fault-tamer_HEROSHOTFault Tamer Fuse Limiter

S&C Fault Tamer combines the functionality of a conventional fuse cutout and a backup current-limiting fuse in one powerful, easy-to-install package for the protection of new or existing overhead pole-top transformers through 25 kV. Fault Tamer addresses the critical issues facing protection engineers today.
Fault Tamer is manufactured in accordance with a quality system certified to ISO9001:2000.

Features

Fault Tamer provides these features and benefits over traditional fuse cutouts, or cutouts used in combination with backup current-limiting fuses.

Improved Transformer Protection

  • Ideally suited for protecting single- or three-phase transformers through
    • 100 kVA single-phase at 15 kV
    • 167 kVA single-phase at 25 kV
  • Excellent continuous, hot-load pickup, and cold-load pickup capabilities.
  • High surge withstand capability. Allows arrester to be mounted on transformer tank without increasing the chance of nuisance operations due to lightning.

Energy Limitation

  • Minimizes equipment damage
    • Reduces chances of catastrophic transformer failure from internal high-current faults.
    • Minimizes bushing and tank damage due to external primary faults.
  • Improves service continuity
    • Provides complete coordination with upstream lateral fuses.
    • Provides complete coordination with substation instantaneous relay settings.
  • Enhances power quality
    • Minimizes voltage dips that can cause sensitive electronic equipment to shut down.

Operational Characteristics

  • Dropout action.
  • No parts expelled during circuit interruption.
  • Complies with Australian Spark Production Standard AS 1033.1-1990. Ideal for installation in areas prone to grass fires.

Handling Characteristics

 

Ratings

50/60-Hz Ratings
Voltage, kV Amperes, RMS
System Class,
ANSI (IEC)
System Maximum BIL Cont. Interr., Sym.
60 Hz 50 Hz
Three-
Phase
Phase-to-
Neutral
Three-
Phase
Phase-to-
Neutral
15 (12) 15 8.7 15 8.7 110 20 12 000
15 (12) 15 8.7 15 8.7 125 20 12 000
25 (24) 29 16.8 26 15.1 125 20 12 000
25 (24) 29 16.8 26 15.1 150 20 12 000
25 (24) 29 16.8 26 15.1 150 20 12 000
22/38 (20.8/36) 22 20.8 150 20 12 000

♠ Also applies to phase-to-phase applications. Applications involving single-phase transformers connected phase-to-phase, as well as three-phase applications require the use of a Fault Tamer in each lead.

 Style

fault-tamer-style