Home > Other Electrical Equipment >

Asynchronous Electric Motor Starter Medium Voltage 3 - 10kv Ac High Start Torque

Categories Solid State Soft Starter
Brand Name: Noker
Model Number: NKS300-800-10
Certification: ISO9001
Place of Origin: China
MOQ: 1 set
Price: To be discussed later
Payment Terms: L/C, T/T, Western Union
Supply Ability: 300 set per month
Delivery Time: 15-20 work days
Packaging Details: Wooden Packing
Maintenance: Convenient
Communication: Modbus-RTU
Protection: Perfect motor protection
Display: Chinese and English
Start torque: High start torque
Control algorithm: Fuzzy control algorithm
  • Product Details
  • Company Profile

Asynchronous Electric Motor Starter Medium Voltage 3 - 10kv Ac High Start Torque

Medium Voltage 3--10kVAC Asynchronous Electric Motor Pump Soft Starter


AC10KV Medium Voltage 800KW Squirrel-Cage Asynchronous Electric Motor Aluminum Zi Soft Starter for Water Pump is a high voltage motor soft starter designed with up-to date concept,and mainly applicable to the control of and protection for the starting and stopping of squirrel-cage type asynchronous ans synchronous motors.The starter is composed of several thyristors in series-parallel,and it can meet different current and voltage requirements.
The product is widely used in electric industry with rated voltage 3000 to 10000V,building materials chemical industry,metallurgy,steel and paper-making industries etc.,and can perform well if used together with various kinds of electromechanical devices including water pumps,fans,compressors,crashers,agitators and conveyer belt etc.,It is the ideal device for starting and protecting high voltage motors.

Technical Indicators


Basic parameters
Type of loadThree-phase squirrel cage asynchronous and synchronous motors
AC voltage3000---10000VAC
Service frequency50HZ/60HZ±2HZ
Phase sequenceCMV is allowed to work with any phase sequence
Composition of major loop(12SCRS,18SCRS,30SCRS depend on model)
Bypass contactorContactor with direct starting capacity
Control powerAC220V±15%
Transient voltage overload protectiondv/dt snubber network
Start frequency1-3 times per hour
Ambient conditionAmbient temperature: -20°C -+50°C
Relative humidity: 5%----95% no condensation
Altitude less than 1500m (derating when altitude is more than 1500m)
Protective functions
Open-phase protectionCut off any phase of primary power supply in the course of starting or operation.
Over-current protection in operationOperational Over-current protection setting: 20~500%Ie
Unbalanced phase current protectionUnbalanced phase current protection: 0~100%
Overload protection10A,10,15,20,25,30,OFF
Underload protectionUnderload protection grade: 0~99%
Action time of underload protection: 0~250S
Start timeoutStart time limit: 0~120S
Over-voltage protectionWhen voltage of primary power supply is 120% higher than rated value, over-voltage protection is enabled.
Under-voltage protectionWhen voltage of primary power supply is 70% lower than rated value, under-voltage protection is enabled.
Phase protectionAllow to work with any phase sequence (through setting parameter)
Ground protectionProtection available when grounding current is higher than set value
Description of communication
ProtocolModbus RTU
Communication interfaceRS485
Network connectionEach CMV can communicate with 31 CMV equipments in network.
FunctionOperation state and programming can be observed through communication interface.
Operating interface
LCD displayLCD display/touch screen display
LanguageChinese and English
Keyboard6 touch membrane keyboard
Meter display
Voltage of primary power supplyDisplay voltage of three-phase primary power supply
Three-phase currentDisplay current of three-phase major loop
Data record
Fault historyRecord recent 15 faults information
History of number of startsRecord number of starts of this soft starter

Catalogue


VoltageModelRated Current (A)W (mm)H(mm)L (mm)
3000VNKS300-400-3100100023001500
NKS300-630-3150
NKS300-1600-3400130023001600
NKS300-2500-3≥600Reserved
6000VNKS300-420-650100023001500
NKS300-630-675
NKS300-1250-6150
NKS300-1600-6200130023001600
NKS300-2500-6300
NKS300-3300-6400
NKS300-4150-6500
NKS300-5000-6≥600Reserved

10000V

NKS300-420-1030100023001500
NKS300-630-1045
NKS300-800-1060
NKS300-1250-1090
NKS300-1500-10110
NKS300-1800-10130
NKS300-2250-10160
NKS300-2500-10180
NKS300-2800-10200
NKS300-3500-10250
NKS300-4000-10280
NKS300-4500-10320130023001600
NKS300-5500-10400
NKS300-6000-10430
NKS300-7000-10500
NKS300-8500-10≥600Reserved

Connection Diagram



Application



NKS300 series products are designed to be free of maintenance. Like other electric equipments, this equipment should be regularly checked for fear of dust pollution, damp and environmental pollution resulted from industrial production. Serious pollution may result in high voltage discharge and affect the heat dissipation of SCR's cooler.
1 Fault analysis
When a fault occurs, the corresponding fault information will be displayed on LCD touch screen. The motor should be restarted after the fault is cleared. If the fault still can not be cleared using correct operating method and program processing, please contact the manufacturer.
2 Fault code
The soft starter has multiple protective functions. When the protective functions act, the soft starter will stop immediately and the current fault information will be displayed on LCD screen, touch screen and panel. Users can analyze and clear faults according to fault information.

Fault codeFaultCauseTroubleshooting
01Primary power phase lossPhase loss in starting or operation.Check the reliability of three-phase power
02Phase sequence errorPhase sequence reservedly connected.Adjust phase sequence or set phase sequence free of check.
03Parameters lostSet parameters lostCheck functions setting and reset
04Freq errorPoor quality of power grid?Check whether the power quality is found to range?
05Over-current in operationLoad suddenly becomes heavy.
Load variation is too large.
Adjust load running state
Adjust 1M13
07Unbalanced phase currentPhase loss or phase voltage is unbalancedAdjust 1M12
08Thyristor overheatInternal cooler is overheat
The starter is not well ventilated.
Check the qualification of fan
Lower start frequency
Check if the control power voltage is too low.
09Internal prohibitionViolate operating instructionEnsure operating instruction
10Start timeoutOverburdened and start time is too short.
Current limiting amplitude is too small.
Adjust ramp time 1M04
Adjust current limiting amplitude 1M05
--Over-voltage protectionPower voltage of major loop is higher than set valueAdjust over-voltage protection value
Check if primary power voltage if too high.
--Under-voltage protectionPower voltage of major loop is lower than set valueAdjust Under-voltage protection value
Check if primary power voltage is too low.
--Ground protectionGround current is larger than allowed valueCheck if there is ground current.
--Frequent start protectionFrequent startReduce start frequency
13Electronic thermal overloadThe duration of heavy current is too long.
Overload operation or not.
Check if motor current is wrongly set.
Overload or not.
14Abnormal SCRSCR works abnormally
Output phase loss for soft starter
Check whether SCR is damaged.
Check whether input or output of soft starter lacks phase.


3 Fault history.
This starter can at most record the recent 15 faults information for users.
4 Troubleshooting
As fault has memory, after fault is cleared, you can reset fault through pressing button "STOP" for above 4 seconds, external fault clearance input terminal (D1 or D2 multifunction input) or cutting off AC220V control power to restore the starter to the state of ready to start.
5 Maintenance
The working field should be regularly cleaned to reduce dust in ambient environment.The low and high voltage bins of NKS300 series high voltage soft starter should be regularly cleaned. It is necessary to use a brush or blower to remove dust inside bin (period less than 20 days)
It is also important to clean thyristor valve block. A blower with big power can be used to clean the valve block by blowing from up to down. Clean the field after blowing the thyristor valve block (period less than 6 months)
To ensure the normal operation, NKS300 series high voltage soft starter should be regularly dehumidified if the working field is wet. (Period is depended on the circumstance)
Considering that there is shake in working field when the soft starter is started, the secondary control wiring of NKS300 series high voltage soft starter should be regularly checked to examine whether the connecting terminal is loose. If yes, tighten the loose connecting terminal. (3 months as a period)


Packaging


Cheap Asynchronous Electric Motor Starter Medium Voltage 3 - 10kv Ac High Start Torque for sale
Send your message to this supplier
 
*From:
*To: Xi'an Noker Electric Co.,Ltd.
*Subject:
*Message:
Characters Remaining: (0/3000)
 
You may also be interested in :
Inquiry Cart 0
  • Haven't found right suppliers
  • Our buyer assistants can help you find the most suitable, 100% reliable suppliers from China.
  • And this service is free of charge.
  • we have buyer assistants who speak English, French, Spanish......and we are ready to help you anytime!
  • Submit Buying Request
    Contact Us Quickly