The model 501 can be used for general purpose
1
Rev. 04-15
insulation tests that require voltages from 50V to 1000V
only.
The Instrument is equipped with AC and DC measuring
ranges up to 1000V. This is advantageous for testing for
the absence of voltage and the discharge of capacitive
devices under test.
The 501 features a quick testing signal lamp within the
test probe that illuminates the work area. The signal
lamp can also be used for quick Pass/Fail evaluations
of insulation resistances. Minimum values for insulation
resistances are present if the lamp lights up.
Comes equipped with built-in test probes, an alligator clip,
a leatherette carrying case and batteries.
501 Insulation Tester
• Five Test Voltages: 50, 100, 250, 500, and 1000 VDC
• Voltage Measurement to 1000 V AC/DC
• Test Probe Signal Lamp Illuminates Work Area and Indicates Pass/Fail of Insulation
Resistance
• Battery Powered with Battery Test and Battery Charge Indicator
• Rugged Tester Design for Industrial Applications with Leatherette Carrying Case
Ordering Information
Accessories Catalog Number
501 Insulation Tester, 1000V 12501
Measuring Ranges
2
Rev. 04-15
Insulation Resistance
Measuring
Range
0...50KΏ
200KΏ...20MΏ 40KΏ
0...100KΏ
400KΏ...40MΏ 80KΏ
0...250KΏ
1MΏ...100MΏ 200KΏ
0...500KΏ
2MΏ...200MΏ 400KΏ
0...1MΏ
4MΏ...400KΏ 800KΏ
0...4KΏ 9V - -
(1) Switching Accuracy
Open-Circuit
Voltage U
60V
120V
300V
600V
1200V
Internal
Resistance R
30KΏ
60KΏ
150KΏ
300KΏ
600KΏ
501 Insulation Tester
Lamp in Test Prod
Lights for Resistance (1)
> 100KΏ20KΏ...1MΏ 10KΏ
> 200KΏ40KΏ...2MΏ 20KΏ
> 500KΏ100KΏ...5MΏ 50KΏ
> 1MΏ200KΏ...10MΏ 100KΏ
> 2MΏ400KΏ...20MΏ 200KΏ
Direct and Alternating Current
Measuring
Range Frequency
0 to 1000V AC/DC 0 or 40 to 200Hz 900KΏ 1200V AC/DC Continuous ± 2.5%
Internal
Resistance
Maximum
Overload
Intrinsic
Error (1)
(1) Referring to scale length
Specications subject to change without notice
501 Insulation Tester
3
Rev. 04-15
Specications
REFERENCE CONDITIONS
Ambient Temperature 73°F (23°C) ± 4°F (2°C)
Relative Humidity 45 to 55%
Measurement Magnitude Frequency 45-65 Hz (voltage measurements)
Line Voltage Waveform Sine, deviation between effective and rectied value < .5%
Battery Voltage 9V ± .5V
Operating Position Horizontal
ELECTROMAGNETIC COMPATIBILITY EMC
Interference Emission EN 50081-1: 1992
Interference Immunity EN 50082-1: 1992
ELECTRICAL SAFETY
Designed to IEC 1010-1 Protection Class II
Test Voltage ≈ 5.55Kv
Overvoltage Classication II
Pollution Degree 2
Protection Housing IP52
AMBIENT CONDITIONS
Operating Temp. Range 32°F (0°C) to 104°F (40°C)
Storage Temp. Range -4°F (-20°C) to 140°F (60°C) (without batteries)
Relative Humidity Max. 45-55%, condensation must be avoided
MECHANICAL DESIGN
Dimensions W 6.50” (165mm) x D 4.33” (110mm) x H 4.92” (125mm)
Weight 3.5 lbs. (1.6kg) (with batteries)
POWER SUPPLY
Standard or Storage Battery 6 ea. 1.5V “D” size batteries
Working Range 7V to 10V
Battery Service Life
Number of possible measurements with 1 set of “D” size batteries (with lamp in
test prod switched off): at least 3,000 measurements of an insulation resistance
of 1MΏ (Nominal Voltage of1000 V, 5 sec. Measurement duration, switched off
for 25 sec. etc.)
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