Bar Primary Current Transformer

Bar Primary

Designed for high-accuracy current measurement in medium-voltage indoor systems, the Bar Primary CT offers superior short-circuit withstand capacity and compact installation, making it ideal for demanding electrical environments.

Bar Primary

Overview

The BCT Series Bar Primary Current Transformers are engineered for reliability, precision, and durability in indoor applications. With a wide range of primary current ratings and robust insulation levels, these transformers are suitable for switchgear, control panels, and protection systems where performance and safety are critical.

Key Features

Bar Primary Construction

Ensures precise current measurement and robust performance.

Wide Primary Current Range

Supports 100 A to 3150 A, meeting various system requirements.

High Short-Time and Dynamic Current Withstand

Handles up to 400 × Ip or max. 100 kA for fault conditions.

Compact Design

Fits within panel widths of 650 mm to 800 mm for space-constrained installations.

Applications

Medium Voltage Indoor Systems: Ideal for accurate current measurement and protection.

High Short-Circuit Environments: Suitable for systems requiring high dynamic and short-time current withstand.

Industrial & Utility Switchgear: Perfect for integration into control panels and protection circuits.

Technical Specifications

Parameter	BCT 11A	BCT 11B
Construction Type	Bar Primary	Bar Primary
Max. System Voltage (Um)	12 kV	12 kV
Basic Insulation Level (BIL)	Up to 35/75 kV	Up to 35/75 kV
Rated Primary Current (Ip)	100 to 3150 A	100 to 3150 A
Rated Secondary Current	1 A or 5 A	1 A or 5 A
Rated Short-Time Current (Ith)	Up to 400 × Ip or max. 40 kA	Up to 400 × Ip or max. 40 kA
Rated Dynamic Peak Current (Idyn)	2.5 × Ith	2.5 × Ith
Suitable Panel Width	650 mm to 800 mm	650 mm to 800 mm