The Ring Type CT – B7-200056OA110S2 Current Transformer is a high-precision electrical device engineered for accurate current measurement and reliable protection in industrial and commercial power systems. Designed with advanced magnetic core technology and premium insulation materials, this CT ensures consistent performance, high durability, and long operational life even under demanding electrical conditions.
As part of the robust B7 series, this model is specifically developed for heavy-duty busbar and large cable applications, featuring a 200 mm inner diameter. Its ring-type (window type) construction allows for quick and easy installation without disconnecting the primary conductor, significantly reducing installation time and minimizing operational downtime.
The B7-200056OA110S2 efficiently converts high primary current into a standardized secondary output (typically 5A or 1A), ensuring compatibility with energy meters, ammeters, and protection relays. Engineered for high accuracy and low phase displacement, this current transformer provides precise readings essential for energy billing, monitoring, and protection applications.
Manufactured using a high permeability silicon steel core, the CT minimizes energy losses while maintaining excellent linearity across varying load conditions. The outer housing is made from flame-retardant thermoplastic, offering superior resistance against heat, dust, and mechanical stress, making it highly suitable for harsh industrial environments.
This current transformer is designed in accordance with IS / IEC 61869-2 standards, ensuring safety, reliability, and consistent performance. It is widely used by electrical engineers, OEMs, and panel builders in modern power distribution systems.
Model Number: B7-200056OA110S2
Product Type: Ring Type Current Transformer
Rated Primary Current: 200A (typical, configurable)
Secondary Current: 5A / 1A
Accuracy Class: Class 1.0 / Class 0.5
Rated Burden: 10 VA / 15 VA
Frequency: 50/60 Hz
System Voltage: Up to 0.72 kV
Insulation Class: Class E / B
Short-Time Thermal Current (Ith): 20 × In for 1 second
Dynamic Current (Idyn): 2.5 × Ith
Core Material: High-grade silicon steel
Mounting Type: Busbar / Cable (Ring Type)
Inner Diameter (ID): 200 mm
Operating Temperature Range: -10°C to +55°C
Storage Temperature Range: -20°C to +70°C
Housing Material: Flame-retardant thermoplastic
Standards Compliance: IS / IEC 61869-2
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