Use

This series of open current transformers is suitable for current measurement and microcomputer protection of power supply equipment in 0.66kV and rated frequency of 50Hz or 60Hz lines.

Structure introduction

This product uses high-quality silicon steel sheets with high magnetic permeability as magnetic permeability material, which has the characteristics of separable iron core and small magnetic circuit loss. Its semicircular annular iron core and secondary winding are poured into the plastic shell with high-quality epoxy resin, which is moisture-proof, stable in performance and no maintenance required.

The primary insulation of this product is protected by cables.

Main technical parameters

1. Product implementation standard: GB/T20840.2

2. Equipment type: outdoor

3. Rated working voltage: AC 0.66kV

4. Rated frequency: 50Hz

5. Power frequency withstand voltage: 3kV/1min;

6. Load power factor: cosØ=0.8 (hysteresis)

7. The product allows long-term operation at 120% rated current

8. Accuracy level and load

External dimensions

1. Transformer size d: 55  mm; D: 110  mm; L: 52 mm.

2. Lead model: National standard RVV2×1.5mm2

Instructions for use

1. The conditions for use must comply with the requirements of the nameplate;

2. Environmental conditions:

The altitude shall not exceed 4000 meters;

Ambient temperature: -25℃~+55℃;

Humidity and heat RH ≤95% (daily average);

There is no pollution, corrosive and explosive media in the atmosphere that seriously affects the insulation performance of the transformer.

3. The grounding terminal must be reliable grounding;

4. It is strictly forbidden to open the circuit twice during operation;

5. Keep the end face of the core cutout clean and tidy during use.

Ordering instructions

1. Rated current ratio;

2. Accuracy level and load;

3. Lead length; 

4. Other special requirements.