Testing Cables; Specifications - Extech Instruments 380260 User Manual

Testing Cables

Specifications

Range Specifications
Accuracies are specified as % reading + digits at 23
MEGOHMMETER RANGES
AC VOLTAGE (40Hz-400Hz)
DC VOLTAGE
RESISTANCE
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1. Disconnect the cable under test from the line.
2. Disconnect the opposite end of the cable to avoid errors as a result of
leakage from other equipment.
3. Check each conductor to ground and/or lead sheath by connecting one
meter lead to ground and/or lead sheath and the other meter lead to
each of the conductors in turn.
4. Check insulation resistance between conductors by connecting meter
leads to conductors in pairs. Refer to diagram at right.
Range
200M250V
200M500V
0-1000M1000VDC
1000-2000M1000VDC
Range
200M250V
200M500V
0-1000M1000VDC
1000-2000M1000VDC
Range Resolution
750VAC 1V
Range Resolution
1000VDC 1V
Range Resolution
200 0.1
200k 0.1k
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C ± 5 C < 80% RH
Resolution Accuracy
0.1M ±3% + 5d
±3% + 5d
0.1M
1M ±3% + 5d
1M ±5% + 5d
Test Current
250k(load)
500k(load)
1mA
1M
Accuracy Input Impedance
±1.2% + 10d
10M
Accuracy Input Impedance
±0.8% + 3d
10M
Accuracy Max. Open Circuit
Voltage
±1% + 2d 4.5V
±1% + 2d 3V
6
Terminal Voltage
250V + 10% ~ -0%
500V + 10% ~ -0%
1000V + 10% ~ -0%
1000V + 10% ~ -0%
Short Circuit Current
<1mA
Overload
Protection
750Vrms
Overload
Protection
1000Vrms
Overload
Protection
250Vrms
250Vrms
380260-en-EU_V2.5 8/14
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