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Product Detailed Parameters
- Description：TAPE WOUND CT WITH 1000/5A
- Series：TWCT
- Mfr：Selec Controls USA Inc.
- Package：Box
- Frequency Range：50Hz ~ 60Hz
- Type：Non-Invasive (Solid Core)
- Inductance：-
- ET (Volt-Time)：-
- Current Ratio：1000:05:00
- DC Resistance (DCR)：-
- Ratings：-
- Mounting Type：Free Hanging (In-Line)
- Size / Dimension：6.496" L x 6.102" W (165.00mm x 155.00mm)
- Height - Seated (Max)：0.984" (25.00mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Current Rating (Amps)：-
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Overview
The TWCT-T-D120 is a tape wound current transformer manufactured by Selec Controls USA Inc., designed for AC electrical systems operating at 50Hz or 60Hz. It features a primary rated current of 1000A and a secondary output of 5A, providing a transformation ratio of 1000/5. The device supports a rated burden of 10VA with an accuracy class of 0.5. Its inner diameter measures 120mm, accommodating busbars or cables within this dimension. The unit utilizes free hanging in-line mounting and has physical dimensions of 165.00mm x 155.00mm.
Feature Summary
- Tape wound construction for reliable current sensing
- Terminal output configuration
- Free hanging in-line mounting style
Applications
- Current sensing in AC electrical systems
- Metering applications requiring Class 0.5 accuracy
- Protection circuits utilizing 1000/5A transformation
Procurement Notes
Verify the specific ordering suffix matches the required inner diameter (D120), burden (VA 10), and accuracy class (CL 0.5). Confirm that the primary rating of 1000A aligns with system requirements. Ensure the application environment is compatible with the thermal nominal continuous rating of 120% of In. Cross-reference the IEC 61869-2 standard compliance if mandated by project specifications.
Selection Notes
Select this model when a 1000A primary current rating and 120mm inner diameter are necessary. The 10VA burden capacity suits moderate load conditions. Class 0.5 accuracy is appropriate for precision metering rather than general protection. Consider the free-hanging form factor for installation constraints where space allows for inline placement without bracketing.
Part Context
This component belongs to the TWCT series of tape wound current transformers from Selec. The series offers various primary ratings from 30A to 1600A and multiple inner diameters including 35mm, 55mm, 65mm, 110mm, and 120mm. Accuracy classes range from 0.5 to 5, allowing selection based on measurement precision needs.
Replacement Considerations
The TWCT-T-D110 shares similar technical characteristics but features a 110mm inner diameter instead of 120mm. Verify dimensional compatibility before substitution. Other models in the TWCT series may offer different primary ratings or burden capacities.
