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CIE/777/MR
Multirange Motorised Insulation Tester
Dual-scale motorised insulation tester - inner and outer scale readings cover two ranges per voltage. Series MR-A to MR-E.
Insulation Testers · Multirange Motorised
CIE/777 HM/MR Multirange Motor-cum-Hand Driven Insulation Tester
Dual-scale motor-cum-hand driven insulation tester - inner/outer scale, mains motor plus hand-crank backup. Series MR-A to MR-E.
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Technical Catalogue (PDF)
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Catalogue for your configuration
Select your series.
Download selected (PDF)Need a range not listed? Use Request a Quote below - custom ranges can be built.
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/MR combines the dual-scale (inner/outer) multirange capability of the CIE/777/MR with the motor-and-hand dual-drive of the CIE/777 HM. All five MR series (MR-A to MR-E) are available in this configuration. The motor-driven mode enables sustained PI and dielectric absorption testing; the hand-crank backup allows operation where mains power is unavailable. Physical specifications (weight, dimensions) vary by series - contact us to confirm for the specific MR/HM variant required.
Technical Specifications
| Specification | Value |
|---|---|
| Drive | Mains motor (230 V, 50 Hz) plus collapsible hand-crank backup |
| Series Available | MR-A to MR-E |
| Display | Dual-scale inner/outer (MR-A, MR-B, MR-D) or single-scale (MR-C, MR-E) |
| Note on Specs | Varies by series - contact us to confirm |
| Warranty | 12 months against manufacturing defects only |
Available Series - Voltage, Inner Scale & Outer Scale
| Series | Voltage | Inner Scale | Outer Scale |
|---|---|---|---|
| MR-A | 5000 V | 0–5000 MΩ | 50–100000 MΩ |
| 2500 V | 0–2500 MΩ | 25–50000 MΩ | |
| 1000 V | 0–1000 MΩ | 10–20000 MΩ | |
| MR-B | 5000 V | 0–2000 MΩ | 10–10000 MΩ |
| 2500 V | 0–1000 MΩ | 5–5000 MΩ | |
| 1000 V | 0–500 MΩ | 2–2000 MΩ | |
| MR-C | 5000 V | 100–100000 MΩ | - |
| 2500 V | 50–50000 MΩ | - | |
| MR-D | 5000 V | 0–5000 MΩ | 50–100000 MΩ |
| 2500 V | 0–2500 MΩ | 25–50000 MΩ | |
| MR-E | 5000 V | 50–50000 MΩ | - |
| 2500 V | 25–25000 MΩ | - | |
| 1000 V | 10–10000 MΩ | - |
Dual-scale analogue display - inner and outer resistance scales on same movement.
Any configuration apart from the standard MR series shown above can be built to order.
Additional Options
- Carrying case - at extra cost
- Testing leads, 1m - at extra cost
- H.V. testing leads, 2m - general / special - at extra cost
- Timer - at extra cost
- Any other range - on request
Key Applications
- Remote field testing with backup hand drive - dual-scale multirange coverage
- Multi-voltage HV commissioning and PI testing
- EPC contractors and utilities needing both motor and hand-drive flexibility
12-Month Warranty · Direct After-Sales Support
Every CIE® instrument carries a 12-month warranty against manufacturing defects only. After-sales support is handled directly by CIE - not a distributor network. Non-standard ranges or custom specifications can be manufactured to your requirement.
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Interested in the CIE/777 HM/MR? Get a quote by email.
Email us with your model, quantity, and specification - we respond within one business day.