Insulation Testers · Motor-Operated
Mains-motor-driven insulation tester for sustained PI and dielectric absorption testing. Available in single-range configurations at 500, 1000, 2500, 5000 and 10,000 V.
Catalogue for your configuration
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CIE® Guarantee
The CIE/777 is a universal, multi-purpose insulation tester for checking insulation and conductance under simulated operating conditions in high-tension electrical and electronic applications. Driven by a mains motor (230 V AC, 50 Hz), the CIE/777 applies test voltage continuously for as long as needed - enabling genuine polarization index (PI) and dielectric absorption testing that hand-cranked instruments cannot sustain. PI is calculated as resistance after 10 minutes ÷ resistance after 1 minute; better results are obtained with longer periods. Housed in a seasoned wooden cabinet with sunmica finish (detachable lid, handle, lock). Guard ring around the line terminal and guard terminal eliminate surface-leakage errors. Externally accessible infinity adjuster provided. Conforms to IS: 2992-1987.
| Specification | Value |
|---|---|
| Drive | Mains motor, 230 V, 50 Hz A.C. |
| Body | Seasoned wooden cabinet with sunmica finish, detachable lid, handle, lock |
| Scale Length | 100 mm (approx.) |
| Accuracy | As per IS: 2992-1987 |
| High Voltage Test | Min. 2 kV or (rated voltage + 1) kV A.C. (r.m.s.), 1 min |
| Insulation Resistance Test | Better than 50 MΩ at 500 V D.C. |
| Guard Terminal & Infinity Adjuster | Guard ring and guard terminal eliminate surface-leakage errors; externally accessible infinity adjuster provided |
| Dimensions (incl. top cover, approx.) | 14 × 10 × 10 inch |
| Weight (incl. top cover) | 9 kg (approx.) |
| Response Time | 3 seconds |
| Range Configuration | Multiple range options available - specify at order |
| Warranty | 12 months against manufacturing defects only |
Custom ranges and configurations can also be built against specific requirements.
Additional Options
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.
CIE/777 HM
Motor-cum-hand driven insulation tester - mains motor for PI testing, hand-crank backup for field use. Available in single-range configurations at 500, 1000, 2500, 5000 and 10,000 V.
CIE/444
Hand-cranked analog insulation tester in anti-magnetic aluminium body - no batteries required. Available in single-range configurations at 100, 250, 500, 1000, 2500 and 5000 V.
CIE/666
Hand-cranked analog insulation tester in seasoned wooden body - available in single-range configurations at 100, 250, 500, 1000, 2500, 5000 and 10,000 V. More rated voltages than the metal-body CIE/444.
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