Insulation testing can be divided into two method categories:
Installation (Acceptance) Testing – testing insulation resistance is important when installing new electrical machinery or equipment, for two reasons:
- Ensures that the insulation is in satisfactory condition to begin operation
- Provides a baseline reading to use as a reference for future testing
Maintenance Testing – Measurements taken during routine maintenance tests can give valuable information about the quality of insulation as conditions vary due to fluctuating factors like moisture and temperature. Three such tests:
- Short time/spot reading
- Time resistance method
- Step voltage (tip-up)
Generators, motors, transformers, cables and switchgear all require routine maintenance, and the test techniques available on the Megger MIT525 5kV Insulation Resistance Tester and Megger MIT1025 10kV Insulation Resistance Tester provide valuable diagnostic information.
The MIT525 and MIT1025 test the insulation resistance of:
- High-voltage power cables and high-voltage buses
- Large motor/generator windings
- Line and substation transformers
The Insulation Testers also perform spot tests, step voltage tests, dielectric discharge tests, ramp tests and dielectric absorption tests for the following applications:
- Acceptance testing at installation to check conformance to specifications
- Routine preventative/predictive maintenance testing after installation
- QA testing as part of the manufacturing process
- Diagnostic testing to isolate faulty components for repair
Features:
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MIT 525 |
MIT1025 |
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Related electrical test equipment available for rent from Protec:
AEMC 1026 1kV Digital Megohmmeter
Amprobe DM-III Multitest Power Quality Recorder
Metrel 2077 5kV Insulation Resistance Tester
This electrical test equipment is available for rent, lease, or purchase from Protec Equipment Resources. We are here to help you with your testing equipment needs.
Protec’s Calibration Lab offers accurate and affordable calibration services for all makes and models of electrical test and measurement equipment. Contact us today for a quote.
