Sew ST-1503

● High quality Taut Band movement.
● Measures insulation(MΩ), continuity(Ω) and AC voltage.
● Instant operation is possible with a push button, convenient timer is
    provided with automatic power off after three to five minutes to save
    the battery power.
● LED (red) indication when testing insulation and continuity.
● Use of a high efficiency and accurate DC-DC converter.
● Most suitable for insulation resistance measurement of electrical
    household appliances, power line distribution and installation.
Insulation Resistance    
Test voltage (DC V) 500V     /     1000V
Output voltage on
open circuit
Rated test voltage +10%
Measuring ranges
(Mid-scale value)
0-1000MΩ / 0-2000MΩ
   (20MΩ)   /   (40MΩ)
Accuracy ± 5% rdg
Short circuit current 1mA
Maximum battery current Approx.
80mA (500V) / 150mA (1000V)
Measuring ranges 0-100Ω
Line frequency range 40-70Hz
Open circuit voltage 100mV
Short circuit current 22.5mA
Accuracy ± 5% of scale length
AC Voltage    
Range 0-600V AC
Accuracy ± 2.5% of full scale
Dimensions 163(L) × 100(W) × 50(D)mm
(battery included)
Approx. 440g
Power source 1.5V (AA ) × 6
Safety standard EN 61010-1 CAT II 600V


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