UNI-T UT501B Isolatiemeter

Digitale isolatie weerstand meter UT501B

- 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