YDQ series liquid resistance starterDetailed product description：

Application scope:
The YDQ series liquid resistance starter (hereinafter referred to as the starter) is a new type of starter developed to improve the starting performance of large and medium-sized wound AC asynchronous motors. It overcomes the problems of high impact current, difficult starting, and inconvenient operation of frequency sensitive resistance starters, and is suitable for heavy-duty starting of motors such as ball mills, air compressors, crushers, large fans, and large water pumps in industrial sectors such as building materials, metallurgy, chemical industry, and mining. It is an ideal substitute for frequency sensitive starters and metal resistance starters.
This product adopts patented technology.

Model Description:

The meaning of auxiliary code:
W multi-point temperature measurement and sound and light alarm function
J equipped with automatic camera transfer function
K low-voltage motor primary circuit
Short circuit contactor with two contactors in parallel
B Short circuit contactor with vacuum contactor
PC adopts programmable controller
Each auxiliary code can be combined to complete the corresponding function.

Basic principle:
This starter gradually reduces the distance between two parallel plates in the conductive liquid through a mechanical transmission device until it reaches zero, causing the resistance value in the motor rotor circuit to gradually decrease smoothly from maximum to zero, and gradually smoothing the motor speed to reach the rated speed. Thus achieving smooth starting of heavy-duty wound large and medium-sized motors.  
Technical performance characteristics:
1. The starting current is small and constant, with no impact on the power grid; The starting current should not exceed 1.3 times the rated current, thus reducing the requirement for transformer capacity during motor overload starting and minimizing one-time investment;
2. Smooth starting reduces the impact on mechanical equipment and can extend the lifespan of mechanical equipment and motors by about 30%;
3. Large heat capacity, can be started continuously 5-10 times;
4. Low voltage can still start, as long as the grid voltage can ensure the normal operation of the motor, smooth starting can be guaranteed;
5. The structure is simple, easy to maintain, and the reliability is superior to frequency sensitive and oil immersed variable resistors.

model	Applicable motor capacity (KW)	Start time (S)	Structural form and weight
YDQ5-0.2 series	Below 200	20~60	Integrated 200kg
YDQ5-0.4 series	Below 400	20~60	Integrated 350kg
YDQ5-0.6 series	Below 600	20~60	Integrated 450kg
YDQ3-0.6 series			Split 600kg
YDQ5-1 series	Below 2000	20~60	Integrated 550kg
YDQ3-1 series			Split 700kg
YDQ5-2 series	Below 3000	20~60	Integrated 600kg
YDQ3-2 series			Split 750kg
YDQ5-3 series	Below 4000	20~60	Integrated 720kg
YDQ3-3 series			Split 840kg
YDQ5-4 series	Below 5000	20~60	Integrated 820kg
YDQ3-4 series			Split 970kg
YDQ5-6 series	Below 7000	20~60	Integrated 1050kg
YDQ3-6 series			Split 1200kg

Normal working conditions:
The upper limit of environmental temperature shall not exceed 50 ℃, and the lower limit shall not be lower than -5 ℃; Relative humidity not exceeding 85%; The altitude should not exceed 2000M; it should be placed indoors without severe vibration and impact, with a vertical inclination of no more than 5 °, and without fire or explosion hazards; No conductive dust or corrosive gases from Egypt are allowed; The power supply adopts three-phase four wire 380/220V 20A, and the voltage fluctuation must be ensured within ± 15% of the rated voltage.
Note: When the ambient temperature remains below 0 ℃ for a long time, a heater needs to be installed. Users should specify this when placing an order

Usage and maintenance:
1. There are two spare switches on the starter control cabinet panel:
Parking button: can be used for emergency parking on site;
Start button: can be used for on-site starting according to user needs.
2. Before starting the equipment, power must be supplied to the control cabinet, and it can only be started when the "allow start" signal light is on.
3. The electrolyte is usually replaced every 4-5 years, and the electrode plate and insulation box are cleaned at the same time. The electrode plate can be cleaned by first corroding the conductive surface with dilute hydrochloric acid and then rinsing with clean water. The insulation box can be cleaned by first rinsing with clean water and then drying, and then coated with epoxy resin several times (in general, it is best not to disassemble and clean, and vibration and impact should be avoided during disassembly to prevent the box from breaking).

Appearance and installation dimensions:
This starter is a cabinet structure, and the protection level can reach IP43 according to user requirements. According to different auxiliary functions, there are two types: integrated and split, and the structural form can be configured according to user requirements. The basic structural form and external dimensions of the split type are shown in Figure 2 and Table 2; The basic structural form and external dimensions of the integration are shown in Figure 3 and Table 3.

Table 2 YDQ3 Series Appearance and Installation Dimensions

model

Appearance of control cabinet Size mm

Control cabinet installation Size mm

Appearance of resistor cabinet Size mm

Installation of resistance cabinet Size mm

A1

B1

C1

E1

F1

Φ

A

B

C

E

F

Φ

YDQ3-0.6 series

seven hundred

six hundred

two thousand

five hundred and fifty

four hundred and fifty

nine hundred

eight hundred

two thousand

seven hundred and fifty

seven hundred and ten

YDQ3-1 series

seven hundred

six hundred

two thousand

five hundred and fifty

four hundred and fifty

sixteen

one thousand

nine hundred

two thousand

eight hundred and fifty

eight hundred and ten

sixteen

YDQ3-2 series

seven hundred

six hundred

two thousand

five hundred and fifty

four hundred and fifty

one thousand

nine hundred

two thousand

eight hundred and fifty

eight hundred and ten

YDQ3-3 series

eight hundred

six hundred

two thousand

six hundred and fifty

four hundred and fifty

one thousand and two hundred

one thousand and one hundred

two thousand and two hundred

one thousand and fifty

one thousand and ten

Table 3 YDQ5- Series Appearance and Installation Dimensions

model	Dimensions mm			Installation size mm
	A	B	C	E	F	Φ
YDQ5-0.2 series	seven hundred	seven hundred	one thousand and eight hundred	five hundred and fifty	six hundred and ten	sixteen
YDQ5-0.4 series	eight hundred	eight hundred	two thousand	six hundred and fifty	seven hundred and ten	sixteen
YDQ5-0.6 series	nine hundred	eight hundred	two thousand	seven hundred and fifty	seven hundred and ten	sixteen
YDQ5-1 series	one thousand	nine hundred	two thousand	eight hundred and fifty	eight hundred and ten	sixteen
YDQ5-2 series	one thousand and two hundred	one thousand and one hundred	two thousand	one thousand and fifty	one thousand and ten	sixteen
YDQ5-3 series	one thousand and four hundred	one thousand two hundred and sixty	two thousand and two hundred	one thousand two hundred and fifty	one thousand one hundred and twenty	sixteen
YDQ5-4 series	1500*	one thousand and five hundred	two thousand five hundred and fifty	1350*	one thousand and two hundred	sixteen
YDQ5-6 series	2600*	one thousand and five hundred	two thousand five hundred and fifty	2450*	one thousand and two hundred	sixteen