Zd2C Contact Resistance Tester
The ZD2C Contact Resistance Tester measures the resistance of circuit breaker contacts, switchgear contacts and bus-bar joints. It calculates resistance according to Ohm’s law (R=U/I), providing
ZD2C Contact Resistance Tester
The ZD2C Contact Resistance Tester measures the resistance of circuit breaker contacts, switchgear contacts and bus-bar joints. It calculates resistance according to Ohm’s law (R=U/I), providing current, test time and resistance readings during testing. This makes the instrument suitable for contact-resistance checks where a clear measurement record is useful for inspection and maintenance work.
Contact Resistance Testing
Electrical contacts and conductive joints are inspected to understand their measured resistance. The ZD2C is designed for measurements on circuit breaker contacts, switchgear contacts and bus-bar joints. These are practical applications for electrical testing and maintenance teams that need to assess contact resistance as part of equipment checks.
The instrument determines resistance using the relationship expressed by Ohm’s law: R=U/I. During a test, it displays current, time and resistance, keeping the key reading information visible together. This supports a direct review of the measurement as it is being carried out. The listed DC output current options are 100A and 200A; the corresponding measurement ranges are shown in the specifications below.
By providing the measured resistance and test current on the display, the tester gives operators information relevant to the contact or joint under examination. Results can be retained in the instrument for later reference, which can help organize inspection records and compare documented tests over time. The instrument’s recorded values should be interpreted in line with the user’s testing procedure and the requirements applicable to the equipment being assessed.
Features and Result Management
- The setting for current output time can be set between 1s and 60s, allowing the operator to set the test duration within the stated range.
- A device number can be entered to help identify and check the corresponding result conveniently.
- Current, time and resistance are displayed during testing, so the operator can view the principal test information while taking a measurement.
- The tester stores up to 500 test results, supporting the retention of measurement information for subsequent review.
- A built-in clock records the date, adding a date reference to test recordkeeping.
- Stored results include the device number, testing time and resistance. This information helps associate a result with the identified device and its test details.
Together, the device-number entry, built-in date recording and stored results provide a practical way to keep measurement information organized within the tester. These functions are useful when inspection work involves multiple identified devices or when technicians need to refer back to recorded resistance readings. They support record management without changing the measurement method or replacing the need to follow the appropriate testing procedure.
Technical Specifications
| DC output current | 100A / 200A |
|---|---|
| Output power | 100A: 1000VA; 200A: 2000VA |
| Measuring range | 100A: 1μΩ～20mΩ; 200A: 1μΩ～10mΩ |
| Resolution | 0.1～999.9μΩ: 0.1μΩ; 1mΩ～10mΩ: 1μΩ; 10mΩ～20mΩ: 10μΩ |
| Accuracy class | ± (0.5%R+0.2μΩ) |
| Ammeter accuracy | ± (0.5%I+0.1) A |
| Power source | AC 188V~242V, 47Hz～63Hz |
| Environment | -10℃～40℃; Humidity: ≤85%RH |
| Dimensions | 403mm×330mm×178mm |
| Weight | 8kg |
The measuring range and resolution are specified according to output-current option and resistance range. When selecting the appropriate test configuration, consult these ratings alongside the requirements of the application. The stated accuracy class and ammeter accuracy provide the instrument’s listed measurement performance information for technical review.
Application and Maintenance Value
The ZD2C is intended for contact-resistance measurement tasks involving circuit breakers, switchgear and bus-bar connections. Its display and stored-result functions bring measurement readings and basic test-record details together in one instrument. This can help users keep their inspection work consistent and make recorded results easier to identify and review as part of their maintenance documentation.
For ongoing use, operate the tester within its stated power-source and environmental specifications, and handle and store it according to the applicable workplace procedures. Entering the device number and reviewing the stored device number, test time and resistance can help maintain clear records. The 500-result storage capacity provides a place to retain test results on the instrument; users can manage and review those records in accordance with their own documentation practices.
This combination of contact-resistance measurement, displayed test information and record storage makes the ZD2C relevant to electrical equipment inspection and maintenance workflows. For product information or questions about suitability for a particular application, contact our team.
