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Microcomputer Integrated Relay Protection-2U Series

The HZD300PX201 intelligent microcomputer protection measurement and control device is mainly a distribution network automation terminal developed for the application of the ring network cabinet system. The device is based on the general design concept and has reasonable function configuration. The device has the measurement and control functions of multi-power, remote signaling, telemetry, remote control, etc., and also has the functions of inverse-time overcurrent protection, zero-sequence overcurrent protection, reclosing, overvoltage, low voltage protection and non-power protection tripping of phase-to-phase current flow interruption, overcurrent, three action characteristic curves. It can be used as the general protection of incoming line, outgoing line and factory transformer.
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Product Parameters

Performance characteristics

The HZD300PX201 intelligent microcomputer protection measurement and control device adopts a microprocessor with high integration and bus not out of the chip to process the signals from the current and voltage transformers, and controls the output of the device through digital logic operation. The device has compact structure, sealed chassis, maintenance-free design, and good anti-interference performance. It is very suitable for the ring network cabinet system with harsh operating environment and limited installation location.

 

 

Technical parameters

Serial Number

Project

Parameters

1

Working temperature

-20 ℃ ~ 60 ℃

2

Storage temperature

-40 ℃ ~ 85 ℃

3

Relative humidity

No more than 95%, no condensation

4

Working power supply

AC/DC110V-220V，DC24V-48V

5

telemetry accuracy

Voltage: less than 0.5%, current: less than 0.5%, zero sequence current: less than 0.02A

6

Protection setting range

Current: 0~99.99A, the error is not more than 3% or 0.05A

7

Zero sequence current: 0 ~ 50A, the error is not more than ± 3% or 0.02A

8

Communication Interface

RS-485 rear terminal bus interface

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