台湾标准电机SEW仪器仪表--1851 IN Insulation Testers Up To 1 kV Digital
1851 IN Insulation Testers Up To 1 kV (Digital)
FEATURES
A LCD indicated instrument for Insulation (M Ohm), Continuity (Ohm) and AC Voltage.
Three insulation test voltages (DC) : 250V, 500V, 1000V.
3-1/2 digital LCD (2000 counts).
68 x 34mm (1.338" x 2.677") large LCD display.
Automatic curcuit discharge.
Test insulation at rated voltage into a 1mA load.
200mA resistance tests short circuit test current.
External voltage warning indication.
Fuse protectin.
CAT III 600V..
BS 16th edition.
WHY TEST IS NECESSARY
INSULATION
Every electrical apparatus and installation need to be safe for the user and for the equipment itself. Electrical conductors of electricity need to be insulated from each other, so that they do not create electrical hazard or unnecessary consumption.
Badly insulated circuits can create leakage current which can be dangerous and trip your GFCI, RCCB or ELCB. Each couontry regulate those levels at which the insulation is acceptable. Generally, insulation resistance measurements are done between each conductor and the earth, and between each conductors.
CONTINUITY
Checking the continuity of wires, complete circuits, connections, closure of contacts, circuit breakers, fuses, bonding resistance of connectinos, etc ... are all very important.
SPECIFICATIONS
INSULATION RESISTANCE
Test Voltage (DC V)
250V/500V/1000V
Output Voltage Open Circuit
Rated test voltage + 10%
Measuring Ranges
250V/500V : 0-200M Ohm, 1000V : 0-2000M Ohm
Output Current
1mA DC
Power Consumption
Max. consumption current approx. 250mA
Accuracy
250V/500V : +/- (1.5%rdg+5dgt), 1000V : +/- (3%rdg+3dgt) - under 1G Ohm/2000M Ohm, +/- (1.5%rdg+5dgt) - under 2G Ohm/2000M Ohm
A LCD indicated instrument for Insulation (M Ohm), Continuity (Ohm) and AC Voltage.