Use this handheld, portable and accurate meter to measure the insulation resistance of transformers, motors, cables, switches, electrical appliances and a wide variety of other types of electrical equipment.
The UT505A comes with several different selectable voltages of 50V, 100V, 250V, 500V and 1000V. This gives it the ability to measure insulation resistance levels from as low as 0.01MΩ up to a high threshold of 20.0GΩ and a special low resistance mode can also be used to measure to 20.0kΩ. Both AC/DC voltage can also be measured up to 600V.
A number of additional functions such as DAR (dielectric absorption ratio), polarisation index and a comparison function for easy determination of difference between tests are also included.
Output Voltage | 50V stepping 10% | 50-120% | 0% - +10% | 250V | 50V output range: 25V - 60V |
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100V stepping 10% | 100V output range: 50V - 120V | ||||
250V stepping 10% | 250V output range: 125V - 300V | ||||
500V stepping 10% | 500V output range: 250V - 600V | ||||
1000V stepping 10% | 1000V output range: 500V - 1200V | ||||
Rated Current | 1mA | 0 - 10% | 250V | 50V: load resistance 50kΩ | |
1mA | 100V: load resistance 100kΩ | ||||
1mA | 250V: load resistance 250kΩ | ||||
1mA | 500V: load resistance 500kΩ | ||||
1mA | 1000V: load resistance 1MΩ | ||||
Short-Circuit Current | Less than 2mA | High-voltage output terminal is short circuited with EARTH terminal | |||
Measurement of Insulation Resistance | (50V) 0.01MΩ - 19.99MΩ 20.0MΩ - 50.0MΩ |
0.01MΩ 0.1MΩ |
0.01MΩ - 50.0MΩ: 3% + 5 |
25V | |
(100V) 0.01MΩ - 19.99MΩ 20.0MΩ - 100.0MΩ |
1MΩ 0.01GΩ |
0.01MΩ - 100.0MΩ 3% + 5 |
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(250V) 0.01MΩ - 19.99MΩ 20.0MΩ- 200.0MΩ |
0.01MΩ 0.1MΩ |
0.01MΩ - 200.0MΩ 1.5% + 5 |
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(500V) 0.01MΩ - 19.99MΩ 20.0MΩ - 199.9MΩ 200MΩ - 500MΩ |
0.01MΩ 0.1MΩ 1MΩ |
0.01MΩ - 500MΩ 1.5% + 5 |
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(1000V) 0.01MΩ - 19.99MΩ 20.0MΩ - 199.9MΩ 200MΩ - 2000MΩ 2.0GΩ - 20.0GΩ |
0.01MΩ 1MΩ 0.1GΩ |
0.01MΩ - 200.0MΩ: 1.5% + 5 |
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200MΩ - 2000MΩ: 1.5% + 5 |
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2.0G - 10.0GΩ: 10% + 3 |
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10.0GΩ - 20.0GΩ: 20% + 10 |