Oil-Minimum Current Transformers (36–800kV)

Property Specification

Type: High-Voltage Oil-Minimum Tank-Type Current Transformer (36 kV to 800 kV)

Features: Built around a bottom-tank hairpin construction, these low-oil-volume instrument transformers offer modular customization tailored to specific project needs across voltage ratings from 36 kV up to 800 kV. Available with either classic porcelain or composite silicone rubber insulation housings, the product line permits mix-and-match configurations of tank dimensions, oil expansion systems, and primary winding designs.

Applications: Precision revenue metering and billing, protective relaying schemes for substation protection, and power flow monitoring, telemetry, and control systems in high-voltage grids.

Description

Key Technical Performance Specifications

Technical Parameter / Specification Unit Specification Rating / Capability
Deployment / Environment Outdoor
Structural Architecture / Construction Tank (Hairpin) Configuration
Dielectric Insulation Medium Oil-impregnated Paper with Quartz Sand
Rated Maximum System Voltage kV 36 – 800
Maximum Primary Current Capacity A Up to 4000
Short-Circuit Thermal Current Rating kA / 1 s Up to 63
External Insulator Material Porcelain (Silicone Rubber available upon request)
Specific Creepage Clearance mm/kV ≥25(Extended distances available upon request)
Operating Ambient Temperature Limits °C -40 to +40
Standard Installation Altitude m ≤1000 (Customized elevations available upon request)