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
Dual-scale multi-voltage motorised insulation testers. MR-A through MR-E series with inner/outer scale display for multiple test voltage and range combinations.
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CIE/777/MR
Dual-scale motorised insulation tester - inner and outer scale readings cover two ranges per voltage. Series MR-A to MR-E.
CIE/777 HM/MR
Dual-scale motor-cum-hand driven insulation tester - inner/outer scale, mains motor plus hand-crank backup. Series MR-A to MR-E.
Insulation resistance testing is the single most important test you can run on any electrical installation. Learn the test voltages, procedures, and how to read the results.
How-ToA megger tests the one thing a regular multimeter can't - whether your cable or motor insulation will survive operating voltage without breaking down.
GuidesA fixed-voltage tester does one job reliably. A multirange tester covers a whole voltage span from one instrument - here's when that flexibility actually pays off.
GuidesA megger reading of 80 MΩ one day and 30 MΩ the next isn't necessarily a winding going bad - it might just be a colder motor versus a hot one.
CIE multirange motorised insulation testers combine the sustained output capability of a mains-driven motor with the flexibility of selectable test voltage and resistance range. The dual-scale indicator displays two resistance ranges simultaneously via inner and outer scales, allowing the operator to read the correct value for the selected range combination without changing the indicator. This is particularly useful in commissioning environments where multiple items of equipment must be tested at different voltages.
The CIE/777/MR and CIE/777 HM/MR series cover the full range of industrial insulation testing requirements at 500, 1000, 2500, 5000 and 10,000 V, and are available in MR-A through MR-E configurations. They are used by protection engineers, commissioning teams, and maintenance departments at power utilities, railways, and heavy industry across India.
CIE supplies multirange motorised insulation testers to customers throughout India - Eastern India (Kolkata, Howrah, Bhubaneswar, Odisha, West Bengal, Bihar, Jharkhand), Northern India (Delhi, Lucknow, Chandigarh), Western India (Mumbai, Pune, Ahmedabad, Surat), and Southern India (Bangalore, Chennai, Hyderabad, Kochi).
Cambridge Instruments & Engg. Co. (CIE) - manufacturer of precision electrical test and measurement instruments in Howrah, West Bengal, India, established 1963. Pan-India supply: Kolkata · Howrah · Bhubaneswar · Cuttack · Bangalore · Chennai · Hyderabad · Mumbai · Pune · Delhi · Ahmedabad · Lucknow · Chandigarh · Ranchi · Raipur · Visakhapatnam · Nagpur.
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