Current transformer HL series

The HL Standard Current Transformer is a calibration standard designed for verification and error testing of current transformers. It consists of a primary winding and a secondary winding and supports self‑calibration at 5/5 or 1/1 current ratios for reliable ratio checks.

Features

• Primary and secondary winding construction for calibration reference.
• Verification according to the standard current ratio indicated on the nameplate.
• Self‑calibration capability at 5/5 or 1/1 current ratios.
• Equipped with casters for easy handling and transport.

Operating conditions

• Operating temperature: -5℃ to +40℃.
• Relative humidity: < 80% (non‑condensing).
• Workplace should be free of strong external electromagnetic fields unrelated to the test.
• Designed to allow long‑term operation at rated current.

Dimensions and weight (by model)

• HL-22/23: 370 × 170 × 440 mm — weight: 13 kg.
• HL-32/33: 330 × 190 × 430 mm.
• HL-53/62/63 (HL-62C/63C): 470 × 230 × 570 mm.

Handling and available documentation

• Fitted with casters for mobility and field use.
• Documentation: user manual and calibration certificate available (PDF on request).
• Related demonstration videos available for setup and field application.

Technical specifications

• Model family: HL Standard Current Transformer.
• Function: calibration standard for current transformer verification and error testing.
• Construction: primary and secondary windings.
• Calibration ratios: self‑calibratable at 5/5 or 1/1.
• Environmental limits: -5℃ to +40℃, humidity < 80%.
• Mobility: caster‑mounted for handling.
• Dimensions and weight vary by model (see block above).