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Main transformer measurement and control device

HZD300PB501 series of integrated measurement and control devices can be used for various industrial and mining enterprises and power industries with 110kV and below voltage levels. 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, or directly installed on a device for decentralized control.
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Product Parameters

Performance characteristics

The device has compact structure, sealed chassis, maintenance-free design, good anti-interference performance, and is suitable for poor operating environment.

 

 

Technical parameters

1. It adopts the internationally popular high-speed processor, the main frequency is 200MHz, 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 two groups of three-phase currents (Ia,Ib,Ic), three-phase or line voltages (Uan,Ubn,Ucn,Uab,Ubc,Uca,3U0), active power P, reactive power Q, power factor cosφ, frequency F, active power kWh, and 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. Up to 84-way open-in interface.

5. 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.

6. All relay outlet contacts can be selected as trip contacts (automatic return) or signal contacts (return after reset).

7.GPS timing can be based on network timing, and B code timing (RS485 interface) is also supported.

8. The differential protection has a criterion to prevent the misoperation of the differential protection caused by TA saturation when the equipment is started or the fault outside the zone.

9. Effective and reliable TV disconnection criterion, effectively prevent the motor low voltage components malfunction.

10. Two 100M Ethernet communication interfaces, one RS485 communication interface, support IEC60870-5-103,Modbus and other protocols. There are 16 fault recording waves, and the sampling point recording wave contains 14 analog quantities at most (the interval is 1mS), and the recording wave adopts the standard Comtrade format. The static power consumption of the whole machine is low (about 10W), the LCD module adopts new technology, and the service life is greatly improved.

11. High anti-interference performance, through 10 electromagnetic compatibility testing certification, fast transient, electrostatic discharge, surge anti-interference performance has reached the highest level (level IV) standards.

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

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