Soft-Start Switchboard for ESP Unit

Date: 07 Aug 2009
The soft-start Switchboard is an advanced product that is different from conventional one. The soft-start Switchboard adopts the method of gradually voltage increasing that avoids direct start-up and the problem of mechanical and electric pressure. It can lengthen mechanical life of the ESP-unit and reduce maintenance, which can make it more economic and safe to meet starting requirement for ESP unit.
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. English 16-character 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
5. 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.
6. 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.
7. Grounding automatic-alarming function
 
Contact information:
Company:
Address:
OrientSun Electric Co., Ltd
No.69Dengzhou Road,Dongying [257091]
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