Subject: Trans-Guard EXT CLF – Eyebolt Terminals Improvement Date: 2/8/09
File: PCUP-08-003_EXT Page: 2
Features Benefits
• L-L voltage rating
Allows smaller backup fuses to be used in order to
substantially reduce arcing time and energy let-through
during a fault. This provides increased transformer
protection and greatly improves upstream coordination.
• Broad range of ratings
Makes it possible to provide current-limiting protection
for transformers as large as 2850KVA at 26.4kV,
3000KVA at 27.6kV, and 3800KVA at 34.5kV.
• Rigorous testing to meet ANSI/IEEE
standards
Internal quality requirements including 100% physical
inspection, resistance measurement, and helium mass
spectrometer leak testing
• Durable design
For long life including machined brass end caps,
filament wound high temperature epoxy tubular bodies,
sand filler and hermetic sealing system
• High fault current interrupting capability
25,000 amperes symmetrical
ELECTRICAL CHARACTERISTICS:
Notes:
1. All fuses have a rated maximum interrupting current of 25,000 A rms symmetrical.
2. Peak arc voltages quoted are for 25,000 A currents at the rated maximum voltage listed.
Reduced voltages and currents will reduce the peak arc voltage. Consult the factory for
information.
65 HTSS372065 450 2,600 11,600
80 HTSS372080 570 5,600 23,500
100 HTSS372100 720 9,500 36,100
125 HTSS372125 950 19,300 68,000
165 HTSS372165 102 1,200 43,500 155,000
38.0 38.0 104
Minimum
I/C
(Amps)
Minimum
Melt I2T
(A2Sec)
Maximum
Total I2T
(A2Sec)
Nominal Fuse
Voltage
Rating (kV)
Current
Rating
(Amps)
Fu se
Catalog
Number
Rated
Maxim um
Voltage
(kV)
Peak Arc
Vo l tage
(kV)
(2)