Secondary circuit testing equipment comes in many varieties, with different functions corresponding to different typical models. Below are some common types of equipment and their representative models:
1. Secondary Circuit Resistance Tester
Used to measure the contact resistance of switch contacts and conductive circuits to ensure current-carrying performance.
Wuhan Youlike: ULK-100A (Supports 100A high current output)
Jiangsu Jiuyi: JY-100A (With printing function, measurement accuracy up to 0.5 class)
Shanghai Shengxu: SMR-100D (Complies with DL/T 845.4 standard)
2. Secondary Voltage Drop and Load Tester
Used to detect the voltage drop and load of PT/CT secondary circuits to ensure accurate measurement.
Zhongshi Gaocheng: ZSYJ-A (Fully automatic measurement, supports three-phase three-wire/four-wire)
APG Instrument: AP2003 (GPS synchronization, wireless testing distance up to 1km)
Wuhan Huading: HDPT series (integrated voltage drop, load, and error calculation functions)
3. Instrument Transformer Comprehensive Tester (CT/PT Analyzer)
Used for testing the volt-ampere characteristics, ratio, polarity, and error of instrument transformers.
Huatu Gaodian: HTFA-H (frequency conversion type, strong anti-interference)
Wuhan Hengwei: HW series (supports online measurement, automatic range switching)
Shanghai Maochuang: MC300B (suitable for PT/CT secondary load testing)
4. Secondary Load Tester
Dedicated for online detection of CT/PT secondary side load.
Wuhan Dingsheng: DGFH-H (with touchscreen, supports DC power supply)
Yangzhou Ketuo: KTHGQF-C (for current transformer load testing)
General Chinese Brand Model: ZC-106A (handheld, easy to operate on-site)
