A large percentage of electrical energy is utilized in running motors in industries. A wide variety of motors are used depending upon the
application.
Star Delta Starters are used with squirrel cage induction motors to reduce the starting current. They operate the motor in star mode at start and
after the set time delay, it switches over to Delta mode and continuous to run in delta irrespective of whether the load is low or high.
when a motor is running at less than half of rated output, 50 percentage of full load current it is possible to SAVE THE ENERGY by re connected
to star. As such when a motors is re connected to star from delta it is possible to save energy, and ALSO IMPROVE POWER FACTOR OF A MOTOR .
INJECTION MOTOR SOLID STATE ENERGY SAVER is a Electronic Unit .it comes along with current transformer. The current transformer is to
designed and match the each capacity of full load current. The current transformer sensing line current is below 50 percentage of full load
current.The energy saver unit motor is to operate in star mode and till the line current rises to 48 percentage of full load . when the sensing
current reaches set current of 48 percentage i.e line current of Full Load INJUCTION MOTOR ENERGY SAVER unit to operate ,the motor in delta.
If the sensing current is above set level continually motor operate in delta. There is a fixed time delay of Change over is from delta to Star and
there is no time delay of star to delta . The change over from delta to star and star to delta is automatic. THE PANEL BUILT IN STAR AND DELTA
ARE SOLID STATE DEVICES AND MAINS AS A CONTACTOR. THERE IS NO MOVING PARTS OF STAR AND DELTA POWER WIRING. SOLID STATE
DEVICES OPREATES IN VOLTAGE ZERO CROSSED.
Advantages:
1. Reduction line current,
2. Energy Saving Reduction in KW and KWH,
3. Reduction in KVA, contributing to reduction in maximum demand,
4. Improvement in Power Factor,
5. Running over load current overload protection and
6. Reduces the motor temperature runs in star period and cooler leading to increase in motor life.
Percentage of Energy saving & pay back period :20 to 30 percentage of saving in some cases it may higher.
Type of load :
INJECTION MOTOR SOLID STATE ENERGY SAVER is suitable of fast frequent load changes.
There is a possibility to save energy motor capacity running load measured line current is below amps for ex list given below..
| MOTOR CAPACITY | Scope Of Measured Line Current in amps | MOTOR CAPACITY | Scope Of Measured Line Current in amps |
| 10 H.P | 7.5 | 40 H.P | 27 |
| 15 H.P | 13 | 50 H.P | 32 |
| 20 H.P | 16 | 60 H.P | 40 |
| 30 H.P | 24 | 75 H.P | 50 |