SFGRJ-10 High Voltage Solid State Soft Start Cabinet
Overview
SFGRJ high voltage motor solid state soft starter is a soft starter device used to start 3000V, 6000V.10000V medium and high voltage AC asynchronous or synchronous motors. It connects three-phase parallel thyristor components and electronic control equipment between the stator winding of the high voltage motor and the power supply. When the motor starts, the conduction angle of the thyristor is controlled according to a certain rule (such as constant current or voltage ramp), and the input voltage of the motor stator winding is continuously changed until full voltage. After starting, the bypass contactor is energized.
Scope of application
The products are widely used in water conservancy and hydropower, environmental protection industry (desulfurization and denitrification), sewage treatment, large-scale steel, chemical industry, petroleum, fire protection, mining, electric power and other industrial fields. They can be well matched with motor-driven equipment such as water pumps, air compressors, fans, crushers, mixers, belt conveyors, etc.
Why use a soft start cabinet
If the AC squirrel cage asynchronous motor is started directly, it will generate a large impact current, which will impact the resistor and its load, and even endanger the safe operation of the power grid. Production machinery also has various requirements for the starting of the motor. Some production machinery that needs to start smoothly is not allowed to start directly. The main problem of star-delta conversion starting and autotransformer step-down starting is the current impact when the starting voltage and the operating voltage are converted during the starting process, which impacts the power grid and machinery and causes damage. The solid-state soft starter that uses the product thyristor AC voltage regulation technology is the most reasonable and professional starting method among the current step-down starting methods. The product complies with IEC, CE and other standards.
Environmental conditions
Ambient air temperature: 40℃;
Relative humidity: < 90%;
Installation location: no corrosive gas, no toxic dust;
Ventilation requirements: There must be no objects within 500mm above the starting cabinet. If there is no trench, the cabinet should be suspended 200mm.
How it works
The solid-state soft start cabinet is actually a thyristor AC voltage regulator. By changing the trigger angle of the thyristor, the output voltage of the thyristor voltage regulator circuit can be adjusted. When starting the motor with a soft starter: set an initial voltage, and the output voltage of the thyristor voltage regulator circuit starts to rise from this point; set a boost time, gradually increase the output voltage of the thyristor voltage regulator circuit, and the motor gradually accelerates; set a current limiting multiple, according to the actual current value measured by the current transformer, control the output voltage of the thyristor voltage regulator circuit, so that the actual current of the motor does not exceed the current limit value. In this way, during the entire starting process, the output of the soft starter is a smooth boost process (with current limiting function) until the thyristor is fully turned on and the motor works at the rated voltage.
Performance characteristics
It has a wide range of applicable voltage and power, and can be used with motors within 3kV-15kV and motor power (200kW-15000kW);
It has soft start and soft stop functions to fully ensure the safe start and stop of the system;
With LCD display, the motor starting mode, starting time and other parameters can be set; the starting time can be preset: different starting times can be set according to different load types; the initial voltage can be preset: different initial voltages can be set according to different load types; with current limiting function: the starting current does not exceed the set current value;Soft stop function: bypass contactor, after starting, the bypass contactor can be turned on; 4. Support PROFIBUS or MODBUS protocol through the RS485 interface:
Small size and high intelligence;
One soft starter can start multiple motors in sequence.
Selection Table
|
model |
Nominal voltage(KV) |
Nominal current (A) |
Output power(KW) |
Dimensions WxHxD(mm) |
|
SFGRJ-500/6 |
6 |
60 |
≤500 |
1000×2300×1500 |
|
SFGRJ-1000/6 |
6 |
110 |
500~1000 |
1000×2300×1500 |
|
SFGRJ-2000/6 |
6 |
320 |
1000~2000 |
1000×2300×1500 |
|
SFGRJ-5000/6 |
6 |
600 |
2000~5000 |
1300×2300×1500 |
|
SFGRJ-8000/6 |
6 |
1000 |
5000~8000 |
1300×2300×1500 |
|
SFGRJ-500/10 |
10 |
60 |
≤ 500 |
1000×2300×1500 |
|
SFGRJ-1000/10 |
10 |
80 |
500~1000 |
1000×2300×1500 |
|
SFGRJ-1500/10 |
10 |
110 |
1000~1500 |
1000×2300×1500 |
|
SFGRJ-2000/10 |
10 |
150 |
1500~2000 |
1300×2300×1500 |
|
SFGRJ-3000/10 |
10 |
200 |
2000~3000 |
1300×2300×1500 |
|
SFGRJ-5000/10 |
10 |
360 |
3000~5000 |
1300×2300×1500 |
|
SFGRJ-8000/10 |
10 |
800 |
5000~8000 |
1300×2300×1700 |
|
SFGRJ-10000/10 |
10 |
1000 |
8000~10000 |
1300×2300×1700 |
|
SFGRJ-15000/10 |
10 |
1500 |
10000~15000 |
1300×2300×1700 |
Installation Basics
All products include installation and commissioning guidance until the equipment is operating normally.
After-sales service
We have a complete after-sales service team to serve you wholeheartedly 24 hours a day. If there are any quality problems with the equipment within one year of operation, we will replace the components free of charge, and the equipment will be maintained for life. As a real manufacturer, even after the warranty period of the equipment has expired, we will provide preferential and convenient replacement of components, which greatly saves maintenance costs.