Main functions:
1. Decrease starting current.
Utilizing soft start as the most general application starting mode, the motor is given an initial voltage setting, from the initial voltage level; the output voltage to the motor is steplessly increased to the rated full voltage in the pre-setting ramp time. The starting current of the motor is limited in 2 times of the rated working current, while the conventional full voltage starting current is 5 or 6 times of the rated working current. The limited soft starting current can decrease the insulation damage to the motor & the cable and avoid the problem of mechanical and electric pressure as well as lengthen mechanical life of the ESP-unit and reduce maintenance.
2. Eliminate operating over-voltage.
Utilizing soft stop as the most general application stop mode, the output voltage to the motor is steplessly decreased from the full voltage to the point where the load torque is greater than the developed motor torque, this can eliminate the 3 or 4 times operating over-voltage occurred with conventional coast-to-rest stop or unexpected power-off. The destruction of the 3 or 4 times operating over-voltage is always a deathblow especially to the worn-out and low-insulating motor.
3. Surge voltage absorption equipment
The built-in resistance-capacitance surge voltage absorption equipment can effectively reduce the destruction of the opposing electromotive force occurred with coast-to-rest stop or unexpected power-off, so as to protect the motor.
4. By-pass contactor
If the Controller senses that the soft starter itself has a malfunction, the output voltage can be switched to full voltage (Power-Frequency) to ensure the continuous running by the built-in bypass contactor.
5. Auto-startup under load time delay
When mechanical unit soft stop under load, if user turn on the auto-startup when under load, it will soft start automatically by the time delay setting.
6. Consummate protection
It can protect the mechanical unit not only overload, under load, short circuit, phase loss, three phase unbalance, but also over voltage and under voltage protection, when this mode is turned on, when the working voltage is higher or lower than the setup value it can stop to protect the mechanical unit.
7. Backlit LCD display and programming keypad.
The human interface modules, a display panel and a Switchboard, can be used to program and display the following technical parameters:
* Three-phase current *Three-phase voltage
* Active Power *Reactive Power
* Apparent Power *Power factor
*175 pieces of diagnostic and running data
*Power Consumption.
8. Default Phase and Phase discrimination Protection
When the phase order is default or connect wrong, the unit would not start and clue on the LCD screen.
9. Grounding automatic-alarming function.
10. Display the online detection of unit insulated resistance. (*as usersf+ requirement)
11. Communication and remote control.
The Soft Controller can be configured to communicate via radio (and GSM or GPRS) or wire-line to computer in remote control center. The controller supports ModBus protocol. (*as usersf+ requirement)
All in one sentence, The QYRK serial Soft-Start Switchboard has very important meaning for lengthen the mechanical unit life, reduce maintenance and the ESP colligate cost. Normal ESP switchboard doesn't have these features.
Wgqh series of high voltage solid soft starter Performance characteristics The device combines series & parallel thyristor, professional insulating material imported with original packing and modern power & electric control technology, which is applicable to large and medium high voltage soft starting equipments with motor.
Model: Efficient 75kw to 10000kw AC wound rotor motor soft starter 1) direct starting problem motor will create big current shake if start directly ( 5-8 times more than rated current), it makes big strike for electic grid and loaded equipment, heavily reduce motor and equipment service life,Sometimes motor burnt .so,stepless smooth start and stop is neccessory 2) intelligent WYQ6 main function 1:smooth start, without shook to equipment, extend the using life,save equipment maintain cost 2:reduce start current, reduce temperature increasing of motor, largely extend the long of motor, 3:Full protect motor and loaded equipment 3)range of application: suitable to heavy load soft starting of wound rotor asynchronous motor, especially in industrial or mines with unstable or lower voltage 4)unique feature: 1: low starting current: the starting current is
1.Adopt 16 single chip micyoco digital automation automation control 2.The mode of connection is three input and six output, all series on line protaction will come ture. 3.The main component is from japan and the brand of cpu is philip. 4.Based on the different load we can set different current and voltage time of start torque , then we can get the best current pulse and the characteristic of the torque. 5.It can provide motor slip start progress, reduce the starting current on the impact of power grid. Reducing vibration and noise of equipment . Extended the life span of mechanical transmission, and improved working environment for artificial. 6.Starting current can be adjusted based on different load. Reduce the loss of start and to get the best torque based on the smallest current. 7.Has different kinds of protection, such as over current , over load and lin input phase loss, to insure the safety of the equipment and motor. 8.Theyí»doutput of the soft-start will be increased based on the setting the law, so controlled in accordance with the superior optimization of motor speed up the curve to complete the boot process. 9.A convenient external control interface has multi-function: digital delay start control, soft stop control input, start delay relay output, fault relay output. 10.Automatic identification of phase sequence and phase sequence protection with themselves
Jjr3000 series intelligent soft starter adopts international advanced electronics technology, mcp technology and modern control theory to efficiently limit start voltage of asynchronous motor. The equipment could be widely applied to fan, pump, conveyor, and compressor and other heavy load equipment. It is an excellent product to substitute traditional startup equipments such as star/triangle transition, self -coupling voltage reduction, magnetron voltage reduction and so on.
Model : WGQH high voltage cage motor soft start / soft stop Description: National patent owned ,digital intelligent control 1) Main function High voltage motor will creat big shake if start or stop directly, heavily influence the motor service life and loaded equipment , some times motor burnt . WGQH motor soft start/ stop is high-tech national patented product . 1) reduce motor start current, high efficient in saving power 2)much motor protection function (as following introduction) 3)easy install, free maintenance, save maintenance cost 4)highly increase the motor service life 5)accurate setup start torque /start current/start time/ stop time/ etc 6) can connect to computer, PLC 2)USING AREA: suitable motor AC squirrel cage motor Rated voltage it has a high effect of over 96%(top to 97%) 3>:the device combines series¶llel thyristor, professional insulating material imported with original packing and modern power& electric control technology 4)Unique Feature: 1> It perfectly protect the stator and motor from faults like short circuit, over current,current limiting, over-voltage, under-voltage,over load, open-phase, 3 phase unbalance, over heat, communication fault, 2>the main circuit is equippment with component-based structure,modularized installation method, can reach the target of multiiple onver-voltage absorption and protection. 3>it multiply limiting the clamp of transient dv/dt, lighting impulse voltage,operation wave over-voltage and that of transient transition process. it has unique measure and methos to reach pressure balancing of di/dt, valve recanalizing and turn-off. 4>different current intensities are isolated perfectly, the system adopts high anti-interferential digital contactor, matched with fiber/CT isolation transforming technology, which help to avoid interference of each current, making the high voltage performance is as reliable and safe . 5>:the specially designed fault detection return and judging system can pass the detecting result to the control circuit in time and start the sound and light alarm 6>unique heat dissiipation design can effectively cool the thyristor and machine 7>it is of small volume, low power dissipation, high sensitivity, and non-contact and so on, also easy to install. wooden case.
The soft starter of air-conditioning TL-ASSU220P3 is an embedded air-conditioning controller.It regulates the start-up voltage and current of the compressor intelligently by utilizing advanced micro-control technology of SCM,and effectively reduces the instantaneous current and power of the compressor while starting-up,thus protects the compressor and prolongs its life.Simultaneously,it also depresses the shock while air-conditioning starting up in the power supply network. The most important feature of our product is it can control the highest launching transient current of air conditioner to be about 2 times as great as its rated current.never exceed 3 times.It can effectively protect air conditioner compressor, extend its service time. Additionally, when it detects the compressor couldn't start because of the imbalance of pressure,it will protect the compressor, then restart after 90 seconds.So then effectively prevents the compressor from overburning for failure start. Main technical parameters Highest continuous working voltage: 250VAC. Highest continuous working current: 18A. Highest non-repetitive inrush current: 400A(300 M ohms. The tolerant pressure between the chassis and the shell: >3000 V/AC in 1 minute. Ambient temperature: -40 to 85 C. Relative Humidity: 0~95% RH(
soft starter is one of industry's most featured digital soft starters. It is designed to soft start and stop standard AC induction motors from 5.5kW to 850kW with a maximum voltage rating of 500VAC, designed in accordance with IEC, UL&CSA standards and conforming with CE, EMC and LV directives. Key Features Voltage ratings for 3 phase systems up to 500VAC 50/60Hz Output current from 14 to 1290 Amps, in 16 rating sizes for continuous operation from 50 - 120% Maximum applicable motor up to 700kW/400V in Class 10, and up to 600kW/400V in Class 20 Current limiting up to 700% Frequency range 45-65Hz Working ambient temperature 0-55�¦C. ratings derated 1.5%/�¦C above 40�¦C Relative humidity 95% Alfa-numeric programming keypad with status monitoring indication Programming Software tool Global Standards CE, IEC, UL & CSA Brands : Siemens, ABB, INVT, Delta, Danfoss, Mitsubishi, Rockwell, Schnieder, Chint
Temperature controller Features: High accuracy, reasonable price and easy operation Self-diagnosis function Fuzzy pid autotuning function is supplied as standard 1 ramp 1 dwell, and dwell time Soft start Input/output, isolated Fully configurable for t/c, rtd or linear Adjustable pv offset Heat/cool bimode output 1 alarm standard, optional 3nd alarm with 17 alarm models Pv, sv value, re-transmitter. Remote setpoint Switching power supply, ac85-265v 50/60hz or dc24v Preventive water, dust. (optional) P900 series process controllers 3 control patterns: 1 8-segment, 2 8-segment and 1 16-segment, can be chosen freely. Rs485 communication function, emi/esd protective function Measuring accuracy: ía0.5Ñfs (ía0.2Ñfs available) No need for backup battery, can memory information above 10 years Main technical index: External dimension and holing size (unit: mm
Power ntc thermistor description Power ntc thermistor can be a cost effective device to limit the amount of inrush current in a switching power supply or other devices when the power is first turned on. Power ntc thermistor limits surge current by functioning as a power resistor which drops from a high cold resistance to a low hot resistance when heated by the current flowing through it. Inrush-current limiters power ntc thermistor protect circuits from undesirably high currents, suppressing high inrush current surges, while its resistance remains negligible low during continuous operation. Thanks to their low resistance in the operating state, power thermistor have a considerably lower power dissipation than the fixed resistors frequently used for this application. Inrush current limiting power ntc thermistor application Limiting surge current, suitable for the protection of switch mode power supply, ups power, transformers, motors, various electric heating utensil, energy saving lights, ballast, various power circuit, amplifiers, colored displayer, monitors, color tv, filament protection, etc. Power thermistor components can also be used for the soft starting of motors, for example in vacuum cleaners with continuous currents of up to 20 a. Inrush current limiting power ntc thermistor advantages Low cost solid state device for inrush current supression. Minimise line current distortion and radio noise. Protect switches, rectifier diodes and smoothing capacitors against premature failures. Prevent fuse from blowing in error. Inrush current limiting power ntc thermistor features Resin coated disk thermistor with uninsulated lead-wires. Suitable for both ac and dc circuits up to a voltage of 265 v(rms). Wide range of resistance, current and dimension. Excellent mechanical strength. Suitable for pcb mounting.
