3VTN460-277 | Crompton 3-Phase Voltage Transformer 2.31:1 Turns Ratio

Crompton · HMIs & Displays

Description  The Crompton 3VTN460-277 is a three-phase voltage transformer engineered for precise line-to-neutral voltage reduction in power monitoring and protection systems. With a 2.31:1 turns ratio and a standard 277 V to 120 V output, it delivers accurate and stable voltage transformation for metering and instrumentation applications. Built for durability, it maintains performance across demanding electrical environments.     Technical Specifications Condition New/Never Used Surplus Brand Crompton Category Transformers Part Number 3VTN460-277 Subcategory 3-Phase Voltage Transformer Frequency 60 Hz Line-to-Neutral Voltage Rating 277:120 V Turns Ratio 2.31:1 Accuracy Class (per phase) 0.6 W, 1.2 X at 60 Hz Insulation Level 600 V, 10 kV BIL full wave Thermal Rating (per phase) 150 VA at 30°C; 100 VA at 55°C Primary Fuse (Recommended) 2.0 A Secondary Protection (Recommended) 1.6 A BBS type fuse Construction Resin-encapsulated core and coil in thermoplastic housing Terminals No. 6-32 screw terminals with washers Design Three transformers in one case Mounting Panel/industrial installation Application Voltage metering, protective relaying, monitoring       Information About 3VTN460-277 The 3VTN460-277 belongs to Crompton’s family of three-phase potential transformers, designed as an integrated assembly containing three matched transformer elements within a single enclosure. It is insulated to a 600-volt, 10 kV BIL rating and features resin-encapsulated coils inside a thermoplastic case for enhanced mechanical and environmental protection. Primary and secondary terminations use No. 6-32 screw connections with lockwashers and flat washers, allowing secure panel installation. Typical applications include voltage metering, monitoring, and protective relay circuits requiring accurate line-to-neutral voltage transformation in 277/480-volt systems. Key Features: Three-phase transformer assembly: Integrates three voltage transformers in one enclosure. 2.31:1 turns ratio: Converts 277 V line-to-neutral to 120 V secondary. High insulation rating: 600 V insulation level with 10 kV BIL. Resin-filled thermoplastic case: Provides robust protection for core and coil assemblies. Accurate metering performance: 0.6 W / 1.2 X accuracy class at 60 Hz. Standard screw terminals: No. 6-32 terminals with washers for secure electrical connections. Thermal rating per phase: 150 VA at 30°C ambient / 100 VA at 55°C ambient. Designed for line-to-neutral operation: Suitable for grounded 3-phase systems. The 3VTN460-277 delivers the reliability and precision required for voltage metering and monitoring in electrical distribution systems.

Brand: Crompton · Category: HMIs & Displays

Key features

• Three-phase transformer assembly: Integrates three voltage transformers in one enclosure.
• 2.31:1 turns ratio: Converts 277 V line-to-neutral to 120 V secondary.
• High insulation rating: 600 V insulation level with 10 kV BIL.
• Resin-filled thermoplastic case: Provides robust protection for core and coil assemblies.
• Accurate metering performance: 0.6 W / 1.2 X accuracy class at 60 Hz.
• Standard screw terminals: No. 6-32 terminals with washers for secure electrical connections.
• Thermal rating per phase: 150 VA at 30°C ambient / 100 VA at 55°C ambient.
• Designed for line-to-neutral operation: Suitable for grounded 3-phase systems.

Specifications

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