On wall power supply development and parameters

2021-04-19

With the vigorous development of the power industry, the small power plant field has invested heavily in infrastructure construction, and the demand for small and medium-capacity power supplies is also growing. This is also true for special networks such as railways. At present, Shenzhen Zhengneng Industrial Co., Ltd. has strengthened the competitiveness of the ZNBW series combined power supply in the medium and small-capacity fields in order to meet market demand. The development of a power supply system consisting of wall-mounted rectifiers has been put on the agenda. Zhengneng Industry Co., Ltd. is based on ZN-GKM2.5/220 switching rectifiers, which constitute the ZNBW wall-mounted power supply 7AH, 10AH, 17AH and 24AH systems. The wall-mounted power supply produced by Shenzhen Zhengneng Industry Co., Ltd. (Microcomputer type high-frequency switch wall-mounted DC power system passed the type test of China Electric Power Research Institute of Power Industry Power Equipment and Instrument Quality Inspection and Testing Center in June 2005.
First, the scope of application ZNBW series wall (vertical) power supply is a kind of intelligent power wall-mounting DC power supply system that is launched by Shenzhen Zhengneng Industry Co., Ltd. for use below 30Ah. Applicable to DC power supply for opening, closing, protection and control of small substations, switchboards with switch, intelligent opening and closing, smart box type substations, ring network switchgear and DC operating mechanism. Emergency lighting for small power stations and power distribution rooms. The system is intelligent in management and simple in structure. Installation, operation and maintenance are extremely simple and convenient.
Wall-mounted power system function (for details, please visit http://www.mycompany's website to view) Based on the original basis, you can increase the battery inspection unit, bus insulation unit, flash device and the first developed in China through GPRS, Internet Explorer uploads all system numbers for true remote control.
Second, system technical parameters
1. AC input: 220VAC±15%
2. PT power supply: 100VAC ± 10%
3. Grid frequency: 50Hz±10%
4. AC input overvoltage protection: 265V±5V
5. AC input undervoltage protection: 170V±5V
6. DC rated voltage: 220VDC (110VDC)
7. DC output voltage: 198 ~ 258VDC (99 ~ 143VDC) continuously adjustable
8. Maximum output current of rectifier module: 2.5A (3.5A)
9. Output overvoltage protection of rectifier module: 265V±5V (160 V±5V)
10. Regulation accuracy: ≤±0.5%
11. Current stability: ≤±1%
12. Ripple factor: ≤±0.5%
13. Efficiency: ≥85%
14. Insulation characteristics: output ground, input to ground, input to output plus 2KVAC leakage current is less than 30mA for 1min without insulation breakdown.
15. Working environment temperature: -15～+45°C
Third, system composition and structure
1. AC input unit:
a). Single or dual AC 220VAC input (see Scheme 1); b). 1 AC 220VAC input, 1 PT 100VAC input (see Scheme 2).
2. Intelligent monitoring unit:
Use 4 rows × 8 columns LCD character display;
Standard four-button touch button operation;
Intelligent battery charge management function.
3. High frequency switch module:
2 sets of ZN-GKM2.5/220 (ZN-GKM3.5/110V) type rectifier module, single-phase three-wire AC input, 220VDC/2.5A (110VDC/3.5A) output, and the module can autonomously share current when it is in parallel. Real-time self-test.
4. DC feeder output:
2~4 way closing output, 2 way control output;
5. Pressure reducing device:
One 2.5A/35V step-down module monitors internal automatic control and the step-down accuracy is ±4V.

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