Features – KYORITSU 3123A User Manual
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1. Features
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Battery powered, the instruments test insulation up to
100000MΩ at 2500V for KEW 3121A, 200000MΩ at 5000V
for KEW 3122A and 200GΩ at 5000V and 400GΩ at 10000V
for KEW 3123A.
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Suited for heavy duty electrical maintenance and servicing of
industrial installations, cables, transformers, generators and
switchgear where high voltage insulation tests are required.
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Dual scales for low an d high ranges which change
automatically. Colour coded scales for easy reading plus
LED's that illuminate in matching colour.
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Drip proof construction. The case is sealed with rubber
gaskets to protect internal circuit against rain.
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Hard carrying case furnished as standard accessory. Houses
both instrument and test leads in compact form. Made of
plastic, it is highly water resistant.
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Designed for low power consumption. Since the maximum
current consumption is 90mA eight pieces of 1.5V SUM-3（or
equivalent ） permit about 6 hours of continuous operation
even when the instrument is used on maximum load or twice
longer on minimum load.
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Rated output voltage is maintained down to 100MΩ for KEW
3121A, 200MΩ for KEW 3122A and 0.2GΩ/0.4GΩ for KEW
3123A. This permits accurate measurements of low insulation
resistance.