Three-Phase Through-Type Current Isolating Transformer (ICT) — 100 A Version

TaglineHigh-Accuracy, Wide-Range Current Isolation for Energy Meter Testing

Overview

For testing three-phase energy meters where voltage and current circuits cannot be separated (closed links), current isolation is essential to ensure accuracy. In multi-position test benches and complex three-phase setups, voltage isolation alone is insufficient. The 100 A ICT provides true 1:1 current isolation with electronic error compensation, enabling precise, safe, and flexible calibration under equipotential conditions.

Each ICT integrates three independent 1:1 current transformers, supporting:

• Three-phase meters with non-separated voltage/current circuits

• Single-phase meters under non-separated conditions

• Multi-station benches where each meter position receives an independent isolated current

To maintain high accuracy across meter types and burdens, the ICT uses an internal electronic error compensator and provides ample secondary output capacity. At 100 A, the secondary can deliver ≥60 VA while keeping accuracy. Secondary open-circuit/overload conditions are monitored with indication and automatic short-circuit protection.

Key Features

• Wide range: 0.1–100 A primary / 0.1–100 A secondary (1:1)

• Single-turn through-type, energy-efficient, low loss

• High output capacity: up to 70 VA at 100 A

• Unique electronic compensation ensures 0.01% class accuracy over wide range

• Secondary open-circuit and overload indication, alarm, and automatic short-circuit protection

• External status indicators and control buttons for easy operation

• Supports multi-ICT series primary connection with isolated secondaries per meter position

Typical Applications

• Three-phase and single-phase energy meter calibration (closed-link meters)

• Multi-position meter test benches using equipotential method

• Utilities, metrology labs, and manufacturers requiring high-accuracy current isolation

Technical Specifications

Safety & Protection

• Secondary open-circuit/overload detection with visual indication and alarm

• Automatic secondary short-circuit to protect devices and maintain stability

• High insulation strength between primary, secondary, and enclosure

Ordering Information

• Model: Three-Phase Through-Type Current Isolating Transformer (1:1, 0.1–100 A)

• Accessories: AC 12–0–12 power cables, 7-pin I/O plug, quick-start guide

Notes

• Accuracy applies within specified burden and environmental conditions.