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[6] Specifications
6-1 Insulation Resistance Measuring Block
1. Rated voltage
DG525: 500 V DC/250 V DC, 2 ranges
DG251: 250 V DC/125 V DC, 2 ranges
2. Measuring voltage/current characteristics
When measuring terminals are open
DG525: 500 V DC range — 600 V (+20% max.)
> 500 V guaranteed at 500 k
Ω
250 V DC range — 300 V (+20% max.)
> 250 V guaranteed at 250 k
Ω
DG251: 250 V DC range — 300 V (+20% max.)
> 250 V guaranteed at 250 k
Ω
125 V DC range — 150 V (+20% max.)
> 125 V guaranteed at 125 k
Ω
When measuring terminals are shorted
Approx. 1.5 mA max.
3. Measuring ranges
0 to 2 M
Ω
/1 to 20M
Ω
/10 to 200M
Ω
/
100 to 2000M
Ω
, 4 auto range switching
4. Measuring accuracy 2 M
Ω
/20 M
Ω
/200 M
Ω
ranges:
Within
±
(2% of r 2 digits)
2000 M
Ω
range:
Within
±
(5% of r 2 digits)
5. Applied voltage indication
Red LED with 5 mm dia.
6-2 AC Voltage Measuring Block
1. Measuring range
0 to 600 V max.
0 to 200 V/10 to 600 V, 2 auto range
switching
2. Measuring accuracy Within
±
(1% of r 0.5% of range +
1 digit)
Frequency: 50 to 400 Hz
3. Input resistance
1 M
Ω
