* customer value *
SP-U type microcomputer protection and measurement device is a part of the feeder protection relay series, used to protect the power series and industrial applications in the secondary distribution network is most commonly used ring main unit and compact type switchgear components, is a kind of intelligent protection device, to provide users with a variety of external power supply interface, greatly enhanced the stability of the power supply.
* product features *
This model product is mainly used in the intelligent measurement and protection of 6kV-33kV ring network cabinet..
High reliability: the main components of the device are industrial grade devices, PCB board through the computer copper hole test, the advanced electromagnetic compatibility (EMC) design technology, structure and technology are a priority to ensure that the reliability and anti-interference ability.
High precision, free check: device without any adjustable components, precision adjustment by the software, and with self checking, all digital processing, fundamentally eliminates the zero drift, quantitative change, linear change factors, annual precision drift less than 0.1%. So the accuracy is not required to check regularly
* functional configuration *
Protection function: three section overcurrent protection, fast breaking protection, zero sequence overcurrent protection, zero sequence speed protection, temperature protection
Control function: local control, remote communication
Switch input: 5 way
Switch output: 3 way
Network communication: RS485/232
* technical parameters *
Power supply: 110VAC~220VAC + 20%, 24VDC~48VDC + 20%
Environmental requirements: temperature range: -10 DEG ~-55 DEG relative humidity: 0~98%
Insulation: insulation resistance, dielectric strength, impact voltage: comply with the provisions of DL/T478-20014.10
Mechanical properties: vibration, shock, collision: meet DL/T478-20014.13
Electromagnetic compatibility performance:
Electromagnetic radiation interference test: electromagnetic radiation test can withstand IEC255-22-3 standard.
Fast transient interference test: transient interference test can bear the prescribed standards.
1M burst disturbance tests: can withstand IEC255-22-1 standard pulse interference test.
Electrostatic discharge test: electrostatic discharge test under IEC255-22-2 standard.
Protection accuracy: better than 5%
Network parameters: RS-485/232
