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16
active tracking filtering with surge PrOtectiOn
STF SERIES
Specications
Dimensional Drawings
F
Design Style 2
F
Design Style 4
DESCRIPTION 120/208 VAC MODELS 277/480 VAC MODELS 480 VAC MODELS
Input Voltage 0-150/240 Vrms 0-320/520 Vrms 0-520 Vrms
Line Frequency 50/60 Hz
Transient Attenuation Response
Time
Instantaneous
Mean Time Between Failure (MTBF) > 100,000 Hours (Mil Std. 217F)
Packaging
Single phase < 30 Amps housed in black, high impact plastic case,
vacuum impregnated magnetics, epoxy encapsulated.
Single phase > 30 Amps, 480 Vac,
and three phase units housed in NEMA 12 enclosures.
Operating Temperature -40°C to +45°C; Derate Linearly to 60% at +70ºC
Load Surge Current Rating
10m sec: 5 x Nominal
1 sec : 3 x Nominal
5 sec: 2 x Nominal
Transient Reduction
Minimum of 40dB from 50 kHz through 50 MHz. Attenuation is greater than 50 dB to the surge withstand
capability Ringwave test IEEE C62.41, Category “A” (IEEE Category A Ringwave 6 kV, 200A, 100 kHz)
and “B” (IEEE Category B Ringwave 6 kV, 500 A, 100 kHz).
Warranty
10 year limited warranty