Xuji WCB-822 transformer CPU2.75 Xuji WDR-821 capacitor protection CPU2.75
WCB-820 series microcomputer factory transformer protection device is mainly suitable for the protection of plant transformer, used transformer or grounding transformer in 3~10kV voltage grade low current grounding system or small resistance grounding system.
1.1. Functional configuration: please refer to Table 1-1
Xuji WCB-822 transformer CPU2.75 Xuji WDR-821 capacitor protection CPU2.75
Xuji WCB-822 transformer CPU2.75 Xuji WDR-821 capacitor protection CPU2.75
1.1. Main Characteristics
A. The reinforced unit chassis is designed according to resist strong vibration and strong interference, especially suitable for harsh environment, and can be separately installed on the switch cabinet.
All b. The integrated circuits adopt industrial or military products, making the device has high stability and reliability.
c. Adopt 32-bit DSP as protection CPU with large capacity RAM and Flash Memory; strong data operation, logic processing and information storage capability, high reliability and fast running speed.
The d. 16-bit A / D was used as data acquisition at 24 points per week with high protection measurement accuracy.
Using e. graphic LCD, all Chinese display menu type human-computer interaction; real-time display of various running status and data, detailed and intuitive information, convenient operation and debugging.
The f. 8 sets of protection values can be fixed independently, and the fixed value area switching is safe and convenient.
g. Large capacity information record: can save no less than 100 recent historical reports, with action parameters, power loss and maintenance, convenient for accident analysis.
The h. adopts DL / T667-1999 regulation with RS-485 communication interface; the network is economical and convenient and can directly communicate with microcomputer monitoring or protection management machine.
Xuji WCB-822 transformer CPU2.75 Xuji WDR-821 capacitor protection CPU2.75
2. Technical indicators
2.1. Rated data
A. Rated DC voltage: 220V or 110V (indicated in order)
b. Rated AC data: phase voltage 100 / V
Zero-order voltage, 100V
AC current 5A or 1A (Order)
Zero-order current on the high-voltage side is 1A
Zero-order current on the low-voltage side is 5A
Rated Frequency, 50Hz
c. heat endurance:
AC voltage circuit: 1.2Un
Three-phase current and low-voltage side zero-order current circuit: long-term operation of 2In,
1s 40In
Zero-order current circuit: long-term operation 2A
1s 40A
Xuji WCB-822 transformer CPU2.75 Xuji WDR-821 capacitor protection CPU2.75
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