Sew 1131 IN

● Hight quality Taut Band movement.
● Three insulation test voltages (DC) : 250V, 500V, 1000V.
● Two ranges for continuity test : 2Ω & 20Ω.
● Compact and lightweight.
● AC voltmeter with linear scale up to 600Vac.
● 200mA continuity short-circuit current.
● 1mA test current on insulation test at nominal voltage.
● Automatic discharge of capacitive and inductive circuit with charge stored in the circuit under test.
● Live warning and display of external voltage presence.
● Fuse, air gap, crowbar and overload protected.
● On line battery monitoring shows if battery is ok.
● Manual zero ohm adjustment.
● Low battery consumption.
● Mirror scale.
● Push and turn locking switch for continuous and hand free testing.
● BS 16 edition.


Insulation Resistance    
Test voltage (DC V) 250V     /   500V   /   1000V
Output voltage on
open circuit
Rated test voltage +10%
Measuring ranges 0-100MΩ / 0-200MΩ / 0-400MΩ
Mid-scale value 1MΩ     /   2MΩ     /     4MΩ
Scale multiplier ×1/2     /     ×1       /       ×2
Accuracy ± 5% of indicated value
Output short-
circuit current
≥ 1.0mA
Measuring ranges 2Ω / 20Ω
zero Ω adjustment by knob ˇ
Output short-
circuit current
 ≥ 200 mA
Accuracy ± 1.5% of scale length
AC Voltage    
Range 0-600V AC
Accuracy ± 3% of scale length
Voltage warning Warning light circuit live lit From 90Vdc /
70Vac, Buzzer beep from 24V ac/dc
Battery check Battery check indicate good batteries from
8.5Vdc to 13Vdc during a load test of 250mA.
Battery OK Battery OK LED lit from 8.5Vdc
and is operative while testing.
Dimensions 175(L) × 85(W) × 75(D)mm
(battery included)
Approx. 650g
Power source 1.5V (AA) × 8 
Safety standard EN 61010-1 CAT III 600V
EN 61326-1


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