QCRQ series high and low voltage wound motor liquid resistance starterDetailed product description：

The QCRQ series high and low voltage wound motor liquid resistance starter is suitable for heavy-duty smooth soft starting of three-phase AC 50HZ, rated working voltage of 380V~10KV, and rated power of 75KW~10000KW wound AC asynchronous motors, especially for industrial and mining enterprises with unstable or low grid voltage.

Working principle of QCRQ series high and low voltage winding motor liquid resistance starter
In the rotor circuit of the controlled wound motor, a specially formulated electrolyte is serially connected as a resistor, and by adjusting the concentration of the electrolyte and changing the distance between the two plates, the resistance value of the serially connected resistor always meets the requirements of the motor's mechanical characteristics for the value of the serially connected resistor during the starting process, so that the motor can uniformly accelerate and start smoothly while obtaining the maximum starting torque and minimum starting current. At the end of the starting process, the electrical switch is short circuited to the rotor circuit.

Main performance characteristics
Soft start, low starting current Iq ≤ 1.3I (A);
Reduced the temperature rise during motor start-up, effectively extending the service life of the motor;
Smooth start-up process with no impact on mechanical equipment;
Can start continuously 5-10 times, with better starting performance than frequency sensitive starters;
The requirements for the power grid are not high, and it will not generate harmonics that affect the power grid;
Reliable and simple structure, easy installation and maintenance;
Good universality, suitable for soft starting of wound motors under any load conditions, especially suitable for heavy-duty starting;
It has multiple protection functions such as starting timeout, voltage loss, overtravel, and overtemperature;
When used in cold northern regions, the device comes with electric heating function.

Main technical parameters of QCRQ series high and low voltage wound motor liquid resistance starter

Starting current: Iq ≤ 1.3Ie (A)
Starting time: 10~60s, pre-set, adjustable on site;
Number of starts: 5-10 consecutive starts;
Normal operating temperature of electro-hydraulic system: 5-70 ° C;
Shell protection level: IP20, IP30.

QCRQ series high and low voltage winding motor liquid resistance starter model description

Product Specifications

model	Suitable motor (KW)	Overall dimensions			installation dimensions
		A	B	C	D	E
QCRQ-0.2	Below 200	eight hundred	seven hundred and sixty	one thousand and eight hundred	six hundred and eighty	six hundred and forty
QCRQ-0.4	200-380	eight hundred	seven hundred and sixty	two thousand	six hundred and eighty	six hundred and forty
QCRQ-0.6	380-630	nine hundred	eight hundred and sixty	two thousand	seven hundred and eighty	seven hundred and forty
QCRQ-1	630-1250	one thousand	nine hundred and sixty	two thousand	nine hundred and sixty	eight hundred and thirty-five
QCRQ-2	1250-2000	one thousand and two hundred	nine hundred and sixty	two thousand	one thousand and eighty	eight hundred and thirty-five
QCRQ-3	2000-3000	one thousand and three hundred	one thousand and sixty	two thousand and two hundred	one thousand and two hundred	nine hundred and thirty-five
QCRQ-4	3000-4000	one thousand and three hundred	one thousand two hundred and sixty	two thousand and two hundred	one thousand two hundred and fifty	one thousand one hundred and fifty
QCRQ-5	4000-5000	one thousand and four hundred	one thousand two hundred and sixty	two thousand and two hundred	one thousand three hundred and fifty	one thousand one hundred and fifty
QCRQ-8	5000-8000	one thousand and eight hundred	one thousand four hundred and sixty	two thousand and two hundred	one thousand seven hundred and fifty	one thousand three hundred and fifty
QCRQ-10	8000-10000	two thousand	one thousand six hundred and sixty	two thousand and two hundred	one thousand nine hundred and fifty	one thousand three hundred and fifty

One time scheme diagram

Environmental conditions for use

Environmental temperature: -40-50 ° C;
Relative humidity:<90%;
Altitude:<2000m (for altitudes above 2000m, special designs can be made according to specific working conditions);
Ground inclination: not greater than 5 °;
The installation location is free from fire, explosion hazards, chemical corrosion, and severe vibrations;
Note: If there are special usage conditions, please declare and negotiate when placing an order.