Current Transformer 200/5A ESS

ESS 200/5 A current transformer

⚡ The ESS 200/5 A is a measuring current transformer designed to connect electricity meters, ammeters and monitoring equipment to circuits carrying currents up to 200 A.

It converts the primary current into a standard 5 A secondary measuring current.

🔢 Meaning of 200/5 A

• 200 A — rated primary current;
• 5 A — rated secondary current;
• transformation ratio — 40:1.

Meter readings must be multiplied by 40 when this ratio is not programmed into the meter or AMR system.

🎯 Accuracy

Current transformers rated 200/5 A commonly use accuracy class 0.5 and a 5 VA burden. Confirm the exact values from the ESS product marking.

🏭 Applications

• electricity meters with 5 A inputs;
• electrical switchboards;
• industrial facilities;
• retail and warehouse installations;
• AMR systems;
• ammeters and measuring relays;
• commercial and technical metering.

🔌 Three-phase metering

A three-phase installation normally requires three identical 200/5 A current transformers, one for each phase.

🛡️ Critical safety rule

Never open the S1–S2 secondary circuit while primary current is flowing.

Before disconnecting the meter, the secondary circuit must be short-circuited through an appropriate test terminal block.

✅ Key advantages

• converts 200 A to a standard 5 A output;
• 40:1 transformation ratio;
• compatible with electricity meters rated for 5 A;
• suitable for three-phase metering;
• no separate power supply required;
• can be integrated into AMR systems;
• ESS Electrical Solutions brand.

⚠️ Important: confirm the accuracy class, VA burden, aperture size and mounting configuration from the actual stocked ESS unit.