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中國臺灣華儀電子EXTECH 1978年創立，EXTECH為電子安規檢測儀器的，產品包括耐壓測試儀、絕緣阻抗測試儀、接地阻抗測試儀、泄漏電流（接觸電流）儀、交流變頻電源等。
Extech 8205 絕緣阻抗測試儀超過30年的經驗累積，中國臺灣華儀電子、美國AR跨國研發團隊合作；在產品服務上，堅持專業技術、產品設計與zui高品質。近30年來，華儀對于產品完善品質的堅持與提供客戶完整解決方案的努力，獲得客戶的廣在回響，讓華儀始終穩居大中華地歐測試儀器市場。我司做為中國臺灣華儀電子EXTECH多年的戰略合作伙伴，我們將提供更好的服務及更低的價格。
| Model | 8205 | 8210 | |
|---|---|---|---|
| INSULATION RESISTANCE | |||
| Range | Resolution | Accuracy | |
| Output Voltage, DCV | 30 – 1000 | 1 | ± （1% of setting + 1 V） |
| Output Regulation DCV | ± （1% of output + 1 V） from no load to full load | ||
| Output Ripple | < 2 % | ||
| Discharge | Automatic Discharge of Device Under Test | ||
| Indicator : Green < 30 V, Red > 30 V | |||
| SETTINGS | |||
| Low-Limit Resistance, MΩ | 0.1 – 999.9 | 0.1 | Same as Resistance Measurement |
| 1000 – 9999 | 1 | ||
| 10.0 GΩ– 50.0 GΩ for MODEL 8205 | 0.1 GΩ | ||
| Delay Time, second | 1 - 999.9 | 0.1 | ±（0.1% + 0.05 sec） |
| Dwell Time, second | 0, 0.1 – 999.9 （0=continuous） | ||
| MEASUREMENT | |||
| DC Voltage, V | 0.0–100.0 | 0.1 | ± （1% of reading + 1 V） |
| 101–1000 | 1 | ||
| Resistance | 0.001MΩ - 50.0GΩ for MODEL 8205 0.001MΩ - 200.0GΩ for MODEL 8210, Auto Range | 0.001MΩ 0.01MΩ 0.1MΩ 1MΩ 0.01GΩ 0.1GΩ | 500–1000V |
| 0.1MΩ - 1GΩ,± （2% of reading + 2 counts） | |||
| 1GΩ - 20GΩ , ± （3% of reading + 2 counts） | |||
| 20GΩ –50GΩ,±（10% of reading + 2 counts） for MODEL 8205 | |||
| 20GΩ–200GΩ,±（10% of reading + 2counts） for MODEL 8210 | |||
| 30–499V | |||
| 0.1MΩ-1GΩ,± （3% of reading + 2 counts） | |||
| 1GΩ - 20GΩ , ± （5% of reading + 2 counts） | |||
| GENERAL | |||
| Input Voltage AC | 115/230Vac±15%, 50/60Hz ± 5%, Fuse 1A/ Fast acting 250VAC | ||
| PLC Remote Control | Inputs : Test , Reset, Interlock | ||
| Outputs : Pass, Fail , Progressing | |||
| Display | 4 Digits LED Display | ||
| Terminations | High Voltage Output – Alden Socket | ||
| Shielded Return – BNC Connector | |||
| Safety | Built-in Smart GFI circuit,GFI trip current 450?A max, HV shut down speed: <1mS | ||
| Calibration | Built-in software and external calibrated meters | ||
| Environment | 0-40℃, 20-80%RH | ||
| Dimension/Net Wight | 280mm（W）×89mm（H）×300mm（D）/ 4.5Kg | ||
| STANDARD ACCESSORIES | |||
| Power Cord（10A） | ×1 | ||
| Fuses | ×2 （Including a spare contained in the fuse holder） | ||
| Interlock Disable Key（1505） | ×1 | ||
| Hipot Test Lead ,1.5m（1101） | ×1 | ||
| BNC Connector Return Test Lead ,1.15m（1140） | ×1 | ||
| *product specifications are subject to change without notice. | |||