavy current so as to greatly enhance anti-jamming property of the device;
- The device has overall, rich and simple debug functions.
Technical Specifications:
Operating environment
Working temperature:-20℃～60℃, average temperature within 24 hours does not exceed 35℃.
Storage temperature:-25℃～80℃, not apply excitation at limiting value; irreversible changes will not occur in the device. The device should normally work after temperature is recovered.
Relative humidity: not more than 95% (without dew).
Atmospheric pressure: 80～110kPa (below relative sea-level elevation of 2KM).
Nominal parameters
Rated DC voltage: 220V/110V (indicated in the order), around 10W, fluctuation range: -20%～ +10%.
Rated AC data:
Phase voltage: V
Line voltage: 100V
AC: 5A/1A (indicated in the order)
Rate frequency: 50Hz
Technical parameters of device
- Input circuit: 24V D.C. 2.4mA at each point
- Output contact rating: 30W(τ=5ms), 220V D.C.or 0.5A D.C.
- Trip time: ＜20ms
- Each phase of AC voltage circuit of the device at nominal parameter ≤0.2VA
- Each phase of AC current circuit of the device at nominal parameter≤0.3VA
- Voltage, current and power: 0.5 grade
- Phase angle measurement error ≤1°
- Impedance measurement error ≤5%
Application
10MW or the generators less than 10MW