High Voltage Capacitor

Unpacking for check
WVP series static advancer has passed the strict quality inspection and performance testing before ex-factory. After it arrives at the installation field, please check whether there is any damage due to careless transportation, and whether the model of the product conforms to the one ordered before unpacking. As the product is continuously upgraded, there may be several parts or words of the equipment and product, which do not conform to the advertising materials; please consult us if the equipment meets with such problems. After opening the box, check if there are qualified mark, product description, product warranty manual and packing list in the document box in the front cabinet door of the equipment. In case of any problem, please contact us or the supplier..
1. Check if the information attached to the equipment is complete and in line with the content of packing list
of the equipment.
2. Check the nameplate on the cabinet body to confirm that the equipment is in line with the ordered equipment


  WVP2 series static advancer
                   WVP 2 - 600G type
Motor Power: 240 KW           Size: W900*D800*H2000
Motor Rotor Current 442A        N.W.: 450KG
Product NO: 20908474           Production Date: Aug.,2009
Application: Rolling mill         Working stand:Q/XWZ11
HUBEI WORLDWIDE ELECTRIC GROUP CO., LTD
Add: #1 Worldwide Road Xiangyang City, Hubei Province

3. Check whether the spare parts and components are damaged or lost. The spare parts and components shall be governed by the procurement contract.



















Usage Condition



Applicable standards
Electronic devices equipped with electronic control equipment  GB3797-1989
Rated Voltage
3-phase AC 380V+10%
Controlling Power
required to provide with three-phase four-wire power supply
frequency
50Hz+2%
Motor
75KW~10000KW wound rotor asynchronous motor
Structure Type
Cabinet
Protection class
IP20,IP30
Environment temperature
-40ºC ~ +50ºC
Relative humidity
Not more than 90%
Working altitude
Not more than 2000mm(If more than 2000mm, it can be specially designed according to the specific conditions
Ventilation
There should be no other objects 500 mm above the cabinet, for example, a ditch is closed, the static advancer should be 100 mm overhead.
Safety requirement
There should be no fire, no explosion, no chemical corrosion and severe vibration

Safety warnings

Warning!
Be free from raff handling or installation, rain and electromagnetic interference..

Warning!
Prevent the children and the public from touching or approaching to this equipment. This equipment, with dangerous voltage, controls the dangerous rotary mechanism          

Warning!
This equipment shall be only used for the purpose specified by the manufacturer; any modification without authorization or operation not conforming to the regulations of    
this manual will result in severe personal injury and other injuries.      

Warning!
Please read the installation operation and safety instructions of maintenance in this manual carefully
before operating this equipment.

I. General
In China, the electric energy consumed by motors takes up 60%~68% of all industrial energy consumption. Reactive consumption caused by inductive load like the motor is the main source of reactive consumption of electric network; however, large and medium motors are the main power equipments used in industrial and mining enterprises. Thus, how to reduce the reactive consumption caused by large and medium size motors is the key to energy saving and consumption reduction of many industrial and mining enterprises.
Meanwhile, because most of the motor load are not constant , the load changes very complexly, and even loads mutations, such as rolling machine and punching machine in steelworks, defibrator in wood industry, tearing machine in sugar industry and crusher machine in mining .In this case, if we use a capacitor for reactive power compensation, it will make the compensation over or deficient, because capacitor compensation is only reactive compensation for electric network except the motor, which can reduces the reactive transmission amount on the electric network, but operation parameters of the motor itself like the current of the motor, power factor and so on have no change at all. If capacitor compensation is taken in that service condition, the compensation amount can't change when the load of the motor changes, thus over compensation or deficient compensation will happen and the using reliability of the capacitor will easily be reduced because the sudden variety of the motor current and burst can even happen. If ordinary static advancer is taken, the compensation will be over or deficient too, because the ordinary advancer even can't be normally used because of too heavy or too low load.
Scientific research institutions both aboard and at home always take the compensation of load variety service condition as a difficult problem to tackle, but with quite little result. Our company organized researchers developed the static advancer called WVP used in the situation of load variety during two years on the basis of the research and application of reactive power compensation for years. It successfully solves the difficult problem of reactive power compensation in load variety service condition.
WVP series static advancer is also different from self-excitation (rotated) advancer. WVP series static advancer adopts advanced alternating frequency technology and silicon controlled control technology, which can track the running state of the motor and changes the relative parameter automatically to obtain a perfect effect which cannot be done by self-excitation advancer. Furthermore, WVP series static advancer overcomes radically the defects of particular no dustproof, short lifespan, frequent maintenance of "commutator" structure of self-excitation advancer. It has no rotatable parts of the advancer mechanism, and it is dustproof, highly reliable, convenient for maintenance and with long service lifespan, which is an ideal high-technical product to replace self-excitation advancer.
WVP series static advancer is widely used for the on-site compensation of large and medium wound asynchronous motor in the fields of cement, chemical industry, wood, sugar, iron and steel, metallurgy, mining and so on.


II. Operation principle
WVP series of static advancer is connected in the rotor loop, judging the motor operation status by connecting motor operating current, voltage signal, and treat this information and the rotor current signal from rotor current sensor as well as the synchronizing signal from the power-frequency voltage in the SCM at the same time, adjust the compensation amount automatically according to the motor operation, realize auto compensation. timely gives trigger order enlarged by trigger board to control the alternative frequency device composed of 12 thyristors, in order to transform the power-frequency power-supply to the same frequency of rotor current and superimpose the advanced phase position on rotor loop of the motor. Change the phase relationship of rotor current and voltage, further change stator current and voltage phase relationship via magnetic field, so as to decrease power factor, and finally increase the motor power factor, decrease the stator current, so as to realize compensation



When the motor is running on load, its rotor current is I2e, and stator current is I1e. The vector diagram is shown as follows:

In the diagram:

U:voltage vector
I1:stator current vector
I2:rotor current vector
Im:field current vector
I1e:stator current rated vector
I2e:rotor current rated vector
Φ1:motor rated power factor angle   Φ2:power factor angle after compensating

From electro mechanics we know that field current Im can be obtained by Im=I1e-I2e,and Im also can be obtained from the vector diagram. After the electric potential of the static advancer superimposed on the rotor loop, the phase position of rotor current change to I2 in the diagram. The field current Im does no change because the load doesn't change. The stator current I1 now can be obtained according to I1=Im+I2 as the vector diagram shown above. From the diagram we can see that the power factor angle and the amplitude value of I1 are all smaller than that of I1e, which indicates the power factor of the motor increased and the stator current reduced.
Thus we can see the essential distinction between WVP series static advancer for reactive power compensation of the motor and the compensation of motor stator side parallel capacitor. The schematic diagrams of capacitor compensation and static advancer compensation are as follows:




In the diagram, the motor is equivalently simplified, andR1, X1 are resistance and inductance of the stator equivalent circuit of the motor; R2, X2 are resistance and inductance of the rotor equivalent circuit of the motor; C is the on-site compensated capacity; Uf is the equivalent circuit of the advancer; M is the wiring interface of the motor.
We can see from the diagram:The capacity compensation has the function of supplying the motor with reactive power and reducing the reactive input of the electric network by reducing the reactive power absorbed from the electric network by the motor to increase the power factor of the electric network. But the power consumption of the motor is not reduced and the stator current of the motor and its power factor doesn't change, that is, there is no change in the motor operating status. The function of static advancer compensation is adding an additional power supply in rotor loop and changing the phase position relationship between rotor current and rotor voltage, as well as changing the phase position relationship between stator current and stator voltage by magnetic field in order to reduce the reactive consumption of the motor. In this way, the status of motor running is changed, and the stator current reduced, thus the power factor of the electric network increased because the power factor of the motor itself is increased. In addition, reduction of the stator current lowers the copper loss of the motor, and increases the efficiency of the motor along with the temperature down of the motor. The overload capacity correspondingly is improved and the machine hour product is increased whereas single consumption is reduced.


III. Performance characteristic
WVP series static advancer is a high-tech result for reactive power on site compensation of large or medium wound motor, which applicable to75~10000kW wound asynchronous motor. Its excellent performance mainly shows in the following aspects:
1) Solve the difficult problem of on site compensation of load-variety motor, which fill the technology and product blank in this area.
2) Select advanced alternating frequency technology and micro control technology, high reliability.
3) Power factor of the motor up to 0.95~0.99,reactive power down below 60%.
4) stator current of the motor down to 10%~20%,wire loss, copper loss down to 20%-30%.
5) Rapid decline of temperature of the motor, great improvement in efficiency and overload capacity, prolonged service life of the motor.
6) Compensating performance is much higher than capacitance compensation: it not only improves the power factor of the circuit, but also improves the power factor of the motor itself.
7) All-round performance is better than rotated advancer: controlled by micro computer and it can automatically tracks the running state of the motor and automatically changes the relative parameter to get a perfect effect; high ability to adapt to the environment because it has no running parts.
8)  Compensation performance is much better than ordinary static phase advancer in variable load conditions: double CPU control, can adjust parameters timely according to the load changes, to achieve the purpose of dynamic compensation, make the power factor is always in the optimal state
9)  Friendly man-machine interface, easy operation, trouble automatically protecting function, maintenance without interrupting the production.

IV. Technical parameter
1. Performance index
l improve the power factor of the motor to 0.95 or above (or increase 20% or above)
l lower down the stator current of the motor to 10%~20%
l lower down the temperature rise of the motor winding to 10% or above
2. Input and output parameter
Input:
l signal of motor stator current(01,04): Standard 0~5A signal output from some phase current transformer.
l signal of motor stator voltage(05, 06): standard 100V signal output from two-phase wire-voltage via the voltage transformer for high voltage motor; standard 380V signal output from two-phase wire-voltage directly leading for low voltage motor
l Note: the signal of stator current of the motor shall not be the same with the one of the stator voltage. That is to say, the voltage signal shall only be B phase or C phase if the current signal is A phase.
l Start finished signal(W,111):Comes from the rotor short circuit signal of the starter, which usually supplied by star-point short circuit contactor. This signal is required to be kept and the contact capacity is 5A, 380V.
Output:
l Start allowable(ready)signal(121,123): This signal is used for the interlock of motor primary cabinet, which concatenates in the start button loop. The capacity of this contact is AC380, 5A.
l Trouble stop(trip)signal(125, 129)and(131,133):This signal is used for the interlock of motor primary cabinet, choosing one of the two according to the different state: (125, 129) is for circuit breaker kind electric trip switch. Parallel connect it with stop button;(131, 133) is for contactor kind electric trip switch. Concatenate it with stop button. and the contact capacity is 5A, 380V.

3. Service power supply
WVP series static advancer needs the external to supply three-phase four-wire power supply. The capacity is below:


type specification
capacity of power supply
sectional area of the cable
WVP2-400 type
15A
6 mm2
WVP2-600 type
20A
6 mm2
WVP2-800type
25A
6 mm2
WVP2-1000 type
30A
10 mm2
WVP2-1200 type
40A
10 mm2
WVP2-1400 type
50A
16mm2
WVP2-1600 type
50A
16 mm2




V Method of type selection
5.1. Instruction of model
  
W  VP  
        
                                       C: with PLC  Z: with DCS
                                       G (D):Suitable for high (low) voltage motor
                                       Max rotor current capacity
                                       Design number
                                       Changing load static advancer
                                       Worldwide

5.2 Model Table

Static advancer model
Adaptive motor parameters
Rated rotor current(A)
Rated rotor current(A)
Rated rotor current(A)
WVP2-400D
≤420
≤245
380
WVP2-400G
≤420
≤245
≥3000
WVP2-600D
420~560
245~570
380
WVP2-600G
420~560
245~570
≥3000
WVP2-800D
560~750
570~1250
380
WVP2-800G
560~750
570~1250
≥3000
WVP2-1000G
800~900
1250~2500
≥3000
WVP2-1200G
900~1100
1250~2500
≥3000
WVP2-1400G
1100~1300
2500~4000
≥3000
WVP2-1600G
1300~1500
2500~4000
≥3000
WVP2-1800G
1500~1700
2500~4000
≥3000
WVP2-2000G
1700~1900
4000~6000
≥3000
For example: WVP2-1200G indicates that the static advancer is suitable for motor which its rotor current is no more than 1200A, rated voltage is more than 3000V

VI Installation
6.1 Installation diagram and dimensions



Static advancer model
Dimensions
Installation dimension
A×B×C
D×E
WVP2-400D
900×760×2000
600×640
WVP2-400G
WVP2-600D
WVP2-600G
WVP2-800D
1000×800×2000
600×700
WVP2-800G
WVP2-1000G
1200×960×2000
900×840
WVP2-1200G
WVP2-1400G
1300×1060×2200
1000×940
WVP2-1600G
WVP2-1800G
1400×1160×2200
1200×1040
WVP2-2000G

Note:

² The device must be safely and firmly installed.
² Before use, please make sure the equipment is correct and reliable grounding according to the national electrical safety requirements and other relevant standards.
² In case of accident, grounding terminals must be reliably grounded, otherwise electric shock may happen


6.2. Wiring sketch map and precautions
The installation of the WVP static advancer shall be correctly grounded according to the wiring mode shown in below sketch.









Note:

² Minimize electromagnetic contactors and relays, and other sources of interference close contact with the advancer.
² When wiring main circuit, the size should be selected according to the national electrical safety requirements.
² Motor and rotor current should not exceed the rated capacity of the static advancer
² Equipment wiring should be connected with inner control line, and then the power.
² When device is powered, do not touch the internal circuit boards and components, in case of electric shock.
² When the power cut off, do not touch the inner circuit board and any spare parts immediately.


VII Operation

7.1 Operation Panel



Key function instruction

Key-press ID
Key-press name
Function instruction
Set key
1. Press this key to set parameter
2. Press this button to see the next function code and its parameter
Increment key
Increase the amount when modify the parameters
Deduction key
Reduce the amount when modify the parameters
In phase
In phase key
Press this key to in phase
Out phase
Out phase key
Press this key to out phase

7.2 Flow chart of the controller parameters






7.3 Controller parameter setting function table:


Function
Setting rank
Factory  value
Instruction
Code
Name
P01
Controller work method
0,1
0
0:without return difference function  
1:with return difference function
P02
Current display error correction
-50~50
0
Correct small error of current
P03
Transformer ratio
0~2000
200
CT primary current value, the default secondary side rated 5A
P04
Light-load motor current
0~2000
50
P01 is set to 0, showing motor operating conditions that determine the threshold current; P01 is set to 1, said motor operating conditions determine the minimum threshold current hysteresis
P05
Over-load motor current
0~2000
100
Only valid when P01 is set to 1, showing motor operating conditions determine the threshold current limit hysteresis
P06
Password setting
0~2000
0
Setting protection for the parameters
P07
Phase valid value
0~2000
0
P07 < motor current when in phase  
7.4 Instruction of function parameters
1. Controller work method (function code P01)
Controller has two work modes:P01 can be set to (0,1).
"0" means no return difference function, that's to say, the judgment of motor operation is according to P04, if motor operation current is more than P04, it is overload, if less than P04, it is light-load
"1" means with return difference function, that's to say, the judgment of motor operation is according to both P04 and P05, when motor operation current is more than P05, it is overload, when less than P04, it is light-load
2. Current display error correction (function code P02)
It is mainly used for correcting the error between the controller display current and the motor running current, correction range is (-50A ~ +50 A).
3. Transformer ratio (function code P03)
Setting this parameter according to the current signal taken from the primary current transformer, and the default secondary side is rated 5A
4. Motor light load current (function code P04)
When P01 is set to 0, this parameter indicates the threshold current which shows the judgement of motor operation. When P01 is set to 1, this parameter represents the threshold current return difference lower limit of motor operation
5. Motor over load current (function code P05)
This parameter is valid only when P01 is set to 1, it indicates the threshold current return difference upper limit of motor operation
6..Password setting (function code P06)
Used for parameter setting protection, in case of modification of the setted parameter without permission.
7. Phase in valid fixed value (function code P07)
This fixed value is valid only when motor operation current is less than P04, when P07 is less than motor operation current value, and the motor operation current value is less than P04, it means in phase is invalid; when motor operation current is less than P07, it means in phase is valid. (P07 fixed value must be less than P04)

7.5 In power operation
7.5.1 Check before being powered
1. Before connecting the controlling power resource, make sure the AC input voltage is in the rank of permission.
2. Check all connecting screws of all parts are not loose.
3. Confirm there is no short circuit between SCR anode and cathode and the cabinet, and check the SCR resistance value is correct or not. (the following condition is correct: resistance of Cathode and anode is dozens of kilohm, the control electrode and the anode is dozens of kilohm, the control electrode and the Cathode is dozens of ohms )

7.5.2 Test (before turning on motor )
1, Make "W" and "111" of the terminal short circuit (analog start completion signal).
2.Turn down the air switch QF1 in the static phase, at the same time, the out put indicator light on the cabinet door is on, KM1 contactor pull-in, check the main contact with the multimeter, it should be connected.
3, Make the DIP switch of main control panel in test status, as the following diagram shows              

: ON
OFF
1
2
3
4
4, Turn down the air switch QF2 in the static phase, WVP controller displays "A05 FA05" or "A06 FA06", and the indicator light on the controller is on; control board L1, L2, l3 periodic cycles, in addition to L5 is off, the other four lights always on. The lights (totally 12) on the driver board are on
5, Press" in phase" button, KM2 pull in, KM1 disconnected. In phase lights on the cabinet door and the the controller are on. Out phase light is off. Inside motor start working. Every lights on the control panel is the same as before in phase. In out phase for several times,  KM1, KM2 pull in easily, and no cable wiring.
6, Press out phase button, turn off air switch QF2 and QF1, restore the short circle "W" and "111" on the terminal XT2,

7.5.3 Phase in with load
1, Make DIP switch on the main control panel in the WVP working condition, as the following diagram shows              

ON
OFF
1
2
3
4
2, Turn off the air switch QF1 and QF2 in the static phase cabinet, and set the parameters reasonably according to the parameters function diagram
3. After starting the motor, the controller shows the motor running current and power factor, control board L1, L2, l3 periodic cycle, the other five lights are on all the time, the lights on the driver board are shining bright or minor. (If the LED status does not match, you can not enter phase)
4, Press the button to enter phase, the motor current should decrease and the power factor should be increased, if the current increase, should be immediately out phase, turn off the air switch QF2 inside, and exchange TC's 0V and 6V phase on synchronous transformer
5. Adjust compensation transformer voltage and the controller parameter setting value according to the actual effects. (Note: This operation must be carried out under the withdrawal phase state)


Note:

1. Before starting the main motor phase inside air switch (QF1) must be turned off, make the static phase powered, or, the host can not start (pressing starting button is invalid.)
2. Forbid turning off the phase power when the host is still working. Turn off the air switch QF1 in the phase, or cut off the 380V power Otherwise, it will make the main motor stop.
3, When restart the equipment in the condition of fully repair or the static phase is out of work for some time, please check the lights on the control unit in the cabinet are normal or not, then can be put into phase.
4. When in phase, if the stator current changing sharply, should withdraw phase immediately. Find out the reason, repair it and then put into use.
5. Forbid frequently entering phase and withdrawal phase, the repeat operation interval is not less than 1 minute.
6. Forbid pulling out and inserting control interval at will.
7. Overhaul the static phase can not be carried out when the phase is in phase, please withdrawal phase immediately if there is any problem.
8. Strictly observe the boot order of "start first, enter phase secondly" and the stop order of "withdrawal phase first, enter phase second", and shall not operate in reverse order

VIII. Basic maintenance
1) Check if the cooling fan stops running regularly, recede in time and inspect or replace the fan if it stops to     avoid burning the thyristor.
2) Inspect the contacts of the two contactors of the advancer timely to prolong the service lifespan of the contactor and to guarantee the safe operation of the advancer and the motor.
3) Sweep and clear away the dust on the advancer timely to avoid that too much dust affects the normal radiation of the thyristor inside the advancer and of the transformer as well as to avoid the normal operation of the control unit. Dusting must be done especially when the advancer is reused after a long time non-use.

IX. Inspection manual
9.1 The maintenance of light current trouble
9.1.1 The meanings that each indicator light presents on the WVP pane are as follows:
the main board
L1, L2, L3, three-phase current direction of the motor stator
L4,+5Vdirection of power supply
L5, direction of heat trouble
L6, direction of phase-open and automatically trouble protection
L7, +15Vdirection of power supply
L8, -15Vdirection of power supply
the drive panel
There are 12 lights on the two drive panel , respectively represent the triggering signal of the 12 thyristors, they are on and shinning lightly on normal condition.
9.1.2 Common troubleshooting
1. All the lights on the control panel are not normal
.a. if some of the lights on the three panels are not on:
Replace IC210 on the main board;
Replace 2004 if  does not work.
b. if one or two lights on the three panels are not on:
Check if the panel is inserted well.
Replace 555 chips on two drive panels
c. if all of the lights on the three panels are not on:
Check if the main panel is inserted well.
Check if the star contactor is closed. Check is the constantly open auxiliary contact (W, 111) is connected or not
2. Lights on the control panel are not normal:
Observe that if L1~L3 twinkle normally and roundly, and observe that if L4~L8 are constantly on.
a. replace IC211 chip if some light is roundly on well someone is no of L1~L3, as well as other lights are all on:
If L6 is off and others are all on, replace IC210 chip;
Check the current transformer is normal or not.
b. L1~L3 all don't circle:
Replace IC211 if L4~L8 are all on;
If L6 is not on and others are all on, replace IC210,IC205,IC207 chips
c. L6 is off on the control panel and others are normal:
Replace IC207 chip of the control panel;
Replace IC209 chip of the control panel;
d. Each light on the panel is normal well the one on the SSR is off, and then check:
If the temperature of TM output copper row is too high or not,check the axial fan is normal or not, SCR is breakdown or not
If the temperature is not high, check whether the temperature switch is open and solid state relay is bad
3. Lights on drive panel are not normal.
a. Some of the lights on the drive panel are not on, replace 2004;
b. All of the lights on the drive panel are not on, replace 555

9.2. The inspection of heavy current trouble
When the advancer is in trouble, please observe if the indicator lights on the control panel is normal in normal operating state of the host. If it is normal, please inspect as the process of the inspection of heavy current trouble.
1. The motor can't be started
a, Check if the air switch is closed (it shall be closed). Check if the power supply is normal;
b, Check if KM1 is closed normally.
c, Check if the auxiliary contacts 121, 123 of KM1 are closed and connecting normally.
d, Check the starting equipment and the interlock of other starting device.  
2. Press phase-in button to advance; press phase-in releasing button to recede immediately.
a,Check if the insurance FU is good
b,Check if the circuit bundle of KM3 is in good condition and can close normally. It shall be no impermanent short circuit. The contact shall not be ablated or burned;
c,Check if the axial flow fan MF is normal
d,Check if KM4 is in good condition and can close normally. It shall be no short circuit or open circuit. The contact shall not be ablated
e,Check if the contactor of KM2 can close normally; check if it has dither phenomenon (can add 380V AC voltage test alone; but attention must be paid to check if the circuit bundle has short circuit condition) and if the auxiliary contact is burned or felt; check if the constant closed point KA is felt without closing and if the constant closed point KMI is not closed.

3. The host stops after phase-in
a,Make sure the phase sequence of the power supply (or it of the rotor) has not been changed. Please change the phase sequence again if it was changed
b,Make sure the voltage of the power supply ( including the stator power supply of the host and the control power supply) is normal;
c,after stopping the main motor, power off the primary cabinet (that is open the high voltage isolator or open the knife switch of low voltage air switch)
d,Cut off the air switch QF2 in the advancer, and turn the code switch of the main panel to test state. See it in page 13 and then close the air switch QF2
e, Remove the stop interlock wire (125,129,131or 133) which goes to the primary cabinet on the terminal. Check if the auxiliary contacts on KM2 or KM3 have dirty or felt phenomenon.
f, Short circuit the two wires W1, 111 on the terminal;
g, Press phase-in button to observe if the contactor KM2 tingles and check if 125, 129 have closed phenomenon or 131, 133 have open phenomenon. Poor connection of the contact if there are above phenomenon.
h, If KM2 tingles and sounds or can't closed, please remove the coil and replace some of the voltage dividing capacitors in the circuit bundle.
4. Swag in wide range after advance
a,Make sure the phase sequence of the control power supply has not been changed. Please change the phase sequence again if it was changed.
b,Make sure if the power supply of the motor swags in wide range regularly after phase-out. If so, it is affected by load. If not, please conduct inspection as follows.
c,check if the connection wire behind the control panel is loose weld, rosin joint and unwelded;
d,Check if KM2 is closed well. There shall be no sound, otherwise inspect the coil.
e,Check if the axial fan runs normally. If not, please check if KM3, FU are normal and the zero line is connected;
f,Check if the three indicator lights (L1,L2,L3) on the control panel (the one in the middle) are on roundly and regularly. If there is abnormal twinkling, please replace the relevant TA transducer.  
g,Close the air switch QF2, and check if the negative electrode and positive electrode resistance is normal by measuring with the multimeter with 200KΩ or MΩ position. Close QF2, check if the trigger voltage of the silicon controlled is normal, if not, and please replace the relative thyristor.

Note:
1. The inspection of the advancer must be done by technicians, casual handling by laymen is not allowed.
2. The trouble shooting of the advancer is: light current inspection before heavy current inspection. That is, firstly check if the control unit (the control panel) is normal, and then check the trouble of heavy current control loop, check if the control unit is normal.
3. If the put-in and take-out of the control panel is needed for inspection, the single phase air- switch QF2 (no affect on the host operation) of the advancer in phase-out state shall be cut off at first. Moreover, overexertion should be avoided during insertion to avoid the damage of the contact pin.
4. Any circuit variety related to the advancer (such as phase sequence of the main loop, phase sequence of the power supply and so on) must be all debugged again.
5. Please contact our company in time in case of any unsettled problem. We will supply you with technology support at any time.

X. Quality assurance
The quality assurance of this product shall be handled according to the following rules and regulations:
1.The maintenance period of this product shall be 12 months after purchase, but should not exceed 15 months after the manufacturing date recorded on the nameplate. However, failures due to the following reasons shall be repaired for compensation even in the maintenance period.
l Problems due to incorrect operation or impermissible repair and reconstruction of one's own-self.
l Problems due to using exceeding the requirements of standard specification.
l Damage due to falling or carrying ferociously after purchasing.
l Aging or failures of the device resulting from using in the circumstances not conforming to the requirements of this manual.
l Failures resulting from earthquake, fire, wind and flood disaster, lightning stroke, abnormal voltage or other natural disasters, or the causes concomitant.
2.You will enjoy the tech support lifetime and paid services whenever and wherever using our product.
l The sales, production and agency of our company across the country shall provide after-sale service.
l If the products fail to operate, our company has the right to assign other persons for maintenance.
3.Matters concerning dissolution of responsibility
l Our company will not undertake the responsibilities resulting or reducing from using this product departing from the regulations of this manual.
l Our company will not be responsible for compensating the losses or affected and subsequent damage of your party due to the failure of the product.

XI. Ordering notice
Please offer the following data to the manufacturer when make an order:
l Motor type,, rated power, stator current, stator voltage, rotor current, rotor voltage, rated power factor cosj, and transformation ratio of current transformer in the motor control cabinet
l The surface color of the cabinet
l We can provide high and low voltage switch cabinet, WYQ series liquid resistance starter according to the requirements of customer
l Please negotiate with our company when you have special requirements.

[Attached] inspection method for the thyristor:
The one lead out from the air duct of the thyristor and was fastened on isolating board by the screws of M4 is the trigger electrode of the thyristor. And that radiator terminal connected with the trigger wire is the negative electrode of the thyristor. The easy method to inspect if the thyristor is good is to measure the resistance of its each electrode. The resistance among each electrode of good thyristor is as follows:
Trigger electrode and negative electrode --dozens of ohms;
Trigger electrode and positive electrode --dozens of kilohm,
Negative electrode and positive electrode --dozens of kilohm