The UNI-T UT505A Handheld Insulation Resistance Tester emerges as a critical tool for electrical professionals who demand precision, reliability, and comprehensive diagnostic capabilities. Bridging the gap between traditional multimeters and advanced testing instruments, the UT505A delivers unparalleled insights into electrical system integrity across multiple industries and applications.
| Parameter | Specification |
|---|---|
| Insulation Resistance Range | 50V: 0.1MΩ~50MΩ (±3%+5), 50MΩ~1GΩ (±3%+3) 100V: 0.1MΩ~100MΩ (±3%+5), 100MΩ~1GΩ (±3%+3) 250V: 0.1MΩ~200MΩ (±1.5%+5), 200MΩ~1GΩ (±1.5%+5) 500V: 0.1MΩ~500MΩ (±1.5%+5), 500MΩ~1GΩ (±1.5%+5) 1000V: 0.1MΩ~2000MΩ (±1.5%+5), 2GΩ~9.9GΩ (±10%+3) |
| Voltage Range | 3.0V to 700V |
| Current Range | 0.5mA to 24A |
| Power Range | 1W to 12kW |
| Display | 6000-count LCD |
| Power Source | 6 × 1.5V batteries (LR6) |
| Dimensions | 103mm × 225mm × 59mm |
| Weight | 630g |
| Feature | UT505A | UT505B |
|---|---|---|
| Insulation Resistance Accuracy | 0%~10% variation | 0%~20% variation |
| Auto Fuse Check | No | Yes |
| High Voltage Output Alarm | No | Yes |
| Data Storage | Standard | 99-group data storage |
| Recommended Applications | Standard electrical testing and maintenance | Advanced diagnostics and critical infrastructure testing |
Manufacturing facilities rely on the UT505A to prevent unexpected equipment failures and optimize maintenance schedules. By providing detailed insights into motor insulation, electrical panel conditions, and critical machinery electrical systems, the instrument helps maintenance engineers:
Power distribution professionals utilize the UT505A for comprehensive assessment of:
Solar and wind energy technicians depend on precise insulation testing to ensure:
Critical communication infrastructure requires meticulous electrical testing. The UT505A supports:
The Dielectric Absorption Ratio (DAR) is a critical diagnostic method for assessing insulation condition. It involves measuring the ratio of insulation resistance at two specific time intervals, typically 30 seconds and 60 seconds after applying a test voltage.
A DAR value significantly different from 1 can indicate:
The Polarization Index (PI) provides a more comprehensive evaluation of insulation condition by measuring the ratio of insulation resistance at 10 minutes to the resistance at 1 minute after applying a test voltage.
These advanced diagnostic tests transform the UT505A from a simple resistance meter to a powerful predictive maintenance tool.
"The UT505A has become an indispensable tool in our electrical maintenance arsenal. Its precision and versatility have helped us catch potential issues before they become critical failures."
- Elena R., Industrial Maintenance Engineer"As a renewable energy technician, I rely on the UT505A's detailed diagnostic capabilities to ensure our solar installations maintain peak performance and reliability."
- Michael K., Solar Systems SpecialistUNI-T provides a comprehensive 1-year warranty on the UT505A, covering manufacturing defects and component failures under normal use conditions. Our dedicated technical support team offers expert guidance to help you maximize the value of your investment and ensure reliable electrical testing capabilities.
