Microcomputer Relay Protection Tester
Dari Electric recommends
I. Function Introduction
Main test item types: Signal relays, time relays, intermediate relays, reclosing relays, other DC voltage and current relays, current relays, over (under) voltage relays, sequence component relays, synchronization check (or phase comparison) relays, inverse time current relays, differential relays, power (direction) relays, impedance relays, synchronization relays, frequency relays. Line protection: multi-stage overcurrent, over (under) voltage, sequence component voltage and current, frequency devices, power direction protection, reclosing and converting faults, distance and zero sequence, power frequency variation distance, compound voltage blocking (direction) overcurrent, low frequency, low voltage load shedding devices, and other test items.
II. Application Fields
Generator transformer units: differential protection, loss of excitation protection, excitation protection, compound voltage blocking (direction) overcurrent (backup)
Other protections: automatic synchronization devices, standby power supply automatic switching devices, bus differential protection, fiber optic line differential protection
Additionally, the instrument has GPS synchronization test function, enabling remote synchronized testing between two locations. It can test electromagnetic, transistor, integrated circuit, and microcomputer relay protection devices. The optical digital relay protection tester mainly provides a complete testing solution for digital protection, automation devices, and instruments, adapting to digital substations.
| Model selection: |
Currently, the main types of relay protection testers on the market are single-phase, three-phase, four-phase, optical digital, touch screen, and six-phase microcomputer relay protection testers. The main differences between relay protection testers are: three-phase has three voltage and three current outputs, four-phase has four voltage and three current outputs, and six-phase has six voltage and six current outputs. Products are categorized based on voltage levels and user choices.
Guoheng model tips: 6400 is single-phase, 6403 is three-phase microcomputer relay protection tester, 6404 is four-phase, 6406 is six-phase, 6406B is touch screen six-phase, 6406S is optical digital relay protection tester |
Note: The above information and technical parameters are compiled and released by Yangzhou Dari Electric Co., Ltd.
