KRMV-10KW-450KW
Short Description:
A high-voltage soft starter is a novel motor control device that integrates motor soft start, soft stop, light-load energy saving, and multiple protection functions. Its main components are three-phase anti-parallel thyristors connected in series between the power supply and the motor being controlled, along with their electronic control circuits. By using different methods to control the firing angle of the three-phase anti-parallel thyristors, the input voltage of the controlled motor can be varied according to different requirements, enabling the realization of various functions.
Product details
Product Overview:
High voltage soft starter is a novel motor control device that integrates motor soft start, soft stop, light load energy saving and multiple protection functions. Its main composition is the three opposite parallel gates and their electronic control circuits connected in series between the power supply and the controlled motor. Use different methods to control the conduction angle of the three opposite parallel gates, so that the input voltage of the controlled motor changes according to different requirements, and different functions can be realized.
How it works:
The high-voltage soft start cabinet adopts computer control technology and power electronics technology, and the switching element of the main loop adopts high-voltage and high-power thyristors, which realize the output voltage by controlling the thyristors, and the starting current is optimally controlled according to the starting conditions to achieve the smooth start and stop of the motor.
The high-voltage soft start cabinet can reduce the voltage applied to the motor by controlling the thyristors, and then smoothly increase the motor torque by slowly controlling the voltage and current applied to the motor, until the motor accelerates to full speed operation, which can effectively reduce the starting current, and the thyristor static and dynamic voltage equalization protection measures should have the characteristics of technology, compact structure, safety and reliability, and convenient maintenance
The high-voltage soft start cabinet adopts welded structure, which has the characteristics of good dust resistance, compact structure, and beautiful appearance
The high-voltage soft start cabinet can reduce the voltage applied to the motor by controlling the thyristors, and the starting current is adjustable by 1~5 times the rated current.
The high-voltage soft-start cabinet adopts signal multi-stage processing and isolation technology, which has strong anti-interference ability.
The high-voltage soft start cabinet can accurately collect the synchronization signal and current signal of the high-voltage main loop, effectively realizing closed-loop control. 1.3.7 The high-voltage solid-state soft starting device has a bypass function, and after the start is completed, it will cut to the power frequency operation without disturbance.
Protection function
There are 6 levels of overload protection, which are protected according to the set overload protection curve.
Overcurrent protection: 20-500% Ie realizes overcurrent protection during operation by detecting the current during operation;
Overvoltage protection: when the main grid voltage rises to 120% of the rated voltage, delay 1~10S (adjustable), trip protection;
Undervoltage protection: when the main grid voltage is lower than 70% of the rated voltage, the delay time is 1~10S (adjustable), trip protection;
Phase Loss Protection: When any phase is missing, trip protection;
Phase sequence protection: Phase sequence detection can be set to protect when phase sequence errors are detected.
Phase current imbalance: The current imbalance of the main loop exceeds the set value (0~100% adjustable), trip protection;
Thyristor over-temperature protection: trip protection when the temperature of the thyristor radiator exceeds 85°C;
Starting overtime protection: within the set long starting time (0~120S adjustable), the motor still does not reach full speed, trip protection;
Zero-sequence protection: trip protection when leakage current is detected
With self-test program: boot self-test
Technical characteristics and configuration
Maintenance-free: Triac is a contactless electronic device, unlike other types of products that require frequent maintenance of liquids and components, turning the mechanical life into the service life of electronic components, and there is no need for downtime and maintenance for several years of continuous operation.
Easy to install and use: KRMV-10KV-450KW is a complete motor start control and protection system. Allow the entire system to be electrically tested using low voltage before operating at increased voltage.
It adopts high-voltage power thyristors, with a modular structure and modular design, which is easy to install and maintain.
With multiple overvoltage absorption and protection technologies
The vacuum contactor with built-in direct starting capacity can work in the direct start mode during maintenance or when there is a fault to ensure the continuity of production.
It uses a 32-bit ARM core microcontroller to perform central control, which is real-time and efficient, intuitive display, high reliability and good stability.
The famous foreign anti-interference digital trigger and optical fiber isolation technology are used to make the high and low voltages of the device reliably isolated.
It adopts Chinese LCD display system and has a user-friendly operation interface.
RS-485 communication interface, standard MODBUS protocol. It can communicate with the host computer or the centralized control center.
The circuit boards have undergone strict aging experiments and are treated with three proofs, and the motherboard and control board CPU are all selected from original products.
Voltage sampling adopts electromagnetic voltage transformer, good sampling linearity, strong anti-interference, no zero drift
The high-voltage soft-start cabinet has three-phase voltage and three-phase current display. Protection functions: phase loss, undervoltage, overvoltage, overcurrent, overload, etc., RS485 interface is used to lead to centralized monitoring.
The high-voltage soft start cabinet bus is made of electrolytic copper, with a purity of 99.99%, and the ampacity carrying capacity and cross-sectional area are supported by high insulation material molds according to the design requirements.
The high-voltage soft-start cabinet reserves the signal contacts of the system
| Equipment Number | AQ1 | |
| Equipment Model | KRMV-10KV-450KW | |
| Primary Busbar | ||
| Single Line Diagram - Rated Voltage 10KV |  | |
| Equipment Purpose | High Voltage Soft Starter Device | |
| Power Equipment | Capacity (kW) | 450kW |
| Voltage (V) | 10kV | |
| Current (A) | 24A | |
| Soft Starter System | HYSQ-15 | |
| Components | Model | Specification |
| Contact | JZC5-10/630A AC220V | |
| High Voltage Circuit Breaker | XRNP1-10/0.5A | |
| Current Transformer | LZZBJ9-10 50/5A 0.5/10P10 | |
| Zero Sequence Transformer | LXK-120 50/5 | |
| Arrester | HY5WS-17/50 | |
| Controller Protection | Valve Group Protection, Over-voltage, Undervoltage, Ground Fault | |
| Principle Diagram/Operation Mode | Soft Start/Direct | |
| External Dimensions (Width*Height*Depth) | 1000*2300*1500 | |
