●Thyristor module: The thyristors with the same parameters in each phase are installed in series and parallel. According to the peak voltage requirements of the grid used, the number of thyristors connected in series is different. ●Valve body protection unit: including overvoltage absorbing network composed of RC network and voltage equalizing protection network composed of voltage equalizing unit. ●Optical fiber trigger component: adopt strong trigger pulse circuit to ensure the consistency and reliability of trigger; use optical fiber trigger to perform reliable high and low voltage isolation. ●Vacuum switch components: After the start is completed, the three-phase vacuum contactor is automatically closed, and the motor is put into operation on the grid. ●Signal acquisition and protection components: through voltage transformers, current transformers, lightning arresters, and zero-sequence current transformers, the main circuit voltage and current signals are collected, and the main CPU controls and performs corresponding protection. ●System control and display components: 32-bit ARM core micro-controller executes central control, Chinese LCD man-machine interface display. working principle The high-voltage solid-state soft starter adopts the combination of computer control technology and power electronic technology. The switching element of the main circuit adopts high-voltage and high-power thyristors. The output voltage is realized by controlling the thyristors. The starting current is optimally controlled according to the starting conditions to realize the stability of the motor. start and stop. The high-voltage solid-state soft starter can reduce the voltage applied to the motor by controlling the thyristor, and then increase the motor torque smoothly by slowly controlling the voltage and current applied to the motor until the motor accelerates to full speed, which can effectively reduce The starting current, and the thyristor static and dynamic voltage equalization protection measures should have the characteristics of advanced technology, compact structure, safety and reliability, and convenient maintenance. The high-voltage solid-state soft starter cabinet adopts a welded structure, which has the characteristics of good dust resistance, compact structure, and elegant appearance ●The high-voltage solid-state soft starter can reduce the voltage applied to the motor by controlling the thyristor, and the starting current is adjustable from 1 to 5 times the rated current. ●The high-voltage solid-state soft starter adopts signal multi-level processing and isolation technology, and has strong anti-interference ability. ●The high-voltage solid-state soft starter can accurately collect the synchronous signal and current signal of the high-voltage main circuit, and effectively realize the closed-loop control. ●The high-voltage solid-state soft starter has a bypass function, and it can switch to power frequency operation without disturbance after starting.
product model
Protective function ●Overload protection has 6 levels of protection, which are protected according to the set overload protection curve; ●Overcurrent protection: 20~500%le realizes overcurrent protection during operation by detecting the current during operation; ●Overvoltage protection: When the voltage of the main grid rises to 120% of the rated voltage, the delay is 1~10S (adjustable), and the trip protection; ●Under-voltage protection: When the main grid voltage is lower than 70% of the rated voltage, the delay time is 1~10S (adjustable), and the trip protection; ●Lack of phase protection: when any phase is missing, trip protection; ●Phase sequence protection: phase sequence detection can be set to protect when a phase sequence error is detected; ●Phase current unbalance: the main circuit current unbalance exceeds the set value (0~100% adjustable), trip protection; Thyristor over-temperature protection: When the temperature of the thyristor radiator exceeds 85°C, trip protection; ●Starting overtime protection: within the longest set starting time (0~120S adjustable), if the motor has not reached full speed, it will trip for protection; ●Zero-sequence protection: when leakage current is detected, trip protection ●With self-test program: power-on self-test Operation/Control Mode ●Input method: menu-based, Chinese LCD man-machine interface display; ●With local, remote (external dry contact), DCS, communication (485 interface, Modbus) control functions; Dimensions ●The outer dimensions of the soft starter cabinet are 1000 x 1500 x 2300 (width/depth x height). The internal layout meets the requirements of safety, convenient wiring, and convenient maintenance. Technical features and configuration ●Maintenance-free: Thyristor is a non-contact electronic device, which is different from other types of products that require frequent maintenance of liquids and components, etc., turning the mechanical life into the service life of electronic components, and it does not need to be shut down for maintenance after several years of continuous operation. ●Easy to install and use: ZDGR is a complete motor starting control and protection system. It is permissible to use low voltage for electrical testing of the entire system before operating at high voltage. ●Using high-voltage power thyristors, component structure, modular design, easy to install and maintain ●Multiple overvoltage absorption and protection technologies ●Built-in vacuum contactor with direct starting capacity, the motor can work in direct starting mode during the maintenance process or in case of failure to ensure the continuity of production. ●Using 32-bit ARM core micro-controller to perform central control, real-time and efficient control, intuitive display, high reliability and good stability. ●Adopting foreign famous high anti-interference digital trigger and optical fiber isolation technology makes the high and low voltage of the device to be reliably isolated. ●Adopt Chinese liquid crystal display system, user-friendly operation interface. ●RS-485 communication interface, standard MODBUS protocol. It can communicate with the host computer or centralized control center. ●All circuit boards have undergone strict aging tests and three-proof treatment. The main board and all control board CPUs are all imported products. ●Voltage sampling adopts electromagnetic voltage transformer with good sampling linearity, strong anti-interference, and no zero drift ●The high-voltage solid-state soft starter has three-phase voltage and three-phase current display. Protection function: lack of phase, undervoltage, overvoltage, overcurrent, overload, etc., using RS485 interface to lead to centralized monitoring. The busbar of the high-voltage solid-state soft starter is made of high-quality electrolytic copper with a purity of 99.99%. The carrying capacity and cross-sectional area meet the design requirements. The inner structure of the cabinet is supported by molds made of high-insulation materials. Card. ●High-voltage solid-state soft starter reserves system signal contacts ①Output signal contact: Running status signal: normally open contact Stop state signal: normally closed contact Fault status signal: normally open contact 4~20mA analog output signal ②External input signal contact: Remote start signal input: passive normally open contact Remote stop signal input: passive normally closed contact DCS start signal input: passive normally open contact DCS stop signal input: passive normally closed contact Switchgear ready signal input: passive normally open contact
Technical Parameters
Features ●Soft start control mode Soft start/soft stop voltage (current) characteristic curve HYSQ1 series soft starters have multiple starting modes: current-limiting soft start, voltage linear curve start, voltage exponential curve start, current linear curve start, current exponential curve start; multiple stop modes: free stop, soft stop, braking brake , Soft stop + brake, also has a jog function. Users can choose different starting and stopping methods according to different loads and specific conditions of use. Current-Limited Soft-Start. When using the current-limiting soft start mode, the starting time is set to zero, and after the soft-starting device receives the starting command, its output voltage increases rapidly until the output current reaches the set current limit value Im, the output current does not increase anymore, and the motor speeds up. After a period of time, the current begins to drop, and the output voltage increases rapidly until the full voltage is output, and the starting process is completed. ●Voltage Exponential Curve The output voltage rises exponentially with the set starting time, and the output current rises at a certain When the starting current increases to the limit value Im, the current remains constant until the starting is completed. When using this mode, it is necessary to set the starting time and current limiting multiple at the same time. ●Voltage linear curve The output voltage rises linearly with the set starting time, and the output current increases at a certain rate. When the starting current increases to the limit value Im, the current remains constant until the starting is completed. ●Current Exponential Curve The output current rises according to the exponential characteristic with the set starting time. When the starting current increases to the limit value Im, the current remains constant until the starting is completed. When using this mode, it is necessary to set the starting time and current limiting multiple at the same time. ●Current linear curve The output current rises linearly with the set starting time. When the starting current increases to the limit value Im, the current remains constant until the starting is completed. ●Kick torque soft start The kick torque soft start mode is mainly applied to load motors with relatively large static resistance, and overcomes the large static friction torque by applying an instantaneous large starting torque. In this mode, the output voltage quickly reaches the set jump voltage, and when it reaches the preset jump time, it drops to the initial voltage, and then starts smoothly according to the set initial voltage\current and starting time until the start is completed. . ●Free parking When the soft stop time and braking time are set to zero at the same time, it is the free stop mode. After the soft starter receives the stop command, it first blocks the control relay of the bypass contactor and then blocks the output of the main circuit thyristor, and the motor stops freely according to the load inertia. . ●Soft parking When the soft stop time is not set to zero, it will be a soft stop when it is stopped under full voltage. In this mode, the soft start device will disconnect the bypass contactor first, and the output voltage of the soft start device will be at the set soft stop. During the parking time, it will gradually drop to the set soft stop termination voltage value, and the starting device will turn to the braking state (braking time is not zero) or coast to a stop after the soft stop process ends. ●Brake Brake When the braking time is set for the soft starter and the braking time relay output is selected, the output signal of the braking time relay remains valid during the stop (braking) time after the soft starter stops freely. Use the time relay output signal to control the external brake unit or mechanical brake electrical ●Control unit soft stop + brake brake When the soft-stop time and braking time are set for the soft-starter, the soft-starter first disconnects the bypass contactor, and the output voltage of the soft-starter gradually drops to the set soft-stop time within the set soft-stop time. End voltage value, brake within the set braking time after the soft stop process ends.
Other parameters
Technical Parameters ●Load type: three-phase medium and high voltage squirrel-cage asynchronous and synchronous motors ●Rated voltage: 3KV, 6KV, 10KV±30% ●Power frequency: 50Hz ●Adapted power: ●The full load current of the motor is adjustable from 15 to 9999 ●Initial voltage: (20~100%)Ue adjustable ●Initial current: (20~100%) le adjustable ●Current limiting multiple: 100~500%le adjustable ●Start/stop time: 0~120S adjustable Four starting control curves: voltage ramp starting exponential curve Voltage ramp start linear curve Current Ramp Start Exponential Curve Current ramp start linear curve ●Skick voltage: 20~100%Ue adjustable Kick time: 0~2000ms adjustable ●Starting frequency: 1-6 times/hour, the interval between every two times is not less than 10 minutes ●Grounding method: three-phase, neutral point is not grounded ●Communication interface: RS-485 interface ●Cooling method: natural air cooling ●Main circuit inlet and outlet way: Bottom-in and Bottom-out ●Control method: one drag one ●Protection grade: Ip32 Conditions of Use ●Ambient temperature: -25°C~+50°C ●Using place: indoors, free from direct sunlight, dust, corrosive gas, flammable and explosive gas, oil mist, water vapor, dripping water or salt, rainproof and moisture-proof ●Humidity: 5%~95%, no condensation ●Vibration: less than 5.9m/ Sec2(=0.6g) ●No metal shavings: places with conductive dust, corrosive gas and severe vibration ●Altitude: ≤ 1500 meters (more than 1500 meters need derating);
