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|Material:||Aluminum Zinc Plate||Protection:||Perfect Motor Protection|
|Display:||LCD/touch Screen Display||Reliability And Stability:||High Reliability And Excellent Stability.|
|Dv/dt:||Low Dv/dt||Communication:||Modbus RTU|
low voltage metal clad switchgear,
safety electrical switchgear
1000KW Aluminum Zinc Platematerial For Motor Control Thyristor Solid State Soft Starter
AC10KV Medium Voltage 1000KW Thyristor Soft Starter for Motor Control/ 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 and 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.
|Terminal No.||Definition of terminal||Description|
|Control circuit||Analogue output||X1/1||Current output (+)||set by parameter items C06, C07|
|X1/2||Current output (-)|
|X1/4||Input terminal for remote run (RUN)||Jump X1/3,X1/4 to run|
|X1/5||Input terminal for remote stop (STOP)||Disconnect X1/3,X1/5 to stop|
|X1/6||Terminal for programmable digital input signal D1||Set by parameter item C03|
|X1/7||Terminal for programmable digital input signal D2||Set by parameter item C04|
|Current sampling||X2/1||Input terminal for L1 phase current sampling||To sample phase current of L1|
|X2/3||Input terminal for L3 phase current sampling||To sample phase current of L3|
|Analogue input||X2/5||PE for input signal||Reference grounding for input current signal|
|X2/6||Analogue input||Set by parameter item C06|
|RS 485-A||X2/7||RS 485 communication (+)|
|RS 485-B||X2/8||RS 485 communication (-)|
|Output relay K1||X3/1||Programmable output relay contact(default set: fault output)||K11 and K12 are closed when the relay is powered. Contact capacity: AC250V/5A, DC30V/5A|
|Output relay K2||X3/3||Output relay contact for bypass||K21 and K22 are closed when the relay is powered. Contact capacity: AC250V/5A, DC30V/5A|
|Output relay K3||X3/5||Programmable output relay contact||K31 and K32 are closed when the relay is powered. Contact capacity: AC250V/5A, DC30V/5A|
|Control voltage||X3/7||PE||To earth|
|X3/8||Control voltage||AC110V---AC220V+15% 50/60Hz|
|Type of load||Three-phase squirrel cage asynchronous and synchronous motors|
|Phase sequence||Allowed to work with any phase sequence|
|Composition of major loop||(12SCRS,18SCRS,30SCRS depend on model)|
|Bypass contactor||Contactor with direct starting capacity|
|Transient voltage overload protection||dv/dt snubber network|
|Start frequency||1-3 times per hour|
|Ambient condition||Ambient temperature: -20°C -+50°C|
|Relative humidity: 5%----95% no condensation|
|Altitude less than 1500m (derating when altitude is more than 1500m)|
|Open-phase protection||Cut off any phase of primary power supply in the course of starting or operation.|
|Over-current protection in operation||Operational Over-current protection setting: 20~500%Ie|
|Unbalanced phase current protection||Unbalanced phase current protection: 0~100%|
|Underload protection||Underload protection grade: 0~99%
Action time of underload protection: 0~250S
|Start timeout||Start time limit: 0~120S|
|Over-voltage protection||When voltage of primary power supply is 120% higher than rated value, over-voltage protection is enabled.|
|Under-voltage protection||When voltage of primary power supply is 70% lower than rated value, under-voltage protection is enabled.|
|Phase protection||Allow to work with any phase sequence (through setting parameter)|
|Ground protection||Protection available when grounding current is higher than set value|
|Description of communication|
|Network connection||Each can communicate with 31 equipments in network.|
|Function||Operation state and programming can be observed through communication interface.|
|LCD display||LCD display/touch screen display|
|Language||Chinese and English|
|Keyboard||6 touch membrane keyboard|
|Voltage of primary power supply||Display voltage of three-phase primary power supply|
|Three-phase current||Display current of three-phase major loop|
|Fault history||Record recent 15 faults information|
|History of number of starts||Record number of starts of this soft starter|
1. Free of maintenance:Thyristor is an electric device without contacts. Different from other kinds of products that need frequent maintenance on liquid and parts etc., it turns the mechanical lift into the service life of electronic components, so it needs no maintenance after running for many years.
2. Easy installation and operation:NKS300 is a complete system for controlling and protecting the starting of motor. It can put into operation only with the power line and motor line connected. The whole system can be tested electrically under low voltage before operating with high voltage.
3. Backup:The starter comes equipped with a vacuum contactor which can be used to start the motor directly in the inside. If NKS300 fails, the vacuum contactor can be used to start the motor directly to ensure the continuity of the production.
4. High voltage thyristor is a component of major loop, equipped with voltage balancing protection system and over-voltage protection system.
5. NKS300 comes equipped with an electromagnetic blocking device for fear of entering the high voltage device in the electrified state.
6. Advanced optical fiber transmission technique realizes the triggering detection of high voltage thyristor and the isolation between LV control loops.
7. 32-bit ARM-core microcontroller is used to perform central control which is real-time and high efficient with , high reliability and excellent stability.
8. LCD/touch screen display system in both Chinese and English with human-friendly operation interface.
9. RS-485 communication port can be used to communicate with the upper computer or centralized control center.
10. Aging experiments are made on all circuit boards.
|Voltage||Model||Rated Current (A)||W (mm)||H(mm)||L (mm)|
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)
Contact Person: Sales Manager