Contact Us+8613505873345

Search
Banner

Low Voltage Motor Soft Starter

Description

Product Details:
Brand Name: SAFESAVE
Model Number: SJR3-3000
Rated power:30kw-355kw
Type: Three phase 660V
Inbuilt bypass: Yes
Frequency: 50/60hz
Warranty: 18 months

Share:

Product Details

Technical Parameter

softstarter-3000 -



Product Overview:

SAFESAVE SJR3-3000 series with inbuilt bypass contactor the soft starter provides complete motor protection functions including start control, running and overloading, phase failure, three-phase unbalance, over-voltage, under-voltage protection and so on with no need to further install bypass contactor and thermal relay. therefore, as another great achievement in the intelligentization of motor protection and networked technology application, it simplifies the circuit, reduces the volume, cuts the cost, makes installation and using more convenient.



ac motor starter-2


Voltage and current limiting double closed-loop starting:

a) The motor will be under double closed-loop starting mode when code F is set to 5(double closed loop). The voltage and current limiting closed-loop starting mode which adopts the double closed-loop control of voltage ramp and current limiting is a comprehensive starting mode requires both smooth starting and strict current limiting. It employs the prediction algorithm which estimates the operation status of the motor

b) Output voltage wave of this starting mode varies with the motors and loadings

 

Soft stop:

There are two types of stop mode for SJR3 series soft starter, namely, soft stop mode and free stop mode:

a) The soft starter will be under soft stop mode when code F2 is not set to 0. Figure 12-6-1 shows the output current

wave of the soft stop mode. T is the soft stop time set by the code F2. Under this stop mode, power supply of the motor will be switched to thyristor output of the soft starter through the bypass contactor, and the output voltage of the soft starter will gradually drop from the full voltage to enable the rotation speed of the motor reduce smoothly to avoid mechanical shock until the motor stops running. The output cut-off voltage during soft start shall be equal to the starting voltage during start.

b) The soft stop mode can reduce and even eliminate surge of load of pumps and reduce the large current shock during soft stop. The soft stop current limiting value is the percentage calculated from the starting current limiting.

0




The list of SJR3-3000 series motor softstarter

SJR3-3000 soft starter


Dimensions of SJR3 series motor softstarter:

4

5


Application of SJR3 series motor softstarter:

6


Certificate:

7

Reference for application fields

Application of
mechanical type 
load type The executive ability of SJR3Starting current(%)Starting time(s)
Centrifugal pumpStandard loadSlow shutdown protection(to eliminate water hammer),
under-load protection or protection against phase inversion
3005-15
Piston pumoStandard loadRun test.Control of no-lubrication run and pump rotation direction.3505-15
FanStandard load,
heavy load if>30s
Having detected overload or under load caused by blockage,
it will provides braking torque.(click on fan to interrupt drive)
30010-40
Shrink machine Standard load Motor protection, the motor can also provide special 3005-10
Screw compressoeStandard loadProvides protection against phase reversal,and is used for automatic discharge of contact when the machine is stopped3503-20
Centrifugal compressorStandard load,
heavy load if>30s
Provides protection against phase reversal,and is used for
automatic discharge of contact when the machine is stopped
30010-40
Piston compressor Standard loadProvides protection against phase reversal,and is used for
automatic discharge of contact when the machine is stopped
3505-10
The transmission belt/
transmission machine 
Standard loadThe process control of fault detection or the under-load control
of the circuit 
3503-10
Spiral craneStandard loadOverload control of harsh environment detection 3003-10
T-cable car Standard loadOverload control of blockage detection3002-10
ElevatorStandard load Overload control of blockage detection.Constant start of varying load4005-10
Saw/bandStandard loadFast stop brake 300-3505-60
Crusher/chip cutting machine Heavy load Control starting torque 4003-10
Blender Standard load Current display,indication of product density 3505-20
Mixer Standard load Current display3505-10
Lapping machine Heavy load The vibration is limied when the machine is stopped.Overload control
of blockage detection 
4505-60
Crushing machine Standard load The vibration is limied when the machine is stopped.Overload control
of blockage detection 
40010-40
Refining machine Standard load Control starting and stop torque3005-30
PressHeavy load Increase working cycle brake 40020-60
Tracting lift Standard load Overload control of blockage detection or under load control for the
detection of breakpoints
4002-10
Lifting screwStandard loadOverload control of blockage detection or under load control for the
detection of breakpoints
3003-10
Tracting lift Standard loadOverload control of blockage detection or under load control for the
detection of breakpoints
4002-10
Lifting screwStandard loadOverload control of blockage detection or under load control for the
detection of breakpoints
3003-10