Toshiba 18 - 1250 A - Manual (Page 11)

TE Series Digital Solid State Soft Starters 18 – 1250A
4
1.2 Sizes and Ratings
The Toshiba TE Series starters are current rated controllers. Max. Amp
ratings are for continuous duty and must not be exceeded. Always
check the motor nameplate FLA and Service Factor to ensure proper
sizing.
Each size has an adjustable range of current from 50% to 100% of the
Max Amp rating. Table 1.2 below shows the Current Ratings available.
1.2.1 Selecting for Service Factor Utilization
Many NEMA design motors include a design rating referred to
as Service Factor (SF) that may allow continuous operation
above the nameplate current rating. If using this Service
Factor, the TE Series starter must be sized for the total amps
used. For proper selection of the TE Series starter when using
SF continuously, multiply the nameplate FLA by the stated
Service Factor, or use stated Service Factor Amps (SFA) if
listed on the nameplate. Following is an excerpt from the
NEMA MG-1 standards for AC Motors that describes the
issues concerning the use of Service Factor ratings.
"When an induction motor is operated at any service factor
greater than 1.0, it may have efficiency, power factor and
speed different than those at rated load. Locked rotor torque
and current and breakdown torque will remain the same. A
motor operating continuously at any service factor greater than
1.0 will have a reduced life expectancy compared to operating
at its nameplate horsepower."
When using this feature, simply program the TE Series
Service Factor (F002) to the nameplate rating see section
5.6.1. All other adjustments to protection circuits are done
automatically within the TE Series.
1.2.2 Selecting for Across the Line Bypass
If you need to be able to start the motor Across-the-Line if the
TE Series electronics are out of service, the starter can also
be selected based upon the rating of the Bypass Contactor.
Some users may also elect to size their Bypass Contactors per
NEMA guidelines. Please use the Product Price Catalog for
details and notes on doing this, and see Appendix 5 for special
considerations regarding Overload Protection.
ƒ NOTE:
The TE…-BP Series starters include the ability to connect a dry
contact directly to the Bypass Contactor coil control circuit. These
terminals shipped are covered and should be used ONLY when
necessary for Emergency Bypass operation and with an external
Overload Relay. See Appendix 5 for additional information.
No field wiring is necessary to these terminals if this feature is not
used.
Model
Number
Current
Range
Min. - Max.
TE-18-BP 9 - 18
TE-28-BP 14 - 28
TE-39-BP 19 - 39
TE-48-BP 24 - 48
TE-62-BP 36 - 62
TE-78-BP 39 - 78
TE-92-BP 46 - 92
TE-112-BP 56 - 112
TE-150-BP 75 - 150
TE-160-BP 80 - 160
TE-210-BP or -P 105 - 210
TE-275-BP or -P 138 - 275
TE-360-BP or -P 180 - 360
TE-450-BP or -P 225 - 450
TE-550-BP or -P 275 - 550
TE-718-BP or -P 359 - 718
TE-900-BP or -P 450 - 900
TE-1006-BP or -P 503 - 1006
TE-1250-BP or -P 625 - 1250
Table 1.2: TE Series Range