Basic Info.
Mathematical Model
Linear
Function
Automatic Control
Certification
CCC, ISO: 9001, CE
Product Description
WYQ8 series totally-enclosed liquid starter
User's manual
The operation elements displayed on the cabinet door:
1, To ensure the normal usage of the equipment, connect the relative chain signal in chain as the requirement in the diagram.
2, The emergency stop button (E-STOP) can connect directly to the trip interface of the motor main switchgear after it connecting to the trip chain signal. This signal is a force signal. The host will stop if press this button.
3, The red liquid level low (LIQUID LOW) indicating light reminds the user of the liquid resistance level. Inspect the liquid level when this light is on (with fault light constantly on).
4, Fault indicating light (FAULT) constantly on reminds the user there is fault inside the cabinet. The starter can persist operating with fault in some circs, but it can not start again after the motor stops if the fault is still not fixed.
5, The ready indicating light constantly on means the inner of the cabinet is in ready state and the upper limiting position of the electrode plate, the temperature of the electrolyte, the liquid level and the heat relay are all normal. Operate the circulating pump at this time is allowable (PUMP CONTROL).
6, Energy storage (SPRING CHARGED) indicating light indicates that the switch-on spring of the vacuum circuit breaker is stored and it can fulfill switch-on operation (no indication if the rotor selects contactor short circuit).
7, Judge if it is local cabinet operation or DCS operates the circulating pump according to the position of SA1(LOCAL/DCS)changeover switch. If it is local cabinet operates the circulating pump, press the pump control button (PUMP CONTROL), and the pump will start immediately. The pump will stop after operating for 3 minutes. The pump will stop immediately PLC inspect that the heat relay operates and the fault light (FAULT) will be constantly on. Please inspect if the pump is overload (the control signal of the pump is impulse signal).
8, After the circulating pump finishes circulating normally, the start allowable light will be on. The starter at this time is with all conditions (start allowable signal gives out signal for 30 minutes accumulatively after the circulating pump stopping). If the host doesn't fulfill the start order, the circulating pimp needs to be drove after the "start allowable" disappears and the starter will switch to start allowable state after finish circulating.
9, After the main motor starting, the electrode plates will move down with the drive of the transmission motor and the start light (STARTING) will be on. The motor switchgear will switch off if motor overload, excess temperature of the cabinet, overtime, too low liquid level and other faults happen.
10,When the electrode plates moves to the lower part, if PLC inspect that SX1 operates, rotor star point short circuit order will be sent out. The motor has finished starting and enter operating state at this time and the operating indicating light (RUNNING) will be on.
11,After the main motor stops, the electrode plates will reset (moves up) right now and the reset indicating light (RESET) on the cabinet door will be on.
12,A temperature meter (unit: ºC) is installed on each door of the control element room, which is used for measuring the temperature of the electrolyte. The normal temperature range of the electrolyte is 0-80ºC. PLC will sends out fault alarm order if the temperature exceeds the upper limiting set value.
13,There are two spare buttons on the cabinet door. The use can use them according to actual conditions after correct connection.
14,Please connect DP interface to Profibus-DP network according to actual conditions. The user set the address themselves.
15, Motor load and the actual condition of the electric network effect the starting time of the motor. Please modify the starting time of the motor according to the actual conditions.
Installation and debugging methods:
1, Install the cabinet with the corresponding motor according to the nameplate of the cabinet. Connect the relative cables as the requirements and place the grounding point in the ground mat of the factory by grounding line to guarantee the grounding is subject to the specifications of the construction.
2, Make the electrolyte
K≈U2e/(I2e*√3)
R2e≈K/n
n indicates the type of the load
When the load is fan (centrifugation/ axial flow), n=1
When the load is ball mill or upright mill, n=1.4
When the load is the crusher, n=1.8
Config the resistance by Ohm's law
As the fig.:R2E= (V/A)/3
Note:Please ensure that the electrode plates are in initial position when mix the resistance and the water level is proper. Do not add any impurity into the tank.
3, Monitor the moving direction of the electrode plates after powering on. if the electrode plates move down and the reset indicating light is on, modify the phase and frequency of U2,V2,W2. After adjust the phase and frequency of the transmission motor, select the position of changeover switch SA1 after the electrode plates return to upper limiting position. In the condition that local cabinet drives the circulating pump, inspect if the actual operating direction of the circulating pump is in accordance with the direction required. If not, modify the phase and frequency of U4,V4,W4.
4, Circulate the electrolyte totally by the circulating pump after powering on. If allowed, inspect if all the chains of the equipment meet the requirements.
WYQ8 series totally-enclosed liquid starter
1,Design
1.1 The shell
The shell of WYQ8 series totally-enclosed liquid starter is weld by high quality thickening armor plate firstly, and then it is sprayed up after acidwashing and parkering.
1.2 The tank
The tank is weld by high quality polypropylene board with totally-enclosed structure. It has the functions of leakproofing and anti-fast evaporation. The tank is divided equally into three parts corresponding to A, B and C phase.
1.3 Electrodes (see fig. 1)
The electrodes are composed of three moving and fixed electrodes plates (no. 1, 2) which are 4mm copper plates copper brazed with the upright copper plates. Three moving electrode plates are hanging on the crane (no. 5) through the buffer unit (no. 4) after short circuited by the short circuit copper plates (no. 3). Three fixed electrode plates are fixed on the mounted plate (no.6) at the bottom of the corresponding tank unit by stainless steel screw. The upright leading out copper plates (no. 7) are connected to the short circuit contactor (circuit breaker for WYQ8-3 above) after fetching out from the sealing covers (no.8) of the tank cover (no.8).
1.4 Electrode drive (see fig. 2)
The worm gear lifter (no.2) on the channel steel (no.1) on the roof of the cabinet is connected to its lower screw of the lifting insulating bar (no.4) by the lifting bar (no.3). The lower of the insulating bar is connected to the crane (no.5) by the jointing sleeve (no.6). When the drive motor (no.7) of the worm gear lifter operates, the lifting bar makes the crane move up and down through the insulating lifting bar, in order to drive three moving electrode plates (no.8) move up and down. Thus the distance between the fixed and moving electrode plates can be modified.
1.5 Short circuit contactor (circuit breaker for WYQ8-3 above)
Short circuit contactor (circuit breaker for WYQ8-3 above) is installed in its installation box on the right of the shell inside the cabinet. One side of it is connected to the leading out copper plate of the fixing electrode, and it's the other side is three-phase short circuit.
1.6 The control box
The control box is installed on the short circuit box, in which there are PLC, auxiliary relay and other secondary elements. Indicator light, control buttons and electric point thermometer are on its panel.
1.7 Circulating system (see fig.3)
This series totally-enclosed liquid starter has perfect self-circulating system which is composed of 32CQ-25 magnetic drive pump (no.01), pump inlet stainless steel circulating pipe (no.02), pump inlet tee bend (no.3), pump inlet ball valve (no.04), pump outlet stainless steel circulating pipe (no.05), pump outlet ball valve (no.06), pump inlet tee bend (no.7), inner PP circulating pipe (no.08) and so on. When the circulating system starts, the magnetic drive pump (no.01) draws out the cooling electrolyte through the stainless steel circulating pipe (no.02), pump inlet tee bend (no.3) and pump inlet ball valve (no.04). And then the cooling electrolyte is transmitted to the bottom of the tank through the magnetic drive pump (no.01), pump outlet stainless steel circulating pipe (no.05), pump outlet ball valve (no.06), pump inlet tee bend (no.7) and inner PP circulating pipe (no.08), in order to make the cooling electrolyte and warm electrolyte become contra-flow to lower the temperature of the electrolyte. Thus, continuous starting within short time can be fulfilled.
2,Installation
After this series liquid starter arrives at the user's field, place it on the installation basis prepared before installation. Fix the bed channel steel with the installation basis and ground reliably.
3,Precautions before debugging
3.1,The sealing board (no.1) at the top of the cabinet shall be replaced by the head cover (no.2) in the spare part case. (See fig.4) But WYQ8-0.6 is the exception.
3.2,Inspect if the fastening bolts in the flange joints of the circulating pipe are loose. If loose, fasten them to avoid leakage;
3.3,Inspect if the lubricating oil on the worm gear lifter bar is adequate. Enough lubricating oil shall be prepared before debugging.
4,Maintenance
The following inspection and maintenance descriptions are good for WYQ8 to perform perfectly.
4.1 Inspect the followings half a year:
4.1.1 Inspect the water level in the tank. Before the level is lower than the shortest liquid level inspection bar in the tank, add water lost by evaporation.
4.1.2 Inspect if the bar of the lifter and the bearing of the worm gear are in good lubricating condition;
4.1.3 Inspect the connecting plate of the contactor (or circuit breaker). Replace it if necessary;
4.1.4 Inspect if the fastening screws are loose. Fasten them if necessary.
4.2 Inspect the followings annually:
Besides the items in 4.1, the followings have to be inspected:
4.2.1 Inspect if the lifter in the tank is reliable;
4.2.2 Inspect if the moving electrode plates in the tank and the buffer of the lifter can move freely.
Do clean work if dirty.
4.3 Overhaul every 24 months:
4.3.1 Clean the inner side of the tank thoroughly;
4.3.2 Inspect the moving and fixed electrode plates thoroughly and wash them;
4.3.3 Inspect the circulating pipe thoroughly.
5,Disassembly (see fig.5)
When the tank has to be removed out to inspect because of the starter trouble, open three water valves (no.1) at the bottom of the tank to release the electrolyte, and then disassembly as the following steps:
a, Unlock all locks on the front sealing board (no.2) by special keys and remove the front sealing board to a proper place;
b, Remove the jointing sleeve (no.4) on the upper part of the insulating lifter bar (no.3) and the connecting screws on the lower part of the flange plate (no.6) of the lifting bar (no.5) so that the insulating lifter bar can drive the crane (no.6) and the moving electrode plate (no.8) slowly down to the bottom of the tank;
c, Remove the leading out plates (no.10) of the moving electrode plates above the sealing covers (no.9) and the connecting screws of the short circuit contactor (circuit breaker for WYQ8-3 above) (no.11);
d, Remove the fastening screws among the positive stop (no.12), left and right stop (no.13) and the strengthening rib (no.14);
e, Remove the flange plate (no. 15) of the water releasing valve and unfix the connecting screws between the flange and the water releasing flange at the bottom of the tank;
f, Remove the flange plate (no. 16) at the inlet and outlet entrances of the circulating pump and unfix the connecting screws between the flange and the water releasing flange behind the tank;
g, Move the tank out from the front of the cabinet and overhaul it.
