UT500 series insulation testers are used to measure the insulation resistance of electrical equipment and household appliances. This is done by measuring the insulation resistance between electrical circuits or between circuits and ground. UT500 series can measure insulation resistance, AC Voltage, low resistance, PI (Polarization Index) and DAR (Dielectric Absorption). These are dieal  tools for ensuring transformers, genera-tors, high voltage motors, capacitors, cables, arresters and other electrical equipment that can oprate in a safe and accurate manner.

Specifications	Range		UT501A	UT501B	UT502A
Insulation resistance (Ω)	Test voltages	100V/250V/500V/1000V	0%~10%
		250V/500V/1000V		0%~10%
		500V/1000V/2500V			0%~10%
	100V	0MΩ~100MΩ	±(3%+5)
	250V	0MΩ~99.9MΩ	±(3%+5)	±(3%+5)
		100MΩ~5GΩ	±(5%+5)	±(5%+5)
	500V	0MΩ~99.9MΩ	±(3%+5)	±(3%+5)	±(3%+5)
		100MΩ~5GΩ	±(5%+5)	±(5%+5)	±(5%+5)
	1000V	0MΩ~99.9MΩ	±(3%+5)	±(3%+5)	±(3%+5)
		100MΩ~5GΩ	±(5%+5)	±(5%+5)	±(5%+5)
	2500V	0MΩ~99.9MΩ			±(3%+5)
		100MΩ~9.9GΩ			±(5%+5)
		10GΩ~20GΩ			±(10%+5)
	Load current	50V (R=50kΩ) 1mA	0%~10%	0%~10%	0%~10%
		100V (R=100kΩ) 1mA	0%~10%	0%~10%	0%~10%
		250V (R=250kΩ) 1mA	0%~10%	0%~10%	0%~10%
		500V (R=500kΩ) 1mA	0%~10%	0%~10%	0%~10%
		1000V (R=1MΩ) 1mA	0%~10%	0%~10%	0%~10%
		2500V (R=1MΩ) 1mA			0%~10%
Short-circuit current			<2mA	<2mA	<2mA
Low resistance (Ω)	0.01Ω~200Ω (about 5.0V/>200mA）			±(2%+3)	±(2%+3)
AC voltage (V)	30V~750V		±(2%+3)
	30V~600V			±(2%+3)	±(2%+3)
Features
Display count			2000	2000	2000
DAR	60s/15s and 60s/30s			√	√
PI				√	√
Auto range/Low battery indication			√	√	√
LCD backlight/Light alarm			√	√	√
Buzzer alarm/High voltage indication			√	√	√
Over load indication/Auto discharge			√	√	√
Test voltage secondary display			√	√	√
10MΩ internal resistance test			√	√	√
Meets IEC 61557	61557-1:2007; 61557-2:2007; 61557-4:2007 (UT502A only)
General Characteristics
Power	1.5V battery (LR6) x 6
Display	70.6mm x 34mm
Product color	Red and grey
Product net weight	500g
Product size	150mm x 100mm x 71mm
Standard accessories	Batteries, test leads, alligator clips, gallus, test probes (UT502A)
Standard individual packing	Gift box, carrying bag, English manual
Standard quantity per carton	20pcs
Standard carton measurement	500mm x 380mm x 330mm (0.063 CBM per standard carton)
Standard carton gross weight	UT501A: 17.7kg; UT501B: 20.9kg; UT502A: 18.9kg