Measurement items

Insulation resistance (Applied DC voltage method)

Testing voltage

(Measurement range: AUTO/MANUAL setting is possible)

25 V ≤ V < 100 V (2.000/20.00/200.0 MΩ),

100 V ≤ V < 500 V (2.000/20.00/200.0/2000 MΩ),

500 V ≤ V ≤ 1000 V (2.000/20.00/200.0/4000 MΩ)

Basic accuracy

±2 % rdg. ±5 dgt.

25 V ≤ V < 100 V [0 to 20 MΩ]

100 V ≤ V < 500 V [0 to 20 MΩ]

500 V ≤ V ≤ 1000 V [0 to 200 MΩ]

Measurement speed

Fast: 30 ms/time, Slow: 500 ms/time (selectable)

Display

LCD (service life: 100,000 hours), 4-level backlight

Internal memory

Saved items: rated measurement voltage, comparator upper limit /lower limit values, test mode, beep sound to distinguish the result, test time, response time, resistance range, measurement speed

Memory capacity: up to 10 items (can be saved/loaded)

Comparator setting

UPPER_FAIL: Measured value ≥ upper limit value

PASS: Upper limit value > measured value > lower limit value

LOWER_FAIL: Measured value ≤ lower limit value

Judgement process

Beep sound, PASS / U.FAIL/L. FAIL: light up on LED display, When UL_FAIL, U.FAIL / L.FAIL light up simultaneously, EXT.I/O output, judgement result can be obtained via RS-232C

Test duration

Definition of test duration: Test duration = Response time + Measurement time

Function: Set the time from voltage application until pass/fail assessment

Configuration range: 0.045 s to 999.999 s (0.001 s resolution)

Response time timer

After the start of the test, comparator judgment operation can be prohibited until a set interval from 0.005 sec. to 999.999 sec. (at 0.001 sec. resolution) has passed.

Analog output

DC +4 V f.s.

Interface

RS-232C (standard), External I/O (External control input, Judgment result)

BCD output (ST5520-01 only)

Power supply

100 to 240 V AC, 50/60 Hz, 25 VA max.

Dimensions and mass

215 mm (8.46 in)W × 80 mm (3.15 in)H × 166 mm (6.54 in)D, 1.1 kg (38.8 oz)

Accessories

Instruction Manual ×1, Power cord ×1, EXT. I/O Connector ×1, Connector Cover ×1