Megger UNI-T UT502A 2500V 

Model: UT502A : ali.pub/z42g0
Insulation Resistance(Ω): Test Voltage: 500V/1000V/2500V 0%~10%
500V: 0.00MΩ~99.9MΩ ±(3%+5) ; 100MΩ~5.5GΩ ±(5%+5)
1000V: 0.00MΩ~99.9MΩ ±(3%+5) ; 100MΩ~5.5GΩ ±(5%+5)
2500V: 0.00MΩ~99.9MΩ ±(3%+5) ; 100MΩ~9.9GΩ ±(5%+5) ; 10.0GΩ～20.0GΩ ±(10%+5)
Load Current: 500V(R=500KΩ) 1mA 0%~10% ; 1000V(R=1MΩ) 1mA 0%~10% ; 2500V(R=2.5MΩ) 1mA 0%~10%
Short Circuit Current: 2mA
CONTINUITY(Ω): Test Voltages: about 5.0V ±(2%+3) ; 0.01Ω~200Ω ±(2%+3); Max Current: 200mA
AC Voltage (V): 30V~750V ±(2%+3)

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