Type ETW – Non Polarized Aluminum Electrolytic Application

Type ETW Motor Start Capacitors
Type ETW – Non Polarized
Aluminum Electrolytic
Application
AC Motor Start capacitors provide small AC motors
with starting torque. They are designed for intermittent AC duty. Type ETW capacitors are provided with
a pressure safety vent and are furnished in phenolic
cases.
Highlights
High-Voltage
and
Motor Capacitors
•
•
•
•
•
•
•
•
Stock
Items
21-25
25-30
30-36
36-43
43-52
S
S
S
S
S
ETW21-125-N1
ETW25-125-N1
ETW30-125-N1
ETW36-125-N1
ETW43-125-N1
1.437
1.437
1.437
1.437
1.437
2.750
2.750
2.750
2.750
2.750
53-64
64-77
72-86
88-106
S
S
S
S
ETW53-125-N1
ETW64-125-N1
ETW72-125-N1
ETW88-125-N1
1.437
1.437
1.437
1.437
108-130
124-149
130-156
145-174
161-193
S
S
S
S
S
ETW108-125-N1
ETW124-125-N1
ETW130-125-N1
ETW145-125-N1
ETW161-125-N1
189-227
S
200-240
216-259
233-280
243-292
S
S
S
S
270-324
300-360
324-389
340-408
S
S
S
S
6.008
Catalog
Number
125 Vac
Case Dimensions
Inches
D
L
C
Cap.
µF
Voltage range: 125 to 330 Vac
Capacitance range: 21 to 1200 µF
50,000 starts minimum
Temperature range: -40°C to 65°C
Operating frequency: 50-60 Hz
Meets EIA RS463 Type II
2-bladed quick connects; standard terminations
Specify "R" at end of part number for 15,000
ohm, 2 Watt, bleeder resistor.
Catalog
Number
125 Vac (cont’d)
Case Dimensions
Inches
D
L
C
Cap.
µF
Stock
Items
0.500
0.500
0.500
0.500
0.500
378-454
400-480
430-516
460-552
540-648
S
S
S
S
S
ETW378-125-N2
ETW400-125-N2
ETW430-125-N2
ETW460-125-N2
ETW540-125-N4
1.437
1.437
1.437
1.437
1.812
3.375
3.375
3.375
3.375
3.375
0.500
0.500
0.500
0.500
0.625
2.750
2.750
2.750
2.750
0.500
0.500
0.500
0.500
590-708
708-850
829-995
1000-1200
S
S
S
S
ETW590-125-N4
ETW708-125-N4
ETW829-125-N4
ETW1000-125-N7
1.812
1.812
1.812
2.062
3.375
3.375
3.375
4.375
0.625
0.625
0.625
0.875
1.437
1.437
1.437
1.437
1.437
2.750
2.750
2.750
2.750
2.750
0.500
0.500
0.500
0.500
0.500
108-130
145-174
161-193
189-227
ETW108-165-N1
ETW145-165-N1
ETW161-165-N1
ETW189-165-N2
1.437
1.437
1.437
1.437
2.750
2.750
2.750
3.375
0.500
0.500
0.500
0.500
ETW189-125-N1
1.437
2.750
0.500
216-260
ETW216-165-N4
1.812
3.375
0.625
ETW200-125-N1
ETW216-125-N1
ETW233-125-N1
ETW243-125-N1
1.437
1.437
1.437
1.437
2.750
2.750
2.750
2.750
0.500
0.500
0.500
0.500
233-280
243-292
270-324
324-390
ETW233-165-N4
ETW243-165-N4
ETW270-165-N4
ETW324-165-N4
1.812
1.812
1.812
1.812
3.375
3.375
3.375
3.375
0.625
0.625
0.625
0.625
ETW270-125-N1
ETW300-125-N1
ETW324-125-N1
ETW340-125-N2
1.437
1.437
1.437
1.437
2.750
2.750
2.750
3.375
0.500
0.500
0.500
0.500
340-408
378-454
400-480
430-516
ETW340-165-N4
ETW378-165-N4
ETW400-165-N4
ETW430-165-N4
1.812
1.812
1.812
1.812
3.375
3.375
3.375
3.375
0.625
0.625
0.625
0.625
165 Vac
1605 East Rodney French Blvd.
New Bedford, MA 02744
(508) 996-8564, Fax (508) 996-3830
http://www.cornell-dubilier.com
E-mail: [email protected]
CORNELL
DUBILIER
Your Source For Capacitor Solutions
Type ETW Motor Start Capacitors
Catalog
Number
250 Vac
Case Dimensions
Inches
D
L
C
CAP
µF
Stock
Items
21-25
S
ETW21-250-N1
1.437
2.750
25-30
S
ETW25-250-N1
1.437
2.750
30-36
S
ETW30-250-N1
1.437
2.750
0.500
36-43
S
ETW36-250-N1
1.437
2.750
0.500
21-25
S
43-52
S
ETW43-250-N1
1.437
2.750
0.500
25-30
S
53-64
S
ETW53-250-N1
1.437
2.750
0.500
30-36
56-72
S
ETW56-250-N1
1.437
2.750
0.500
64-77
S
ETW64-250-N1
1.437
2.750
72-86
S
ETW72-250-N4
1.812
88-106
S
ETW88-250-N4
108-130
S
124-149
S
130-156
Catalog
Number
250 Vac (cont’d)
Case Dimensions
Inches
D
L
C
CAP
µF
Stock
Items
0.500
270-324
S
ETW270-250-N6
2.062
3.375
0.875
0.500
340-408
S
ETW340-250-N7
2.062
4.375
0.875
ETW21-330-N2
1.437
3.375
0.500
ETW25-330-N2
1.437
3.375
0.500
S
ETW30-330-N2
1.437
3.375
0.500
36-43
S
ETW36-330-N2
1.437
3.375
0.500
0.500
43-52
S
ETW43-330-N4
1.812
3.375
0.625
3.375
0.625
53-64
S
ETW53-330-N4
1.812
3.375
0.625
1.812
3.375
0.625
64-77
S
ETW64-330-N4
1.812
3.375
0.625
ETW108-250-N4
1.812
3.375
0.625
72-86
S
ETW72-330-N4
1.812
3.375
0.625
ETW124-250-N4
1.812
3.375
0.625
88-106
S
ETW88-330-N4
1.812
3.375
0.625
S
ETW130-250-N4
1.812
3.375
0.625
108-130
S
ETW108-330-N7
2.062
4.375
0.875
145-174
S
ETW145-250-N4
1.812
3.375
0.625
124-149
S
ETW124-330-N7
2.062
4.375
0.875
161-193
S
ETW161-250-N6
2.062
3.375
0.875
130-156
S
ETW130-330-N7
2.062
4.375
0.875
189-227
S
ETW189-250-N6
2.062
3.375
0.875
145-174
S
ETW145-330-N7
2.062
4.375
0.875
216-259
S
ETW216-250-N6
2.062
3.375
0.875
161-193
S
ETW161-330-N7
2.062
4.375
0.875
233-280
S
ETW233-250-N6
2.062
3.375
0.875
189-227
S
ETW189-330-N7
2.062
4.375
0.875
243-292
S
ETW243-250-N6
2.062
3.375
0.875
216-259
S
ETW216-330-N7
2.062
4.375
0.875
330 Vac
High-Voltage
and
Motor Capacitors
Bracket, Endcap & Capacitor Assembly
Mounting Hardware
Case
Code
N1
N2
N4
N6
N7
Case Dimensions
(inches)
D
1.437
1.437
1.812
2.062
2.062
L
2.750
3.375
3.375
3.375
4.375
Optional
End
Cap
30066
30066
34618-3
34618-2
34618-2
Optional
Mounting
Bracket
34946-2
34946
34946
34946
34946-1
* Order both endcap and bracket for mounting
CORNELL
DUBILIER
Your Source For Capacitor Solutions
1605 East Rodney French Blvd.
New Bedford, MA 02744
(508) 996-8564, Fax (508) 996-3830
http://www.cornell-dubilier.com
E-mail: [email protected]
6.009
Application Guide for Type ETW Motor Start Capacitors
VOLTAGE RATING
Duty Cycles of Type II
The capacitorsís rated voltage must be greater than or equal to
the average voltage across the capacitor' s terminals during the motor starting cycle. This is not the same voltage as the motor
line voltage. In addition, the cutoff voltage rating of the capacitor must be greater than or equal to the maximum voltage attained
across the terminals of the capacitor in actual service.
The maximum recommended cut-off voltages for the four standard voltage ratings are as follows:
Rated
Voltage (rms)
125
165
250
330
Maximum
Cut-Off Voltage (rms)
160
210
300
400
Table A
Ra te d
Volta ge
VAC
(rm s)
125
165
250
These ratings are based on the maximum capacitor temperature
of 65 °C.
330
CAPACITANCE RATING
The capacitance is chosen to give the necessary starting torque to
the motor. The minimum capacitance value is the minimum designed capacitance. The maximum capacitance is 20% more than
the minimum value.
From
To
21-25
108-130
161-193
243-292
400-480
645-774
21-25
108-130
130-156
233-280
378-454
21-25
36-43
72-86
108-130
216-259
21-25
25-36
36-43
72-86
108-130
81-106
145-174
233-280
378-454
590-708
800-960
88-106
124-149
216-259
340-408
590-708
30-36
64-77
88-106
189-227
324-389
21-25
30-36
64-77
88-106
130-156
%
Duty
Se cs. Se cs. Cycle
(On) (Off)
0.75 29.25 2.500
1
59
1.670
1
89
1.110
1
119 0.833
1
179 0.556
1
239 0.417
1
59
1.670
1
89
1.110
1
119 0.833
1
179 0.556
1
239 0.417
1
59
1.670
1
89
1.110
1
119 0.833
1
179 0.556
1
239 0.417
1
59
1.670
1
89
1.110
1
119 0.833
1
179 0.556
1
239 0.417
Duty Cycle
#
of
Starts
50,000
50,000
33,500
25,000
16,500
12,500
33,500
33,500
25,000
16,500
12,500
33,500
33,500
25,000
16,500
12,500
33,500
33,500
25,000
16,500
12,500
Typical life expectancy is 50,000 cycles for 125V ratings, and 40,000
total cycles for 165, 250 and 330V ratings. The number of cycles
shown in the table above are for the convenient test time of 35 days
total for all ratings.
Duty Cycles of Type I
DUTY CYCLE
High-Voltage
and
Motor Capacitors
Ca pa citance
Ra ting (µ F)
Table B
The duty cycle should be calculated for each application. It is the
ratio of the time the capacitor is on voltage to the total time of one
cycle. The duty cycles for the normal performance of standard Type
II capacitors are listed in Table A. CDE type ETW capacitors may be
used in any intermittant application within their temperature and
voltage range where the duty cycle does not exceed that listed in Table
A. This is in accordance with the standards in EIA Specification
RS-463 for Type II capacitors. If a particular application exceeds the
normal duty cycle, but does not exceed the values listed in Table B,
an extra performance or Type I capacitor is required.
If an application exceeds the duty cycles of Type I, other methods of
capacitor selection must be used. Contact CDE, for Engineering
assistance.
FREQUENCY
MOUNTING
These capacitors are designed for 60 Hz application but may
be operated in the range of 47 Hz - 60 Hz without damage provided
voltage limitations stated above are observed. For other variations
in frequency, contact CDE.
Vertical mounting of the capacitor with the terminals
up is recommended. However, horizontal mounting is
acceptable providing the vent is in the upward position.
Vertical mounting with the terminals down is not
recommended because the capacitor life may be reduced.
6.010
Ra te d
Volta ge
VAC
(rm s)
Ca pa citance
Ra ting (µ F)
125
165
250
330
all
all
all
all
1605 East Rodney French Blvd.
New Bedford, MA 02744
(508) 996-8564, Fax (508) 996-3830
http://www.cornell-dubilier.com
E-mail: [email protected]
Duty Cycle
%
Duty
Se cs. Se cs. Cycle
(On) (Off)
0.75 29.25 2.500
1
59
1.670
1
59
1.670
1
59
1.670
#
of
Starts
75,000
40,000
40,000
40,000
CORNELL
DUBILIER
Your Source For Capacitor Solutions