YF-509 Digital Insulation Tester
- Direct Current Voltage (DCV) and Alternating Current Voltage (ACV) measurement.
- Continuity Test
- High Resistance Insulation Test
Application
The unit has select able long duration and momentary operation switches for high resistance measurements.Features
- Measures high insulation resistance (0.1MΩ～2000MΩ), manual range , of 200MΩ / 250V,200MΩ / 500V and 2000MΩ / 1000V.
- Measures DC voltage (0 V~1000V), AC Voltage( 0V ~ 750V).
- Has a DATA HOLD switch to hold LCD readings.
- Has a Maximum Reading Hold function.
Specifications
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Display :3½digit LCD that indicates values up to 1999, units, decimal point and symbols.
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Polarity indication : Automatically displays “ - “ symbol during negative input.
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Zero adjustment : Automatic zeroing.
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Overload indication :Display the highest “OL” at left side.
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Low battery indication :Replace battery as LCD displays “
“. -
Sampling rate : 2.5 times/second.
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Dimensions:160x100x52mm(length x width x height).
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Weight: Approximately 480 grams.(incl. Battery)
Electrical Specifications(23℃±5℃, below 80％RH )
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DC Voltage
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Range
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Resolution
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Accuracy
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Input
Impedance
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Overload
Protection
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DCV
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1V
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±(0.5% +1)
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10MΩ
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DC 1000V
AC 750V rms
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AC Voltage
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Range
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Resolution
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Accuracy
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Input
Impedance
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Overload
Protection
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DCV
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1V
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±(0.8% +4)
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10MΩ
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DC 1000V
AC 750V rms
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Insulation High-resistance
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Range
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Resolution
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Accuracy
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Tolerance
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200M/250V
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0.1MΩ
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±(3%+3)
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0.4mA max
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200M/500V
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0.1MΩ
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0.9mA max
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2000M/1000V
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1MΩ
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±(3%+5)
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1.7mA max
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Measurement Voltage
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Range
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Terminal Measurement
open Voltage
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Supported Range
Terminal Voltages
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250V/50MΩ
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Rated voltage ±10%
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When the resistance is in the 1MΩrange, the rated
voltage should reach up to 90%. |
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500V/1000MΩ
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Rated voltage ±10%
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Rated voltage ±10%
When the resistance is in the 20MΩrange, the rated voltage |
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1000V/2000MΩ
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Rated voltage ±10%
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When the resistance is in the50MΩ range,
the rated voltage should reach up to 90%. |
US 13787 
GB 10731 
CA 9817 
AU 9409 
IE 6567 
VN 6552 
NZ 3036 
BR 2906 
