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Large-current resistive load box

A resistive load box and high current technology, applied in the improvement of basic electrical components, etc., can solve problems such as fire, easy-to-burn ceiling, etc., achieve simple and convenient adjustment, solve unreliable contact, and easy to use

Inactive Publication Date: 2016-05-04
中国电子科技集团公司第四十研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The cooling of the existing resistive load boxes generally adopts the form of direct air blowing. The hot air path is from bottom to top. Concentrated on the ceiling, there are hidden dangers such as burning the ceiling or causing a fire after working for a long time

Method used

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Embodiment Construction

[0017] Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings:

[0018] High-current resistive load box, the load voltage is 270VDC, the total current is 1000A, 1A increments, the maximum current is 1000A, its structure is as follows figure 1 — Figure 5 As shown, it includes a box body 1. The side plates around the box body 1 are steel cold plates, and the upper top plate and the lower bottom plate adopt a mesh structure to prevent debris from entering and facilitate air circulation. The bottom of the box body 1 is equipped with moving wheels 3 and ground feet 2, which are convenient for moving and fixing the large-current resistive load box. The front of the box body 1 is provided with an operation panel and two baffles 11a, 11b, the operation panel and the baffles 11a, 11b are fixed on the box body 1 by four screws at the four corners, and the upper end of the box body 1 has an insulating frame , the insulating fra...

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Abstract

A large-current resistive load box comprises a box body. A plurality of insulating frames are fixed to the upper end in the box body. Resistors are fixed to the insulating frames and are of five specifications including 1 A, 2 A, 5 A, 10 A and 20 A. The resistors with the current values of 1 A, 2 A, 2 A, 5 A, 10 A and 20 A are directly formed by corresponding resistor bodies. The resistor with the current value of 40 A is formed by connecting four resistor bodies in series. Thirty resistors are arranged in total, the load resistance value of 1000 A is achieved for the whole load box, each resistor is connected with a gear switch in series, and the gear switches are then connected to a bus in parallel. At least one set of draught fans are arranged at the lower end in the box body. An operation panel is arranged on the front face of the box body. Switch buttons and the gear switches of the draught fans are arranged on the operation panel. A draught fan power supply inlet and an inlet and outlet wiring port are formed in the side face of the box body. Each gear switch is connected into the corresponding resistor in series and then connected into the bus. During use, the load resistance value is controlled to be increased or decreased by controlling on-off of the gear switches, and the aim of rapidly and conveniently regulating output load current is achieved.

Description

technical field [0001] The invention relates to the field of power supply, in particular to a large-current resistive load box. Background technique [0002] Airborne aviation power supply system, in order to reduce the weight of the aircraft itself, especially the weight of military aircraft, more and more 270V DC voltage power supply system is now used instead of the past 28V DC voltage power supply system. In the case of the same power, increasing the voltage (270VDC) can greatly reduce the wire diameter of the current transmission wire, reduce the weight of the wire, especially the weight of the large current transmission wire, and reduce the fuel consumption of the aircraft. The effect is remarkable. The resistive load box is an indispensable test equipment for the development of 270VDC high current control components. [0003] The resistive load box is a resistive load capable of providing a large current. The existing resistive load box is divided into several layers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/20
CPCG01R1/20
Inventor 刘超刘秀梅王小虎
Owner 中国电子科技集团公司第四十研究所
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