Type SF Dual, Round & Oval, Oil-Filled Motor Run Capacitors
Type SF dual rated oil filled motor run capacitors made with
Metallized Polypropylene
self-healingmetallizedpolypropylenefilmarecommonlyused
in air conditioning, motors and compressor applications. The
dual ratings in a single can provide two capacitors - one may
be used as a fan capacitor and the other as a compressor or
motor run capacitor. Three terminals allow one terminal to
act as a common while the other two are connected to the
individual capacitors.
The service life objective for the series is 60,000 hours of
operating life with a 94% survival rate when operated at full
voltage, 60 Hz, and rated ambient temperature. AC ca-
pacitors are frequently used at voltages and ambient tem-
peratures other than rated conditions. Service life may be
estimated under specific conditions of temperature and volt-
age by using the curves below.
Highlights
♦ Fault current protection up to 10,000 A
♦ Low energy consumption — <0.1% DF
♦ Self healing
♦ UL recognized under E71645
♦ Meets EIA Standard EIA-456-A
♦ CSA File Number 223507
♦ CUL File Number CYWT8
♦ 60,000 hours life
Specifications
Capacitance Range:
Voltage Range:
15–5 µF to 80–10 µF
370 Vac and 440 Vac
Capacitance Tolerance
Temperature Range:
±10% standard (±6% and ±3% available)
–40 ºC to +70 ºC
Life vs. Temperature
Life vs. Voltage
Capacitance vs. Temperature
100000
4
2
10000
1000
0
–2
100
10
–4
–6
20
Temperature °C
–20
0
40 60
100
–40
80
125
50
75
100
25
% of Rated Temperature
% of Rated Voltage
Part Numbering System
SF
C
37
S
15-5
K
291
B
Can Height
300 = 3.00"
Series
Case
C = 1 3/4" Ov al
AC Volt
Case Material
S = Steel
Cap
15-5 = 15-5 µF
Tol. ±%
L = ±3%
VAR
E = Dual 2,3,4 70 °C
SF
37 = 370 Vac
44 = 440 Vac
X = Other
D = 2.0" Ov al
T = Aluminum w ith
steel cov er
30-20 = 33-20 µF H = ±6%
50-7.5 = 50-7.5 µF K = ±10%
Z = Special
400 = 4.00"
388 = 3 7/8"
475 = 4 3/4"
Z = Other
S = 2.0" Round
T = 2 1/2" Round
A = All Aluminum
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