Product Features
(1) The insulation test of the instrument can measure up to 20GΩ at 500V, 40GΩ at 1000V, and 100GΩ at 2500V for HT2501; for HT2550, it can measure up to 100GΩ at 2500V and 200GΩ at 5000V; for HT2503, it can measure up to 200GΩ at 5000V and 400GΩ at 10000V.
(2) The rated output voltage can be maintained with load resistances as low as 4MΩ/8MΩ/20MΩ for HT2501; 20MΩ/40MΩ for HT2550; and 40MΩ/80MΩ for HT2503, enabling precise measurement of low insulation resistance.
(3) Automatic switching between high and low range dual-scale indication, with color-coded scales for easy reading, and corresponding LED color display.
(4) The whole unit adopts an ABS plastic casing with a portable design, featuring strong anti-interference capability, compact structure, and elegant 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 enclosure, max 2000MΩ | ||
| Withstand Voltage Performance | With 2500V AC between circuit and enclosure, withstand for 1 minute | ||
| Dimensions | 230×190×90mm3(L×W×H) | ||
| Weight | 2KG | ||
| Accessories | Test leads set, manual, certificate | ||
