Xi'an Noker Electric Co.,Ltd.
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AC6KV within ABB incoming line breaker 800KW Can Be Combined With KYN28 Switchgear Electric Motor Soft Starter
AC6KV within ABB incoming line breaker 800KW Can Be Combined With KYN28 Switchgear Electric Motor Soft Starter 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 load | Three-phase squirrel cage asynchronous and synchronous motors |
| AC voltage | 3000---10000VAC |
| Service frequency | 50HZ/60HZ±2HZ |
| 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 |
| Control power | AC220V±15% |
| 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) | |
| Protective functions | |
| 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% |
| Overload protection | 10A,10,15,20,25,30,OFF |
| 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 | |
| Protocol | Modbus RTU |
| Communication interface | RS485 |
| Network connection | Each can communicate with 31 equipments in network. |
| Function | Operation state and programming can be observed through communication interface. |
| Operating interface | |
| LCD display | LCD display/touch screen display |
| Language | Chinese and English |
| Keyboard | 6 touch membrane keyboard |
| Meter display | |
| Voltage of primary power supply | Display voltage of three-phase primary power supply |
| Three-phase current | Display current of three-phase major loop |
| Data record | |
| Fault history | Record recent 15 faults information |
| History of number of starts | Record number of starts of this soft starter |
Model Definition
Features
Catalogue
| Voltage | Model | Rated Current (A) | W (mm) | H(mm) | L (mm) |
| 3000V | NKS300-400-3-E | 100 | 1000 | 2300 | 1500 |
| NKS300-630-3-E | 150 | ||||
| 6000V | NKS300-420-6-E | 50 | 1000 | 2300 | 1500 |
| NKS300-630-6-E | 75 | ||||
| NKS300-1250-6-E | 150 | ||||
|
10000V | NKS300-420-10-E | 30 | 1000 | 2300 | 1500 |
| NKS300-630-10-E | 45 | ||||
| NKS300-800-10-E | 60 | ||||
| NKS300-1250-10-E | 90 | ||||
| NKS300-1500-10-E | 110 | ||||
| NKS300-1800-10-E | 130 | ||||
| NKS300-2250-10-E | 160 | ||||
| NKS300-2500-10-E | 180 | ||||
| NKS300-2800-10-E | 200 | ||||
| NKS300-3500-10-E | 250 | ||||
| NKS300-4000-10-E | 280 | ||||
| NKS300-7000-10-E | 500 |
Application