This document describes the features and characteristics of the products HB-3L and HB-RJ, including their input and output voltage, current range, timing accuracy, etc.
The HB-3L three‑phase high‑current generator and HB‑RJ thermal relay test instrument are designed for testing thermal relays and high‑current three‑phase circuits. The device uses high‑permeability silicon steel sheets for low heat generation, strong overload capacity, and high efficiency, with individual fine‑adjustment per phase for precise current setting.
The manual describes the measurement principle, panel layout, step‑by‑step operation, fault analysis, packaging contents, and after‑sales warranty. It includes detailed specifications such as 2 KVA power, 0‑600 A current output, and a time‑measurement range up to 999.9 s, as well as troubleshooting tips for common issues like power loss or no output. This manual is written in Chinese.
| Power | 2 KVA |
|---|---|
| Current Output | 0‑600 A (three‑phase), accuracy 1% (0‑200 A) class 0.5 |
| Fine Adjustment per Phase | 0‑2 A |
| Time Measurement Range | 0‑99.99‑999.9 s, selectable |
| Stop‑Signal Input | No distinction between NO/NC contacts, accuracy 0.01 s or 0.1 s |
| Dimensions | 600 mm × 400 mm × 300 mm |
Connect a three‑phase four‑wire power supply, set the leftmost three‑phase regulator knob to the zero position, ensure the zero‑position indicator lights are on, then press the close‑circuit button and listen for the relay click; the close‑circuit indicator should light and the trip indicator should be off.
Connect the relay’s contact to the stopwatch input on the panel, press the test button, adjust the coarse and fine current knobs to the relay’s rated current, then observe the stopwatch stop when the relay trips; the displayed current is the operating current and the elapsed time is the relay’s operating time.
Verify that the fuse is not blown and that the power plug is securely connected.