Overview
The ABB 6353C88H11 SCV-1200 is a Type SCV indoor current transformer engineered for metering and relaying applications in low-voltage switchgear. With a 1200:5 ampere ratio, 600-volt rating, and 10 kV BIL insulation level, this transformer provides accurate current transformation for protection and measurement circuits. The unit is UL Recognized (File E96461) and suitable for 50-400 Hz operation, making it compliant with ANSI standards for industrial power systems.
Key Features
- 1200:5 ampere ratio — precise current reduction for standard 5A metering and relay circuits
- Ring-core construction — fully distributed secondary winding in protective polyester case rated for switchgear testing
- Mechanical rating 180× normal current — withstands transient overcurrents without saturation
- Thermal rating 80× rated current — one-second thermal capacity for fault tolerance
- 600V, 10 kV BIL indoor rating — suitable for pad-mount and metal-clad switchgear
- Frequency range 50-400 Hz — operates across industrial and variable-frequency applications
Technical Specifications
The SCV-1200 meets or exceeds IEEE metering accuracy standards and is engineered for integration into relaying and protection schemes. The fully distributed winding design minimizes harmonic distortion and ensures stable performance under fault conditions. Secondary terminal ratings accommodate standard burden values for both digital and analog measurement equipment.
Typical Applications
- Current measurement in medium-voltage switchgear (600V class)
- Protective relaying circuits requiring 5A secondary output
- Energy metering in industrial facilities and distribution panels
- Integration with digital power quality analyzers and protective relays
- Feeder and circuit protection schemes in substations
Compatibility & Replacements
The ABB 6353C88H11 is the OEM standard for the SCV-1200 configuration and is cross-referenced as a Westinghouse/Cutler Hammer part. Other ratios in the SCV series (75:5 through 4000:5) share the same 600V and 10 kV BIL ratings; consult application requirements for ratio substitutions. The SCV-D deep-case variant (6353C89H13) is available for higher-kV applications and extended metering installations but requires different mounting provisions. Ensure secondary burden and accuracy class compatibility when specifying replacements.
