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Megger MIT2500 绝缘电阻测试仪 2.5KV电动兆欧表
2.5KV电动兆欧表
DESCRIPTION
The MIT2500 insulation and continuity tester has been designed for Electrical and Industrial test applications, where operation voltages exceed 1000 V and higher insulation test voltages are needed.The MIT2500 offers both fixed range voltages of 50 V, 100V,250 V, 500 V, 1000 V and 2500 V, as well as a variable range that allows any voltage between 50 V and 2500 V to be “dialled in”.This is supported by the new test voltage feedback control, which maintains the output test voltage to within 2% of the selected range, even when under test.
FEATURES INCLUDE:
■ ■ Test voltages (New)
- 50 V, 100 V, 250 V, 500 V, 1000 V, and 2500 V
■ ■ Guard terminal
- Improved performance on higher insulation test ranges
■ ■ 2.5 kV Silicone test leads (New)
- Purpose designed high 2.5 kV silicone test leads are included as well as standard 1000 V CAT III / 600 V CAT IV general purpose test leads.
■ ■ Variable test voltage (New)
- Adjustable test voltage from 50 V to 999 V in 1 V steps,1000 V to 2500 V in 10 V steps
■ ■ 2% Test voltage accuracy
- The output test voltage is maintained within the tolerance of -0% +2% +2 V
■ ■ Stabilised test voltage
- The voltage is feedback controlled to ensure it remains within specification throughout the full test range
■ ■ Test voltage display (New)
- The actual test voltage is displayed on the smaller digital readout, with the measurement on the larger digital display.
■ ■ Measurement range displayed
– The range voltage is displayed during selection.
■ ■ Measurement voltage display (New)
- The measurement voltage is displayed during the test.
■ ■ Analogue arc
- The display also features an analogue arc to replicate the response of a moving coil display.
■ ■ PI and DAR
- Automatic Polarisation Index (PI) and Dielectric Absorption Ratio
(DAR) functions. Polarisation Index (PI):10 min / 1 minute ratio
Dielectric Absorption Ratio (DAR): 60 sec / 30 sec ratio
Test ranges extend from 10 GΩ to 200 GΩ depending on test
SPECFICATIONS：
Insulation
Insulation accuracy
50 Volts 10 GΩ ± 2% ± 2 digits ± 4.0% per GΩ
100 Volts 20 GΩ ± 2% ± 2 digits ± 2.0% per GΩ
250 Volts 50 GΩ ± 2% ± 2 digits ± 0.8% per GΩ
500 Volts 100 GΩ ± 2% ± 2 digits ± 0.4% per GΩ
1000 Volts 200 GΩ ± 2% ± 2 digits ± 0.2% per GΩ
2500 Volts 200 GΩ ± 2% ± 2 digits ± 0.2% per GΩ
Guard terminal
performance
<5% error at 500 kΩ parallel circuit
resistance with 100 MΩ load
Display range Analogue: 1 GΩ full scale
Resolution 0.1 kΩ
Short circuit/charge
current
2 mA +0% -50% to EN 61557-2 (2007)
(except 2500 V)