Outdoor Weatherproof Current Transformer (Up to 24kV )

Property Specification

Type: Medium-Voltage Outdoor Weather-Resistant Current Transformer (Up to 24 kV)

Features: Encapsulated in Hydrophobic Cycloaliphatic Epoxy resin (HCEP) to deliver ground insulation, mechanical stability, and high resistance against electric arcing, UV exposure, and ozone. Engineered for harsh environmental conditions  with an extended creepage distance of 780 mm. Designed for maximum network operating voltages up to 24 kV with a single-winding/single-secondary construction for metering, protection, or specialized monitoring applications. Rated for ambient operating temperatures from -40°C to +40°C and installations up to 1,000 meters above sea level.

Applications: Outdoor distribution networks, pole-mounted metering and relay protection assemblies, outdoor switchgear installations, sub-station feeder monitoring, and harsh-environment utility infrastructure exposed to heavy moisture or airborne contamination.

Description

Technical Product Range & Performance Matrix

Technical Parameter / Feature Category Outdoor Weather-Resistant Current Transformer Specifications
Rated & Maximum Voltage (Um) 24 kV Class (Rated Insulation Level: 24 kV)
Power-Frequency Withstand Test Voltage (1 min) 50 kV
Lightning Impulse Withstand Test Voltage (1.2/50 µs) 125 kV
Rated Primary Current Range (Ipn) 150 A, 200 A, 250 A, 300 A, 400 A, 600 A (other primary currents available upon agreement)
Rated Secondary Current (Isn) 0.1 A, 1 A
Rated Burdens & Accuracy Classes

Burden: 0.9 VA to 5 VA (maximum burden depends on parameters)

Accuracy Classes: 0.5, 0.5/10P20, 5P10, 10P10, 1FS10, 0.5FS5

Short-Time Thermal (Ith) & Dynamic (Idyn) Currents

Thermal Current (Ith, 1s): 16 kA to 30 kA

Dynamic Current (Idyn): 40 kA to 75 kA

Continuous Rating & Extended Currents 105% to 160% of rated primary current
Operational & Environmental Parameters

Rated Frequency (fn): 50 Hz, 60 Hz

Insulation Class: Class E

Creepage Distance: 780 mm