Product Features



(1) The insulation test of the instrument can measure up to 20GΩ at 500V for HT2501, up to 40GΩ at 1000V, and up to 100GΩ at 2500V; for HT2550, it can measure up to 100GΩ at 2500V and up to 200GΩ at 5000V; for HT2503, it can measure up to 200GΩ at 5000V and up to 400GΩ at 10000V.



(2) The rated output voltage is maintained with load resistance as low as 4MΩ/8MΩ/20MΩ for HT2501; 20MΩ/40MΩ for HT2550; and 40MΩ/80MΩ for HT2503, enabling the instrument to accurately measure low insulation resistance.



(3) Automatically switches between high and low range dual-scale indication, with colored scales for easy reading and corresponding LED display colors.



(4) The whole unit adopts an ABS plastic casing with a portable design, featuring strong anti-interference capability, compact structure, and exquisite appearance.



(5) The instrument uses an ultra-thin taut-band meter movement, providing strong shock resistance.



(6) Dual AC/DC power supply, built-in rechargeable battery and intelligent charging module, with high output power (Type C).



(7) It is an ideal test instrument for measuring insulation resistance of transformers, instrument transformers, generators, high-voltage motors, power capacitors, power cables, lightning arresters, etc.



Technical Parameters



Model HT 2550
Output Voltage 2500V DC 5000V DC
Accuracy Temperature 23℃±5℃
Insulation Resistance 5MΩ～100GΩ ±5% 10MΩ～200GΩ ±5%
Output Voltage 20MΩ～100GΩ 0～+10% 40MΩ～200GΩ 0～+10%
High Voltage Short Circuit Current  ≥1mA
Power Supply  8 AA batteries
Operating Temperature & Humidity  -10℃～40℃, max relative humidity 85%
Storage Temperature & Humidity  -20℃～60℃, max relative humidity 90%
Insulation Performance  With 1000V DC between circuit and case, max 2000MΩ
Withstand Voltage Performance With 2500V AC between circuit and case, withstand for 1 minute
Dimensions  230×190×90mm3(L×W×H)
Weight  2KG
Accessories  Test leads set, instruction manual, certificate