---

The battery pack power widely used in fields such as electricity, chemical engineering, metallurgy, casting, and papermaking are all DC motor drive systems. In the event of a power outage, in order to maintain water cooling and lubricating oil pressure, it is necessary to quickly activate the backup power supply. The starting performance, operational stability, and reliability requirements of this type of motor are particularly high. At present, most traditional starting devices are used, which control the start and stop of DC motors by switching resistors through contactors. This control method will generate significant surge current to the DC power supply and motor during resistor switching. This not only affects the lifespan of the DC motor, but also has a significant impact on the electromechanical protection system. In severe cases, it can cause relay protection and automatic devices to malfunction, leading to accidents. In addition, when the oil pump motor is shut down, a contactor is used to disconnect the power supply of the DC motor. The inductive load characteristics of the motor can cause serious arcing between the contactor contacts. Due to the long duration of the arcing, it is easy to cause contact burning and bonding, resulting in a large maintenance workload and low reliability. Therefore, to achieveDC oil pumpThe smooth and stepless soft start and soft stop of motors are of great significance for the reliable switching of DC backup systems under various operating conditions.

Developed by Shaanxi Yilian ElectricYL-ZK series intelligent DC oil pump control cabinetIt's aimed atNew generation product for lubrication system design of power plant generators.The DC oil pump control cabinet is mainly suitable for intelligent control of start stop of various types of DC motors.Mainly used for controlling various DC oil pumps in thermal power plantsSuch as main engine, small engine DC lubricating oil pump, hydrogen side, air side sealing oil pump, etc. It can also be widely applied to the water pump control of the water cooling control system for chemical enterprise reaction vessels; Water pump control for the water cooling system of metallurgical and casting induction furnaces. It can achieve smooth soft start operation of DC motors.

In thermal power plants, in order to ensure the safe operation of the main and small machines, in addition to the AC lubricating oil pumps for the main and small machines, there are also DC lubricating oil pumps for the main and small machines as backup oil pumps, commonly referred to as accidentsDC oil pumpPowered by a reliable DC battery pack, it is the guarantee for safe shutdown of the steam turbine in case of accidents. The reason for using DC power supply is because the battery pack provides it with working power and high reliability. However, due to the starting characteristics and outdated control methods of DC motors, their operation is extremely unreliable and can cause significant impact on the entire DC system, thereby causing great damage to the normal operation of the entire secondary circuit.

---

GB/T156 "Standard Voltage"

　→GB/T2900 "Electrotechnical Terminology"
　→GB4208 "Degrees of Protection Provided by Enclosures" (IP Marking)
　→GB24235 "Environmental Testing Regulations for Electrical and Electronic Products"
　→GB/T191 "Packaging, storage and transportation pictorial markings"
　→GB/T11021 "Classification of Heat Resistance of Electrical Insulation"
　→GB7251 "Low Voltage Switchgear and Control Equipment"
　→GB/T10233 "Basic Test Methods for Low Voltage Switchgear and Electrical Control Equipment"
　→GB50150 "Standard for Hand over Test of Electrical Equipment in Electrical Equipment Installation Engineering"
　→CECS49 "Acceptance Specification for Low Voltage Switchgear Equipment"

---

Rated voltage: DC220V ± 10% or DC110V ± 10%
　►Rated power: 1.5kW~75kW
　►Starting current: 120% of rated current
　►Starting time: 1s-20s can be set
　►Communication interface: standard RS485 port
　►Cabinet material: 2.0 cold-rolled steel plate or 304 stainless steel

---

YL-ZK seriesDC oil pump controldeviceIt is a high-tech product that integrates modern power electronics technology, PWM technology, and PLC control. It can achieve stepless smooth soft starting of DC motors, without sudden changes in current, and the operation of the DC system is not affected;DC oil pump control cabinetBy using high-power power electronic devices and IGBT soft stop, the occurrence of DC contactor contact adhesion is eliminated; Chinese human-machine interface operation and information display.

　　DC oil pump control cabinetAdopting a new pulse width modulation method to control the conduction and turn off of high-power semiconductor IGBT as the main control device of power electronics, with PLC as the core control management, and using BUCK voltage reduction circuit to linearly regulate the DC voltage. Raise the DC voltage from 0V to the rated voltage within the set time to achieve reliable soft start of the DC motor. Conversely, when stopping, slowly reduce the rated voltage to 0V to achieve soft stop function.

---

● Based on modern power electronics technology, PWM control is used to achieve stepless control of DC motors, which provides a soft stop without impact to the system and solves the problem of contactor contact burning and sticking in traditional control systems

● No contactor bypass, avoiding the phenomenon of contact arcing, burning and bonding when the bypass contactor stops

● Siemens PLC direct control, without microcontrollers or other microprocessors, avoids control instability

● Without bypass contactors or microprocessors such as microcontrollers, the system is stable, reliable, and requires minimal maintenance

● Adopting Swiss imported driver CONCOPT products to ensure stable and reliable operation of IGBT

● German Infineon IGBT modules form a dual circuit, one in use and one hot standby, making the system more stable and reliable

● Start stop control of DC motors up to 75kW

● Optional installation of resistor starting unit, always prepared

● The optional control cabinet air conditioning system ensures the temperature and humidity of the system under more stringent usage conditions.

---

Width * Depth * Height=800 * 400 * 1600 (unit: mm)
This size is the standard configuration size of 55kW and below. Other customized versions may vary depending on the actual situation, and the actual project design shall prevail.

---

---

---

Environmental temperature: -25 ℃ to+55 ℃

Relative humidity: ≤ 95% RH

Equipment installation: The inclination with respect to the vertical plane shall not exceed 5 degrees.

There is no conductive medium dust around the installation site, which can cause corrosive gases, mold, etc. that can damage metal and insulation.

When the user's usage conditions exceed the scope of this instruction, customization can be made according to the actual situation on site.

---

Serial Number	project	Shaanxi Yilian Electric	Manufacturers of the same type
1	hot standby	One main circuit for use and one hot standby, dual circuit design. Once a fault occurs in the working circuit, it switches to the backup circuit without disturbance, ensuring the stability and continuity of the equipment.	No backup circuit. Once the main circuit fails, the oil pump cannot start.
2	SiemensPLCAs the main controller	SiemensPLCAs the main controller, forIGBTperformPWMDirect control, eliminating the need for a microcontroller orDSPThe control board reduces the failure rate and increases reliability.	Single chip microcontroller orDSPcontrolIGBT, self-made microcontroller orDSPThe control board, design, and process are not as mature and stable as well-known manufacturers. Causing high failure rate, complex maintenance, and high maintenance costs.
3	bypass	usePLCcontrolIGBTStart up to the operating state without the need for bypass units, reducing the failure rate.	Using a bypass relay, when the startup is complete, switch to the bypass unit. Adding a bypass unit increases the number of fault points.
4	Voltage and current limiting	Due to the adoption ofPLCdirect controlIGBTTherefore, closed-loop control of the output voltage can be achieved through the transmitter, ensuring that the output voltage and current are within a safe range.	After starting, direct bypass cannot achieve closed-loop control.
5	Main core components	Main circuit breaker,IGBT，PLCRelays and other components are imported brands,IGBTAdopting original imported products to ensure reliability.	Domestic brand

---

---

Provide the rated power and rated operating voltage of the DC motor
● Indicate whether the control cabinet is wall mounted or floor standing
● Indicate the processing material and cabinet color of the control cabinet
Special case control can be customized according to the user's specific requirements
If remote communication is required, please provide the interface type and communication protocol

---

The company is responsible for free debugging and on-site installation guidance of the equipment ordered by the user until it runs normally;
The company provides free training services for users on basic operations and daily maintenance at the installation site;
The company shall provide warranty services for the equipment of the project in accordance with its standard warranty regulations from the date of normal operation of the equipment;
Equipment outside the warranty period will only be charged for faulty parts at cost price, with no labor costs;
The company's service response time is within 2 hours, with on-site arrival within 1 working day within Shaanxi Province and 2 working days for users from other provinces;
The company will provide free system and hardware equipment upgrades and technical consultation;
The company will regularlyPresenting product technology related materials to users, visiting them in person or by phone periodically to understand the operation of the system and equipment,
Resolve user issues on-site.

---

　Shaanxi Yilian Electric Manufacturer specializes in producing microcomputersDC oil pump control cabinetIntelligent DC oil pump motor control cabinet, with a wide range of product options and manufacturer prices. Professional electrical testing for 10 years. Looking for microcomputer based DC oil pump control cabinets and DC oil pump motor control cabinets, choose Yilian Electric to create high-quality electric products.