Franklin 2007 ユーザーズマニュアル
Application – Three-Phase Motors
Overload Protection of Three-Phase Submersible Motors
The characteristics of submersible motors are different
than standard motors and special overload protection
is required.
than standard motors and special overload protection
is required.
If the motor is locked, the overload protection must trip
within 10 seconds to protect the motor windings. Subtrol/
SubMonitor, a Franklin-approved adjustable overload
relay, or a Franklin-approved fi xed heater must be used.
within 10 seconds to protect the motor windings. Subtrol/
SubMonitor, a Franklin-approved adjustable overload
relay, or a Franklin-approved fi xed heater must be used.
Fixed heater overloads must be the ambient-compensated
quick-trip type to maintain protection at high and low
air temperatures.
quick-trip type to maintain protection at high and low
air temperatures.
All heaters and amp settings shown are based on total
line amps. When determining amperage settings or
making heater selections for a six-lead motor with a
Wye-Delta starter, divide motor amps by 1.732.
line amps. When determining amperage settings or
making heater selections for a six-lead motor with a
Wye-Delta starter, divide motor amps by 1.732.
pages 28, 29 and 30 list the correct selection and
settings for some manufacturers. Approval for other
manufacturers’ types not listed may be requested by
calling Franklin’s Submersible Service Hotline at
settings for some manufacturers. Approval for other
manufacturers’ types not listed may be requested by
calling Franklin’s Submersible Service Hotline at
800-348-2420.
Refer to notes on page 29.
HP
KW
VOLTS
NEMA
STARTER
SIZE
HEATERS FOR
OVERLOAD RELAYS
ADJUSTABLE
RELAYS
(NOTE 3)
FURNAS
(NOTE 1)
G.E.
(NOTE 2)
SET
MAX.
1/2
0.37
200
00
K31
L380A
3.2
3.4
230
00
K28
L343A
2.7
2.9
380
00
K22
L211A
1.7
1.8
460
00
-
L174A
1.4
1.5
575
00
-
-
1.2
1.3
3/4
0.55
200
00
K34
L51CA
4.1
4.4
230
00
K32
L420A
3.5
3.8
380
00
K27
L282A
2.3
2.5
460
00
K23
L211A
1.8
1.9
575
00
K21
L193A
1.5
1.6
1
0.75
200
00
K37
L618A
5.0
5.4
230
00
K36
L561A
4.4
4.7
380
00
K28
L310A
2.6
2.8
460
00
K26
L282A
2.2
2.4
575
00
K23
L211A
1.8
1.9
1.5
1.1
200
00
K42
L750A
6.3
6.8
230
00
K39
L680A
5.5
5.9
380
00
K32
L420A
3.3
3.6
460
00
K29
L343A
2.8
3.0
575
00
K26
L282A
2.2
2.4
2
1.5
200
0
K50
L111B
8.6
9.3
230
0
K49
L910A
7.5
8.1
380
0
K36
L561A
4.6
4.9
460
00
K33
L463A
3.8
4.1
575
00
K29
L380A
3.0
3.2
3
2.2
200
0
K55
L147B
11.6
12.5
230
0
K52
L122B
10.1
10.9
380
0
K41
L750A
6.1
6.6
460
0
K37
L618A
5.1
5.5
575
0
K34
L510A
4.1
4.4
5
3.7
200
1
K62
L241B
19.1
20.5
230
1
K61
L199B
16.6
17.8
380
0
K52
L122B
10.0
10.8
460
0
K49
L100B
8.3
8.9
575
0
K42
L825A
6.6
7.1
7.5
5.5
200
1
K68
L332B
28.4
30.5
230
1
K67
L293B
24.6
26.4
380
1
K58
L181B
14.9
16.0
460
1
K55
L147B
12.3
13.2
575
1
K52
L122B
9.9
10.6
10
7.5
380
1
K62
L241B
19.5
21.0
460
1
K60
L199B
16.1
17.3
575
1
K56
L165B
12.9
13.6
Class 10 Protection Required
Table 28 - 60 Hz
4"
Motors
28