Why Choose the ABB CT1M-8 1500 Current Transformer?
The ABB CT1M-8 1500 is a closed-core 1500/5 A current transformer designed for indirect measurement of electrical parameters in high-current low-voltage distribution systems. Supplied under ABB order code 2CSG280565R1000, it forms part of the ABB CT1M current transformer range and is designed in accordance with IEC 61869-2.
With a rated primary current of 1500 A and a rated secondary current of 5 A, the CT1M-8 1500 converts primary circuit current into a proportional standard secondary signal for compatible electricity meters, ammeters, power analysers and monitoring equipment. Its class 0.5 accuracy and 60 VA rated output at class 0.5 provide a high-capacity solution for demanding commercial and industrial metering installations.
The CT1M-8 1500 uses a through-primary design with a generous opening for large conductors. It accommodates cables up to 73 mm and horizontal or vertical busbars up to 80 × 30 mm or 60 × 50 mm. Its 155 × 140 × 45 mm enclosure, IP20 degree of protection and 50–60 Hz rated frequency make it suitable for switchboards, distribution panels and energy monitoring systems.
Key Advantages
- Reliable 1500/5 A current transformation for high-current indirect electrical measurement.
- Class 0.5 accuracy supports precise metering applications.
- High 60 VA rated output at accuracy class 0.5.
- 60 VA rated output across classes 0.5, 1 and 3.
- Standard 5 A secondary output for compatible measuring equipment.
- FS 5 current limiting factor for metering applications.
- Large through-primary opening accommodates cables up to 73 mm.
- Suitable for horizontal and vertical busbars up to 80 × 30 mm or 60 × 50 mm.
- Busbar and mounting-foot fixings are supplied as standard.
- Designed in accordance with IEC 61869-2 for current transformers.
Key Features
- ABB CT1M-8 closed-core current transformer.
- 1500 A rated primary current.
- 5 A rated secondary current.
- 1500/5 A transformation ratio.
- Class 0.5 measurement accuracy.
- 60 VA rated output at class 0.5.
- 60 VA rated output at class 1.
- 60 VA rated output at class 3.
- FS 5 current limiting factor.
- 50–60 Hz rated frequency.
- IP20 degree of protection.
- Through-primary construction for large cable and busbar installations.
Current transformers enable meters and monitoring instruments to measure circuits carrying currents substantially above their direct-input range. The ABB CT1M-8 1500 transforms a primary current of 1500 A into a proportional 5 A secondary current, allowing compatible equipment to perform indirect measurement of electrical network parameters.
The CT1M-8 1500 combines class 0.5 accuracy with a substantial 60 VA rated output and a large through-primary opening for cables and busbars. This combination makes it particularly suitable for high-current distribution boards, industrial switchgear and energy monitoring installations where a standard 5 A measuring signal and generous CT burden capacity are required.
Typical Applications
- High-current electrical energy metering systems.
- Main low-voltage distribution switchboards.
- Industrial power distribution panels.
- Power and network monitoring systems.
- Building energy management installations.
- Industrial electrical measurement systems.
- Panel-mounted ammeters and power analysers.
- Large cable and busbar current measurement applications.
