Kewo motor soft starter,no need to built by pass contactor with SCR controlling new technology applying And cost saving. Motor soft starter with compact side design

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Product center -->Index > Soft Stater > Soft Starter > KEWO EM-GW Online Soft Starter

KEWO EM-GW Online Soft Starter

EM-GW motor soft starter is a new type motor starting and protection device that is integrated with power electronic technology, microprocessor and automatic control. This soft starter is able to steadily start and stop motor without step change so as to avoid mechanical or electric impact resulted from using conventional starting modes such as direct starting, star-delta starting and auto voltage reducing starting, and effectively reduce starting current and distribution capacity for fear of more investment on capacity expansion.

No need to built by pass contactor with SCR controlling new technology applying.----innovation And cost saving.

Specification:

Three-phase power supply: AC380V, 690V, 11kw to 250kw.

Provide online soft starter cabinet for above 320kw.

Applicable motor : General squirrel cage asynchronous motor .

EM-GW soft starter Features:

Fully and perfect protection function

Configure multiple motor protect function to ensure motor long term running well.

Phase missing protection

Over heat protection

Over current and over load protection

Output unbalance protection

Under voltage and over voltage protection

Load circuit protection

Under load protection

Minimise fault Maintenance of online soft starter
Free of the maintaining of contactors due to reduce the by pass contactor with SCR controlling new technology.
No request by pass contactor
Reduce the installation room
Less the wiring and connection problem
Labor cost saving
No contactor fault problem
Stable communication control
Computer communication interface is optional, including the PC demo software, Device net interface, Modbus, Profibus…
Reliability quality guarantee
1.Whole machine with load testing
2.High-voltage insulation test
3.Every unit need 24 hours old aging after completely testing.
4. Smooth start and Smooth Stop function
Specification

Item		Description
Input Power Supply	Input Voltage	Three-phase 380V/690 AC
Input Power Supply	Frequency	50/60Hz
Adaptive Motor		Squirrel-cage three-phase asynchronous motor
Starting Times		It is recommended not to exceed 20 times per hour.
Control Mode		(1)Operation panel control.(2) Operation panel + external control. 3) External control.(4) External control + COM control. (5) Operation panel + external + COM control.(6) Operation panel + COM control.(7) COM control.(8) No start or stop operation.
Start Mode		(1) Current-limiting to start.(2) Voltage ramp to start.(3) Torque control + current-limiting to start.(4) Torque control + voltage ramp to start. (5) Current ramp to start.(6) Voltage current-limiting double closed-loop start.
Stop Mode		(1) Soft stop.(2) Free stop.
Protective Function		(1) Open loop protection for external instantaneous stop terminals. (2) Over-heat protection for soft starter. (3) Protection for too long starting time. (4) Input open phase protection. (5) Output open phase protection. (6) Unbalanced three-phase protection. (7) starting over current protection. (8) Running overload protection. (9) Under voltage protection for power voltage. (10) Overvoltage protection for power voltage. (11) Protection for fault parameter setting. (12) Load short circuit protection. (13) Auto restart or incorrect wiring protection. (14)Incorrect wiring protection of external control stop terminals.
Ambient	Place to be used	Indoor location with good ventilation free from corrosive gas and conductive dust.
	Altitude	Below 1000M. It have to rise the rate power when the altitude is more than 1000M.
	Temperature	-30 +55 oC
	Humidity	90%RHwithout dew condensation.
	Vibration	<0.5G
Structure	Protection Class	IP20
Structure	Cooling Pattern	Natural wind cooling.

On line soft starter system wiring

Dimension of online EM-GW soft starter

Online soft starters can installed in one cabinet because it no request installed by pass ac contactor.
Applications case

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