Core Balanced Current Transformer to be used with Earth Leakage Protector Relay (ELRP/S)

The CBT-94F series of core balanced current transformers are exclusively for use with our ELRP/S earth leakage protection relay. The extremely sensitive toroidal core and secondary winding are encapsulated by a self-extinguishing case providing excellent mechanical strength, protection from damage and electrical insulation. Leakage measurement range covers 0-10 amps.

Operation

Primary conductors are grouped together and fed through the transformer aperture. All conductors must pass through the device in the same direction. The current transformers sum the currents flowing into and back from the load. Ideally, the load will have no leakage current, so current flow through the current transformer will completely cancel out. The equipment grounding conductor must always bypass the current transformer. The connections between the current transformer and protector should be kept as short as possible to minimise signal noise. For best results, use screened cable with the screen grounded at the protector.

Features

• Leakage measurement range 0-10 amps
• 6 models available
• Integral wire sealable terminal cover
• Flame retardant high impact moulded case

Benefits

• Reduction of high currents for ease of metering
• Wide operating temperature –10°C to +50°C
• Steel mounting feet supplied
• Long product life

Click the PDF below to read more about the Crompton Instruments Core Balanced Current Transformer to be used with Earth Leakage Relay (ELRP/S).