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Product Detailed Parameters
- Description：TAPE WOUND CT WITH 250/5A
- Series：TWCT
- Mfr：Selec Controls USA Inc.
- Package：Box
- Frequency Range：50Hz ~ 60Hz
- Type：Non-Invasive (Solid Core)
- Inductance：-
- ET (Volt-Time)：-
- Current Ratio：250:05:00
- DC Resistance (DCR)：-
- Ratings：-
- Mounting Type：Free Hanging (In-Line)
- Size / Dimension：3.937" L x 3.543" W (100.00mm x 90.00mm)
- Height - Seated (Max)：0.984" (25.00mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Current Rating (Amps)：-
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Overview
The Selec Controls USA Inc. TWCT-T-D55-250/5A-VA5-CL1 is a tape wound current transformer designed for 50Hz to 60Hz systems. It features a primary rated current of 250A and a secondary output of 5A, resulting in a current ratio of 50:1. The device has an inner diameter of 55mm and supports a rated burden of 5 VA. It adheres to the IEC 61869-2 standard with an accuracy class of 1. The unit utilizes terminal output and is constructed as a free-hanging in-line component.
Feature Summary
- Tape wound construction for reliable magnetic performance
- Terminal output configuration for secure electrical connections
- Free-hanging in-line design for flexible installation
Applications
- Electrical metering systems
- Power quality monitoring
- Industrial protection circuits
Procurement Notes
Verify that the required primary current matches the 250A specification exactly. Confirm the system frequency aligns with the 50Hz or 60Hz operational range. Ensure the connected burden does not exceed the 5 VA rating to maintain accuracy class 1 compliance. Check that the conductor size fits within the 55mm aperture. Validate that the terminal output type suits the existing wiring infrastructure.
Selection Notes
Select this model when a 250A primary current rating is necessary for accurate measurement. The 55mm aperture accommodates specific cable sizes without modification. The 5 VA burden capacity supports standard metering loads. The accuracy class 1 ensures precision for billing or monitoring applications. Consider the in-line form factor for space-constrained panels requiring direct conductor insertion.
Part Context
This component belongs to the TWCT-T series of tape wound current transformers from Selec Controls USA Inc. The series offers various primary current ratings ranging from 30A to 1600A while maintaining consistent physical dimensions and accuracy standards. The D55 designation indicates the 55mm inner diameter common across this product line.
Replacement Considerations
Direct substitutes include other Selec models with identical specifications such as the TWCT-T-D55-200/5A-VA5-CL1 or TWCT-T-D55-400/5A-VA5-CL1 if current ratings differ. Cross-manufacturer replacements must match the 55mm aperture, 50:1 ratio, and 5 VA burden constraints.
