Liquid Starter

WYQ series of liquid resistor starter

■ Range of application

It is applicable to the heavy load smooth soft starting of coiling ac asynchronous motor that is of three phase AC 50hz, rated operation voltage of 380V~10KV, rated power of 75KW~10000kw, especially in industrial and mining establishments with unstable or low voltage.

■ Operation principle

Special made electrolyte is put in the rotor loop of the controlled coil motor as the resistor , and by adjusting the density of the electrolyte and the distance between the two plate electrodes to ensure that the input resistance can meet the requirements of the motor’s mechanic characteristics in the starting process, so as to make the motor rise speed equally with maximum starting torque and minimum starting current , and make a smooth starting , when starting is over , the electric switch shorts the rotor loop.

■ Main performance and characteristics

* Soft starting , small starting current: Iq ≤1.3Ie(A)

* reduces motor starting temperature rise, effectively lengthened the motor’s service life:

* smooth starting, no shock to the mechanical equipments:

* can make continuous starting for 5~10 times, starting performance is better than frequency sensitive starter;

* low requirement for the power grid, no harmonic wave to affect the power grid;

* structure is reliable, simple .convenient for installation and maintenance;

* good uniformity , applicable to coiling motor soft starting under and load situation , specially suitable for heavy load starting;

* has multiple protection function like starting overtime, over stroke and over temperature

* when used in cold areas of the north, the equipments is equipped the self-heating function.

■ Main technical parameters

l starting initial current :Iq≤1.3Ie(A)

l starting times:10-60s, presetting , adjustable on site

l starting times: continuous starting 5~10 times

l normal operation temperature of electro hydraulic:

l Shell protection grade: IP20, IP30

■ Standards of conformity

l Low voltage whole set switch equipments and control equipments GB7521.1-1997IEC439-1:1992

l WYQ liquid resistor starter Q/XWZ2-2000

■ Environmental conditions for use

l environmental temperature:-40~50℃

l relative humidity:≤90%

l absolute altitude:≤2000m(when altitude is above2000m, it shall be specially designed according to the specific working conditions )

l ground gradient shall not exceed 5°

l installation places shall be free of the risks of fire, explosion , chemical erosion and excessive vibration

l note: if there is any use condition, please state and negotiate with us when making orders.

Quick mode selection

注

Note:0.2~1 series is mainly designed for motors below 2000KW, with rotor current as mode selection reference, which is regards as starter’s adaptive motor maximum current ……………..

■ Notice for order

The following materials shall be provided when making orders

l motor type: rated power. rated rotor current. rotor voltage. rated rotation rate:

l load characteristics pulled by the motor (operating condition statement)

l cabinet surface color:

l if users have any special requirement. Please negotiate with us when making orders.

■ Reference dimensions for installation

External dimensions and installation dimensions of the WYQ series of liquid resistor starter see following table.

TYPE	External dimension (MM)			Installation reference dimension (mm)
	A	B	C	D	E
WYQ6-0.2	700	710	1800	600	585
WYQ6-0.4.0.6	800	760	2000	680	640
WYQ6-1	1060	960	2000	960	835
WYQ6-2	1200	960	2000	960	835
WYQ6-3	1300	1060	2200	1200	935
WYQ6-4	1300	1260	2200	1250	1150
WYQ6-5	1400	1260	2200	1350	1150
WYQ6-8	1800	1460	2200	1750	1350
WYQ6-10	2000	1660	2200	1950	1550

Note: due to the upgrading of products, external and installation dimensions may be changing , please take the specific products as the standard.