Special test load box for UPSs (uninterruptable power supplies)

A technology for testing load boxes and power supplies, which is applied in the field of special test load boxes for UPS power supplies, and can solve the problems of unable to meet the power factor test range, no capacitance protection measures, and unable to meet non-linear test loads, etc.

Inactive Publication Date: 2016-08-17
HUNAN FUDE ELECTRICAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. At present, many UPS power supply test equipment in the industry have a power factor of 1, which cannot meet the power factor test range of 0.6-1.
[0005] 2. Part of the UPS power supply test is an AC test load, which cannot meet the RCD (resistance-capacitance-transistor) type non-linear test load specified by the national standard
[0006] 3. Some RCD loads are only controlled by a simple combination of resistors and capacitors, without corresponding capacitor protection measures, resulting in a very low service life of the UPS test load

Method used

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  • Special test load box for UPSs (uninterruptable power supplies)
  • Special test load box for UPSs (uninterruptable power supplies)

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] Such as figure 1 and figure 2 As shown, a test load box dedicated to UPS power supply, which includes three rectifier bridges connected to the R phase, S phase, and T phase of the three-phase power supply, each rectifier bridge is connected to a power load part, and the power load part includes a resistor A load part and a capacitive load part, the resistive load part is composed of a plurality of load resistors connected in series with the rectifier bridge, each load resistor is connected in parallel, and the capacitive load part is composed of a load capacitor and a protection resistor in series, Each load resistor is connected in parallel with a capacitive load part; the power load part is connected to the PLC controller of the lower computer through the contactor matrix, and the PLC controller of the lower computer is connected to the forced air cooling ...

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Abstract

The invention relates to the technical field of load test, in particular to a special test load box for UPSs (uninterruptable power supplies). The special test load box comprises three bridge rectifiers connected with R, S and T phases of a three-phase power supply respectively, wherein each bridge rectifier is connected with a power load part; each power load part comprises a resistive load part and a capacitive load part and is connected with lower computer PLC (programmable logic controller) through a contactor matrix, and the lower computer PLC is connected with a forced air cooling fan through a contactor. The special test load box for the UPSs further comprises an electrical parameter test module which is connected with the R, S and T phases of the three-phase power supply, and the electrical parameter test module and the lower computer PLC are connected with an upper computer test terminal through an RS485 communication interface. The special test load box can provide test for three UPSs independently simultaneously and can also provide test for three-phase UPSs, and provides a critical test link for ex-factory inspection.

Description

technical field [0001] The invention relates to the technical field of load testing, in particular to a special testing load box for UPS power supplies. Background technique [0002] As the test performance requirements of UPS power supply gradually increase, the requirements for UPS power supply test equipment also increase accordingly. However, the load test equipment for UPS power supply test is mixed, and many load boxes for UPS power supply test use pure resistance. . [0003] Yet the problem or shortcoming that prior art exists are as follows: [0004] 1. At present, many UPS power supply test equipment in the industry have a power factor of 1, which cannot meet the power factor test range of 0.6-1. [0005] 2. Part of the UPS power supply test is an AC test load, which cannot meet the RCD (resistance-capacitance-transistor) type non-linear test load stipulated in the national standard. [0006] 3. Some RCD loads are only controlled by a simple combination of resist...

Claims

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Application Information

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IPC IPC(8): G01R31/40
CPCG01R31/40
Inventor 蒋修洋黎志盈李稳根周华俊洪志腾
Owner HUNAN FUDE ELECTRICAL
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