■ Product Overview

Microcomputer protection is the development direction of power system relay protection, which has high reliability, high selectivity, and high sensitivity. The hardware of the microcomputer protection device includes a microprocessor (microcontroller) as the core, matched with input and output channels, human-machine interface, and communication interface. This system is widely used in power, petrochemicals, mining and smelting, railways, and civil buildings.

■ Product features

1. High reliability;

2. High flexibility;

3. Good protection performance;

4. Easy to obtain expansion functions;

5. Easy maintenance and debugging;

6. Beneficial for achieving comprehensive automation technology;

■ Product Features

Fixed time/inverse time protection, rear acceleration protection, overload protection, negative sequence current protection, zero sequence current protection, single-phase grounding line selection protection, overvoltage protection, low voltage protection, loss of voltage protection, negative sequence voltage protection, air cooling control protection, zero sequence voltage protection, low cycle load shedding protection, low voltage disconnection protection, reclosing protection, backup automatic switching protection, overheating protection, overcurrent protection, reverse power protection, differential protection, long starting time protection, non electric quantity protection, etc.