Megger CTER-91 Current Transformer Test Set

Megger CTER-91 Current Transformer Test Set

The Megger CTER-91 is a current-transformer (CT) test set that lets you test CTs in circuit breakers or switchgear without moving bushings and CTs. Using the voltage-comparison method, the CTER-91 provides a variable-voltage output of up to 1000 V together with precision instrumentation for testing single- and multi-ratio CTs. In a single connection it performs excitation/saturation, ratio and polarity tests, making it an efficient tool for utilities and maintenance teams verifying CT condition and performance.

Key features of the Megger CTER-91

• Three tests, one connection – excitation/saturation, ratio and polarity tests without reconnecting leads.
• Variable output to 1000 V – four ranges (0–40, 0–150, 0–600, 0–1000 V; up to 1.0 A at the highest range).
• Single- and multi-ratio CTs – suited to a wide range of protection and metering current transformers.
• Precision instrumentation – voltmeter ±0.25% and ammeter ±0.85% of reading.
• In-situ testing – test CTs in breakers and switchgear without disturbing bushings.
• Portable – 16.8 kg in a moulded suitcase-type enclosure; 120/240 V input.

Megger CTER-91 applications

• Ratio, polarity and excitation/saturation testing of current transformers.
• CT verification in circuit breakers and switchgear without removing bushings.
• Protection and metering CT commissioning and maintenance.

What’s in the box – Megger CTER-91

• Megger CTER-91 current transformer test set
• Test leads and connections
• Carrying case and documentation

Specify 120 V or 240 V model when ordering; exact leads/accessories vary — confirm with MME.

Why buy the Megger CTER-91 from MME in UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) supplies genuine Megger transformer and CT test equipment across the UAE and the GCC, with application support and after-sales service. Contact MME for pricing and availability of the CTER-91.