Application – Three-Phase Motors
Overload Protection of
The characteristics of submersible motors are different 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
Fixed heater overloads must be the
air temperatures.
All heaters and amp settings shown are based on total line amps. When determining amperage settings or making heater selections for a
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
Refer to notes on page 29.
Table 28 - 60 Hz 4" Motors
HP | KW |
1/2 | 0.37 |
3/4 | 0.55 |
1 | 0.75 |
1.51.1
21.5
32.2
53.7
7.55.5
10 7.5
| NEMA | HEATERS FOR | ADJUSTABLE | |||
| OVERLOAD RELAYS | RELAYS | ||||
VOLTS | STARTER | |||||
FURNAS | G.E. | (NOTE 3) | ||||
| SIZE | |||||
|
|
| ||||
| (NOTE 1) | (NOTE 2) | SET | MAX. | ||
|
| |||||
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 | |
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 | |
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 | |
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 | |
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 | |
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 | |
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 | |
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 | |
380 | 1 | K62 | L241B | 19.5 | 21.0 | |
460 | 1 | K60 | L199B | 16.1 | 17.3 | |
575 | 1 | K56 | L165B | 12.9 | 13.6 | |
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