减压器说明书(英).doc

XJA1 Auto Voltage Reducing StarterUser ManualStandard number：GB14048.4-2003Chang an Group Co. Ltd. Outline 1. Applied as less frequent reduced-voltage starting for three-phase squirrel-cage induction motor of rated voltages and capacity up to and including 380V and 320kw, the starter minimizes the influence to the transmission network. 2. Working indoors and under following conditions:(1) Altitude 3200w(2) Temperature within -5and 40, with a 35average(3) Relative humidity under 85%(4) Amplitude0.5mm, frequency600/m(5) 5angle from the vertical(6) Neither in the environment with metal-corrosive or insulation-disturbing gas nor in the air with inductive or explosive dust.(7) Protection degree IP203. The model symbol is illustrated as follows:X J A1 Rated capacity（KW）Voltage reducingCode nameStarter Starting Performance 4. To start an electric motor with XJA1, the starting current is 3-4 times over the rated and it should be done within 15 seconds. When using it twice in a roll, wait until it cools down to the room temperature, for frequent operation disturbs its performance. Structure5. XJA1 is designed as a central box structure, consisting mainly of an autotransformer, an AC contactor, a thermal relay, an intermediate relay, a time relay. Those up to 75kw apply automatic control system. Those 85kw and above apply two modes with an auto-man switch and an adjustable time relay, and starting time can be adjusted at between 5 and 15 seconds. There are two models of tapped coils, one with 65% rated voltage as the original default and an 80% one when necessary. Technical Content 6. See Table 1 for technical content.ModelRating（kW）Max operating current Ie（A）Auto-transformer rating（KW）流互感器ratio（K）Relay setting current reference value（A）XJA1-1414281475/528XJA 1-1717331775/535XJA 1-2020402075/540XJA 1-2222432275/545XJA 1-28285628100/556XJA 1-30305830100/560XJA 1-40408040100/580XJA 1-555511055200/5110XJA 1-757514275200/5145XJA 1-100100200100300/53.4XJA 1-115115230115300/53.9XJA 1-135135254135600/52.3XJA 1-155155291155600/52.5XJA 1-190190350190600/53.0XJA 1-225225413225800/52.6XJA 1-260260477260800/53XJA 1-280280514280800/53.3XJA 1-300300551300800/53.5XJA 1-320320588320800/53.8Table 1 7. The table above is only for reference. The setting value should be adjusted to the actual rating of the motor used. Change the thermal relay when necessary. （1）set at Ie value for up to and 75kW（2）set at XIe value for 80kW and aboveIeControlling motors rated currentXCurrent transformer change Installation and Application 8. see Figure1-3 for dimensional drawing and observe Table2 for installing dimensions； 9. refer to Figure4-6 for its electric control system; 10. Check to see any improper position before use; adjust the time relay to the actual motor use(15s); adjust the thermal relay to the motors operating current value. Then try the operation in different conditions. 1）auto control Throw the switch (knife transfer switch for 80kw) until the red indicator lamp is on, and tune to “auto” (80kw) and start the motor when green light is on. After the time is set by the time relay, the AC contactor is connected when the yellow light flashes. Then press “stop” button to stop the motor. With the pickup of starting contactor, the auto transformer begins to work when the green light turns off; when the yellow light is on, the time relay restarts, and after the setting moment, starting contactor fails, followed by an automatic switch to a decent operation, then the yellow light turns off and red light is on. Now press the “stop” button, and the motor stops running. 2）manual control(80kw) Throw the switch until the red indicator lamp is on, and tune to “auto” and start the motor when green light is on. When the motor reaches a steady speed and the current value falls to the rated current, press the “start” button to run the motor. Now you see a lighted yellow indicator instead of a green one, and press the “stop” button to stop the motor. Statement 1: Switch from starting to operating only when the motor reaches the rated speed, otherwise it spoils the contactor easily and harms the power network。The starting should be finished within 15 seconds and stop the motor with any malfunction within this period. Shoot the fault and do not restart until it cools down. Statement 2: Adjust the operating current of the thermal relay to a higher degree if there is any malfunction, and pull down the reset handle when it is overloaded during the operation. Table 2modelsize（mm）Installing size（mm）remarksABCEFXJA1-(1430)4007002803701201060F1XJA 1-(4075)50010002904701201060F1XJA 1-(80115)54012604255002801060F2XJA 1-(139190)61014404905603501060F2XJA 1-(225320)70017005806504401060F3 F1 XJA1-（1475）KwF2 XJA 01-（80190）kW F3 XJA 1-（225300）kW F4 XJA 1-(1420)kW Electric Circuit DiagramF5 XJA 1-(2275)kW Electric Circuit DiagramF6 XJA 1-(80320)kW Electric Circuit Diagram Trouble Shooting Guidetroublesreasonsguide1.start failure1.dead starting box2. blown fuse3.working thermal relay4. burnt contactor coil1. supply power2.find the cause and change the fuse3.find the cause and reset; restart until it cools down；4.change the coil2.Contactor pickup failure, bounce switch1. low input voltage2. power shortage1.try upgrading input voltage and minimize line drop2. increase power supply, increase capacitance；3. Hard starting1. low input voltage2.overload1.raise input voltage2.lighten starting load，apply an 80% model of transformer tap4.transformation failure in auto start1.malfunction of time relay2.wrong setting of the time relay1.find the fault and repair2. refer to manual and reset properly5.manual switch failure1. trouble in secondary circuit2.starting contact adhesion1. find the fault and repair2.cut off and find any overload, power shortage or sharp voltage drop6.Over-temp motor, thermal relay starts1. overload2. load trouble3. phase failure of motor4. high temperature5.low line-to-line voltage1.reduce the load2.shoot the trouble3.keep an eye to avoid running lack of phase4. better ventilation5.raise input voltage7.exploded noise from the transformer1.loose transformer cores2.any coil short to ground1.fasten the core2.locate the fault by using an insulation resistance meter, rewind or reinforce insulation8.m