— Insulation Testers · Motor-Operated
CIE/777 HM Motor-cum-Hand Driven Insulation Tester
Motor-cum-hand driven insulation tester — mains motor for PI testing, hand-crank backup for field use. 500 V to 10,000 V.
CIE® Guarantee
- CIE® Registered Trade Mark
- Calibrated Before Despatch
- 12-Month Warranty
- Made in India
- Custom Ranges Available
About This Instrument
The CIE/777 HM combines mains-motor drive with a collapsible hand-crank backup in one instrument. It shares the same motor-driven sustained-voltage capability as the CIE/777 for polarization index (PI) and dielectric absorption testing, while the centrifugal governor (clutch) on the hand-driven circuit ensures constant output voltage when operating by hand crank where mains power is unavailable. The collapsible generator handle is specific to the 777 HM — it is not present on the plain CIE/777. Weight is 12 kg (including top cover), notably heavier than the 777's 9 kg due to the additional hand-drive mechanism. Housed in the same seasoned wooden cabinet with sunmica finish. Conforms to IS: 2992-1987. Note on HV testing leads: catalogue lists HV leads as optional/extra cost; price list states one pair supplied standard. Confirm with factory.
Technical Specifications
| Specification | Value |
|---|---|
| Drive | Mains motor (230 V, 50 Hz A.C.) plus collapsible hand-crank backup |
| Body | Seasoned wooden cabinet with sunmica finish, detachable lid, handle, lock |
| Scale Length | 100 mm (approx.) |
| Accuracy | As per IS: 2992-1987 |
| Dimensions (incl. top cover, approx.) | 14 × 10 × 10 inch |
| Weight (incl. top cover) | 12 kg (approx.) — heavier than plain CIE/777 (9 kg) |
| Response Time | 3 seconds |
| Rated Voltages Available | 500 V / 1000 V / 2500 V / 5000 V / 10000 V |
| Warranty | 12 months against manufacturing defects |
Build to Order
Specify the required rated voltage and resistance range when ordering. Other ranges manufactured to specific requirement.
Voltage & Resistance Range — Ordering Combinations
| Rated Voltage | Resistance Range |
|---|---|
| 500 V | 0–1000 MΩ |
| 1000 V | 0–2000 MΩ |
| 2500 V | 0–5000 MΩ |
| 2500 V | 0–10000 MΩ |
| 2500 V | 0–20000 MΩ |
| 5000 V | 0–5000 MΩ |
| 5000 V | 0–10000 MΩ |
| 5000 V | 0–20000 MΩ |
| 5000 V | 50–50000 MΩ |
| 5000 V | 100–100000 MΩ |
| 10000 V | 0–10000 MΩ |
| 10000 V | 0–20000 MΩ |
| 10000 V | 50–50000 MΩ |
| 10000 V | 100–100000 MΩ |
Specify the required rated voltage and resistance range when ordering. Other ranges manufactured to specific requirement.
Additional Options
- Rexine carrying case — at extra cost
- 15-minute timer facility — at extra cost
- H.V. testing leads, 2m (general or special) — per catalogue; see note
- Dual voltage & dual insulation range option — at extra cost
- Single voltage, dual insulation range option — at extra cost
- Timer (+₹3,800) — at extra cost per price list
- Any other range — on request
What's Included
- Mains cord, 2 metres
- One pair of H.V. testing leads (per price list — note conflict with catalogue; confirm with factory)
Key Applications
- Field insulation testing where mains supply is uncertain or unavailable
- Sustained PI and dielectric absorption testing (motor-driven mode)
- Remote substation and railway traction equipment commissioning
- HV transformer and cable insulation assessment
12-Month Warranty · Direct After-Sales Support
Every CIE® instrument carries a 12-month warranty against manufacturing defects. After-sales support is handled directly by CIE — not a distributor network. Non-standard ranges or custom specifications can be manufactured to your requirement.
Interested in the CIE/777 HM? Get a quote by email.
Email us with your model, quantity, and specification — we respond within one business day.