I. Overview

1. Purpose

The  HZ5376 High Current Generator (hereinafter referred to as the current booster) is a testing equipment independently developed by our company. It integrates the advantages of similar products at home and abroad, employing numerical control technology with strong anti-interference capabilities. Compared with the previous generation of current boosters, it utilizes a low-power, high-capacity variable autotransformer and a current transformer made of high-permeability iron core, resulting in advantages such as large output power, small size, and light weight. It is mainly used for the calibration of thermal relays, motor protectors, contactors, circuit breakers, air switches, switchgear cabinets, protective screens, and for testing projects such as the ratio of primary busbar protection and various current transformers. It is widely used in scientific research, production, and electrical testing sites in power, railway, petrochemical, metallurgical, and mining enterprises.

Main Functions

◆ Can instantaneously output a current of 0～6000A.

◆ The timer stops timing when the current is disconnected.

◆ Can synchronously test the action time of equipment.

◆ Automatically identifies normally open and normally closed contacts.

◆ Can connect multiple calibration devices in series simultaneously to improve work efficiency.

2. Performance Characteristics

◆ Adopts an aesthetically pleasing PVC panel.

◆ Directly displays the test values of primary and secondary currents, facilitating experimental observation and recording.

◆ High measurement accuracy, Class 0.5.

◆ High power, small size, and strong load-carrying capacity.

◆ Small size and light weight, with a volume that is only 30%～70% of similar products, making it very convenient to carry.

4. Operational Aspects

(1) After completing the wiring, check it again to ensure there are no wiring errors and that the connectors are in good contact.

(2) During the testing process, if abnormal phenomena such as arcing or no display upon startup occur, immediately turn off the power and recheck the wiring.

(3) In actual wiring, the current output terminals should form a loop; otherwise, the instrument will not output current.

(4) This current booster comes with random output leads; the external copper output leads should be selected according to 10A/mm². (The standard configuration includes two 1-meter test leads.)

(5) The equipment's capacity temperature rise (30 minutes - 24 hours) is configured according to the long-term working temperature rise.

II. Technical Characteristics

1. Name and Classification

(1) Name: HZ5376 High Current Generator.

(2) Environmental Group: Belongs to Group III instruments as specified in GB6587.1-86 "General Outline for Environmental Tests of Electronic Measuring Instruments" (i.e., suitable for outdoor use).

(3) Input: AC 50Hz, 380V.

(4) Output: Single-phase AC high current ranging from 0 to 6000A; the current can be smoothly, steadily, and continuously adjusted with an accuracy higher than Class 0.5. The output current is a standard sine wave with minimal burrs, surpassing the requirements of power system standards, and the ripple factor is less than 0.3%.

(5) Output Current Mode: True RMS continuously adjustable.

(6) Output Waveform: Standard sine wave.

(7) Output Open-Circuit Voltage: 5V.

(8) Current Accuracy: Each current level can be smoothly, steadily, and continuously adjusted with an accuracy higher than Class 0.5. The current and voltage meters display true RMS values with high precision and stability.

(9) Current Stability: 0.2%.

(10) Current Waveform Distortion: THD 1%.

(11) Protection Settings: Overcurrent and overvoltage protection.

(12) Capability to measure the current action time of the tested component and synchronously record and lock the action time. Automatic discrimination of normally open and normally closed contacts.

(13) Timing Range: 0.001S to 99999.999S, with an accuracy of 0.001S.

(14) Power: 30KVA.

(15) Structural Form: Split-type.