Transformer Technologies 140-501 Current Transformer

Description:

The Transformer Technologies 140-501 current transformer is an instrument current transformer used in electrical power distribution and monitoring systems to reduce high primary current to a standardized secondary current for metering and protective relaying. Commonly installed in switchgear, motor control centers, power distribution panels, substations, and industrial electrical systems requiring accurate current measurement and circuit protection. Maintenance teams and system integrators use this current transformer for equipment replacement, electrical system upgrades, and preventive maintenance to ensure reliable power monitoring and protection.

Applications:

The Transformer Technologies 140-501 current transformer is designed to provide an isolated 500:5 current ratio for metering and protective relays while maintaining electrical isolation from high-current circuits. It is widely used in industrial power distribution systems, utility substations, manufacturing facilities, commercial electrical installations, and energy monitoring applications where accurate current measurement and protective relaying are essential.

Technical Specifications:

• Manufacturer Part Number (MPN): 140-501
• Manufacturer: Transformer Technologies / Instrument Transformers Inc.
• Product Type: Current Transformer
• Current Ratio: 500:5 A
• Frequency: 50–400 Hz
• Maximum System Voltage: 600 V
• Basic Insulation Level (BIL): 10 kV
• Relay Class: C20
• ANSI Metering Class: 0.3B0.1 to 1.2B1.8
• Continuous Thermal Rating Factor: 2.0 @ 30°C, 2.0 @ 55°C
• Window Diameter: 8.13 in (206.5 mm)
• Mounting Type: Window-Type Current Transformer
• Approximate Weight: 20.6 lb (9.34 kg)
• Function: Current Measurement and Protective Relaying
• Compatible Components: Power Meters, Protective Relays, Switchgear, and Electrical Distribution Panels
• Application Environment: Industrial Power Distribution, Utility Substations, and Commercial Electrical Systems

Common Replacements:

• ABB 500:5 Window Current Transformer
• GE Grid Solutions Model 140-501 Current Transformer
• Eaton 500:5 Current Transformer