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An Introduction |
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Singled phased motors are widely used in home applications. they are operated directly by switch. MCB of mechanical starters which does not provide sufficient protection to motors and does not isolate the application in case of power failure GELCO's Electronics single phase motor starters provide protection to motor against over current, high voltage and isolates the motor in case of power failure.
Starters are available in elegent, dust proof ABS Plastic enclosure with different colours like white gray, ivory and wipro gray. |
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Technical specifications |
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| 1. |
Operating voltage |
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140 to 285 V |
| 2. |
Current range |
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2-5 Amp, 4-10 Amp, 8-14 Amp, 10-16 Amp, 14-22 Amp |
| 3. |
Overload tripping |
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As per inverse time current characteristic. |
| 4. |
High voltage cut-off |
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285 V |
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Cut-in |
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270 V |
| 5. |
On-off/reset |
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By manual push button |
| 6. |
Indications |
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Green - motor on red – overload |
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Model |
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GSW |
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For conventional single phase motors like Grinders, Polishers,Geysers,Wood working machines etc. provides overload and high voltage cut-off for any applience. |
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GSW-T |
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For Compressors/Air conditioners/Water coolers. Exhaust fans in factories and theaters.provides three minuits time delay in auto restart and auto/manual facility |
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GSW-D |
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For unattended pumps. Build in dry-run protection with 30% to 70% adjustable dry-run current. |
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Comparision |
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Features |
Switch |
MCB |
Mechanical Starters |
GELCO Starter |
Overload Protection |
Not provided |
Limited tips in short circuits only. |
Provided but not accurate |
Accurate overload protection |
High Voltage Cut-Off |
Not provided |
Not provided |
Not provided |
Provided at 285-290V |
On-Off Operation |
Manual by switch |
Manual by switch |
Manual by push buttons |
Manual by push buttons |
Power Failure Condition |
Remains On |
Remains on |
Remains On |
Isolates the motor when power fails |
Life And Maintenance |
Short life & not repairable |
not repairable |
Not repairable |
Long life and repairable |
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With 20 years experience in motor protection, GELCO developed a new 3 phase Direcr On Line Starter with following features.
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Electronic  pushbuttons and fault indicating panel. |
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Electronic Overload Protection calibrated with high accuracy and with inverse time current characteristics. |
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Inbuilt current sensing single phasing protects motor against single phasing upto motor terminal. |
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Unbalance current ckt. provides protection against unbalance supply voltage. |
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Low / High voltage indication cum protection against extremely low and high voltage with hysteresis gape. |
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| Specifications |
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| System Voltage: |
415 V, 3Ø, 50 Hz ± 15% |
| Current Range: |
Type:
303 - 1 - 2.5 Amp
304 - 2 to 5 Amp
305 - 4 to 10 Amp
306 - 8 to 20 Amp |
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| Protections |
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| Overload Tripping |
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As per inverse time current characteristic |
| Low tripping voltage |
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Below 260V within 4 to7 Sec. |
| High Voltage Tripping |
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Above 480V within 4 to 7 Sec. |
| Single Phasing Tripping |
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Upto motor terminal within 4 to 7 Sec. |
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| Controls & Indication |
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START, STOP/RESET pushbutton. |
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Current setting knob. |
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(Auto/Manual switch for GTA) |
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Motor On, Low Volt., High Volt, Overload (Auto for GTA) |
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| *Low/High voltage cut-off can be given as per party's requirement on request. |
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Models |
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GTW |
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DOL Starter for any three phase motor upto 7.5 HP. Inbuilt Low/High voltage cut off, single phasing upto motor terminal and electronic overload protection is provided. Adaptor facility is not provided. |
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GTC |
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DOL Starter for any three phase motor upto 7.5 HP. Inbuilt Low/High voltage cut off, single phasing upto motor terminal and electronic overload protection is provided. Adaptor facility is provided. |
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GTA |
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DOL Starter for any three phase motor upto 7.5 HP. Inbuilt Low/High voltage cut off, single phasing upto motor terminal and electronic overload protection is provided. Additional facility of autoswitch with Auto/Manual switch. In auto mode starter will start automatically after 1 min. if healthy input supply is available. |
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GTS |
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DOL Starter for any three phase motor. upto 7.5 HP designed for exhaust fan application. Inbuilt Low/High voltage cut off, single phasing upto motor terminal and electronic overload protection is provided. Additional facility for duty cycle timer is provided. Once starter is switched on by pushbutton, it automatically switch ON and OFF motor depending on duty cycle timing. Manual switch is not provided. |
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