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Featured CIE/444
Insulation Tester — Metal Body, Hand-Driven
Hand-cranked analog insulation tester in anti-magnetic aluminium body — no batteries required. 100 V to 5000 V.
— Industries · Applications
Power Utilities
Power utilities require insulation testing on HV cables, transformers, and switchgear at commissioning and during periodic maintenance. Earth resistance testing is mandatory at every substation. Transformer oil quality (BDV) testing is performed before energisation and at routine maintenance intervals. Protection relay testing is essential for grid security.
PGCIL, WBSETCL, NTPC, State Electricity Boards
Instruments Used in Power Utilities
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Featured CIE/666
Insulation Tester — Wooden Body, Hand-Driven
Hand-cranked analog insulation tester in seasoned wooden body — up to 10,000 V. Wider range than metal-body CIE/444.
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CIE/777
Motorised Insulation Tester
Mains-motor-driven insulation tester for sustained PI and dielectric absorption testing. 500 V to 10,000 V.
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Featured CIE/222M
Analog Earth Tester — Metal Body
Hand-driven analog earth tester — 3-terminal (earth resistance) and 4-terminal (earth resistance + soil resistivity). ±5% accuracy per IS: 9223/1979.
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CIE/7050
Transformer Oil BDV Tester — 50 kV
Transformer oil dielectric strength (BDV) tester up to 50 kV. Manual and motorised variants.
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RTS-33
Three-Phase Relay Test Set
Three-phase, two-unit relay test set — 0–360° phase angle, 0–50 A current, 415 V 3-phase input. For distance, directional, and differential relay testing.
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Featured DIT-2500
Digital Insulation Tester + Multimeter — up to 2500 V
Combined digital insulation tester (100 V–2500 V, 50 GΩ) and True-RMS multimeter with DAR, PI, capacitance, and diode test. CAT III 1000 V / CAT IV 600 V.
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DIT-5000
Digital Insulation Tester — up to 5000 V / 200 GΩ
Auto-ranging digital insulation tester to 5000 V with HV LED indicator, auto zero calibration, and large-character LCD. 6 × AA batteries.
Why These Instruments
CIE/444
Electrical maintenance of rotating plant equipment and stationary apparatus
CIE/666
Electrical maintenance of rotating plant equipment and stationary apparatus
CIE/777
Sustained insulation and polarization index (PI) testing on large rotating plant
CIE/222M
Earth resistance measurement for power circuits and lightning protection systems
CIE/7050
Transformer oil dielectric strength testing before energisation
RTS-33
Distance relay commissioning
Tell us your power utilities requirement — we'll recommend the right instrument.
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