Megger MIT2500 絕緣電阻測試儀 2.5KV電動兆歐表

Megger MIT2500 絕緣電阻測試儀 2.5KV電動兆歐表

2.5KV電動兆歐表

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)