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Microcomputer Integrated Relay Protection-4U Series

HZD300PX401 series of protection and measurement and control devices can be used for various industrial and mining enterprises and power industries with voltage levels of 20kV and below. By using high-performance 32-bit CPU, the protection, measurement and control, and communication functions are integrated into one, which is suitable for supporting the integrated automatic system of the substation or the electrical automation system of the power plant. The device can be installed in a group of screens, and can also be directly installed on the switch cabinet for decentralized control.
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Product Parameters

Performance characteristics

1. Using the international popular high-speed processor, the main frequency is 120MHz, the built-in resources are rich, the peripheral circuit design is simple, and the manufacturing quality and stability of the product are guaranteed. Sufficient hardware resources, 8M bytes of FlashMemory memory.

2. Measure three-phase current and zero-sequence current (Ia,Ib,Ic,Io), three-phase or line voltage (Uan,Ubn,Ucn,Uab,Ubc,Uca), active power P, reactive power Q, power factor cosφ, frequency f, active power kWh, reactive power kVarh.

3. The measured values of current, voltage, power and electric degree not only reflect the fundamental wave, but also correctly reflect the 2~13 harmonics, and the frequency is 45~60HZ adaptive, so that the measurement results are consistent with the special measuring meter.

4. The export mode of the protection element can be set through the trip matrix to facilitate the user to select the relay to be operated. All relay outlet contacts can be selected as trip contacts (automatic return) or signal contacts (return after reset).

5. With its own operation circuit, it can adapt to 0.3A ~ 5A switch tripping current, and the operation circuit is common to AC and DC.

6. A 100M Ethernet communication interface, a RS485 communication interface, support IEC60870-5-103,Modbus and other protocols.

7. working environment temperature range:-25 ℃ ~ +55 ℃ (liquid crystal without fuzzy, slow phenomenon).

 

 

Technical parameters

Serial Number

Project

Parameters

1

Working temperature

-20 ℃ ~ 55 ℃

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 interface; Ethernet communication interface

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