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UT501B insulation resistance tester. The UT500 series electrical insulation testers are used to measure the insulation resistance of electrical equipment and household appliances during regular inspections. This is done by measuring the insulation resistance between the electrical circuits or between the circuits and ground (equipment ground). The UT500 series can measure insulation resistance, AC voltage, low resistance, PI (polarization index) and DAR (dielectric absorption). The individual devices of the UT500 series differ from each other by test voltage ranges (UT501A 100V to 1000V, UT501B 250V to 1000V, UT502A 500V to 2500V), maximum measured insulation resistance (UT501A 0MΩ to 5GΩ, UT501B 0MΩ to 5GΩ, UT502A 0MΩ to 20GΩ) and some other parameters.
These are testing and inspection devices to ensure the correct function of transformers, generators, high-voltage motors, power capacitors, power cables, arresters, switches, electrical machines and appliances. They are ideal devices for performing electrical maintenance and are manufactured in accordance with IEC61010 and IEC61557 standards.
Parameters of the UT501B product :
- measurement of insulation resistance 0MΩ to 5.5GΩ - DC test voltage 250V / 500V / 1000V - measurement of polarization index and dielectric absorption - low resistance measurement 0 to 200Ω - AC voltage measurement in the range of 30 to 600V (50 / 60Hz) - overload indication at >5.5GΩ - LCD backlit display with a range of 1999 - automatic range switching - secondary display for display of test voltage and switched on functions - red light warning - power supply 6x battery 1.5V (AA) - low battery indication - overvoltage protection CATIII 600 V
Technical parameters of UT501B :
- rated test voltage / insulation resistance measuring range / rated measuring current / internal resistance 250V / 0.00MΩ - 5.5GΩ / 1.00mA - 1.10mA / 250kΩ 500V / 0.00MΩ - 5.5GΩ / 1.00mA - 1.10mA / 500kΩ 1000V / 0.00MΩ - 5.5GΩ / 1.00mA - 1.10mA / 1MΩ - open circuit voltage tolerance: + 10% - short-circuit current of test voltage: approx. 2mA - insulation resistance measurement accuracy range: 0.00MΩ to 99.9MΩ: ± (3% + 5) / 100MΩ to 5.5GΩ: ± (5% + 5)
- measurement of the polarization index for a measurement time of 10 minutes / 1 minute - PI value / criterion: ≥ 4 / best, 4 to 2 / good, 2.0 to 1.0 / warning, ≤ 1.0 / bad
- measurement of dielectric absorption for 60sec / 30sec - DAR value / criterion: ≥ 1.4 / best, 1.25 to 1.0 / good, ≤ 1 / bad
- low resistance measurement (circuit continuity) - range: 0.00Ω to 200Ω - resolution: 0.01Ω - display reset for more accurate measurements: yes, ZERO button - open circuit voltage before measurement: approx. 5.0V - current during measurement: approx. 200mA - accuracy: ± (2% + 3)
- AC voltage measurement - in the range: 30V to 600V (50 / 60Hz) - resolution: 1V - accuracy: ± (2% + 3)
- display: multifunctional LCD measuring 70.6 mm x 34 mm, range 1999 - display backlight: possibility of white backlight or red backlight during warning - automatic range switching: yes - buzzer: yes, high voltage indication - automatic discharge of internal capacity after measurement: yes - power supply: 6x alkaline battery 1.5V (AA) - low battery indication: yes, when the voltage drops below 7V - weight: 0.7kg (including battery) - product dimensions: 150 x 100 x 71mm - product color: red and gray - conditions for factory calibration: ambient temperature 23 ° C ± 5 ° C, humidity 45% to 75%
- recommended calibration: once a year, calibration protocol must be ordered separately - working conditions: 0 ° C to +40 ° C / relative humidity is 85% or less - storage conditions: -20 ° C to +60 ° C / relative humidity is 90% or less - altitude: max. 2000m
Contents of individual packaging :
- device UT501B: 1 pc - test leads: 1 pair - crocodile clips: 1 pair - AA 1.5V battery (LR6): 6 pcs - English, Czech, Slovak instructions: 1pc
Wholesale packaging :
- standard quantity in a carton: 20 pcs - standard carton dimensions: 500 x 380 x 330 mm - total weight of carton: approx. 20.9 kg
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