斯坦福發電機AVR故障維修查找

c、檢查剩磁電壓，按外界勵磁試驗法步驟檢查發電機和 AVR（在機靜止時拆下 AVR上的 X和 XX的連線啟動機組并測試 P2-P3，停機重新接上 X和 XX導線，如果測得電壓大于 5V則發電機應能正常工作，低于 5V用一個直流電池負極接 XX線柱，正極通過一個二極管接 X線柱。二極管為 1A／1000V，起機 P2-P3間應有 170-250V電壓，拆下電池后仍無電壓查找繞組 AVR和旋轉二極管。查找永磁發電機 PMGP2P3P4間電壓應 170-180V／50HZ，200-216V／60HZ，若不均衡，停機從非驅動端將 PMG輸出導線插件斷開，檢查 P2P3P4連線測定子電阻應在 2.3Ω±10％，否則定子不行，若電壓均衡但電壓偏低阻值正常，轉子應更換）。

2、空載或負載時電壓不穩

a、檢查轉速穩定性

b、檢查穩定性設置（順時到底逆時到開始電壓波動再順時針一

點到平穩）

3、空載或負載時電壓過高

a、檢查轉速

b、檢查發電機負載是否容性負載（功率因數超前）

4、空載時電壓過低

c、檢查轉速

d、檢查接線 1-2或外接手動微調是否連接完好

5、負載時電壓過低

a、檢查轉速

b、檢查 UFRO設置（檢查發動機和 AVR）

電動機故障

1、電機不能啟動： a、缺相 b、熔體燒斷 c、繞組接地或相間匝間短路

2、電機外殼帶電： a、繞組接地 b、繞組受潮，絕緣老化

3、電機運行時，電流表指針不穩擺動： a、轉子導條開焊或斷條

4、絕緣電阻低： a、繞組受潮或被水淋濕 b、繞組絕緣沾滿灰塵油污 c、引出線絕緣老化破裂

d、繞組絕緣老化

5、電動機運行時有雜音、不正常： a、軸承磨損有故障 b、定轉子鐵芯松動 c、繞組有故障（如短路） d、軸承缺少潤滑脂 e、定轉子相擦或較大的砂粒進入氣隙 f、系統轉動慣量小

6、電機過熱或冒煙： a、氣隙中積滿灰塵 b、電機內外積滿塵土或異物影響電機散熱 c、導條斷裂或開焊 d、繞組匝間短路或接地 e、電機兩相運轉,斯坦福發電機|斯坦福發電機維修|斯坦福發電機AVR故障維修資料|斯坦福發電機AVR故障維修查找技術|斯坦福發電機AVR維修服務商

7、電動機振動： a、軸承磨損 b、導條斷裂開焊 c、繞組故障（短路斷路接地等） d、鐵芯變形或松動 e、皮帶輪安裝不當 f、電機地腳螺栓松動

8、軸承發熱超過規定值： a、潤滑脂過多或過少 b、油質不好或含雜質 c、軸承有故障，磨損，有雜物等 d、皮帶輪偏小或皮帶過緊 e、軸承油隙過大或過小

㈡電路保險絲熔斷：更換保險絲。

Stanford Generator (SX440 460 321 341 AVR) Troubleshooting to find

1, the unit start voltage:

a, check the line K1 - K2

b check the speed

c, check the remanence voltage, external excitation test method steps to check generator and AVR (unit and test the P2-P3, the machine stationary remove AVR X and XX of the connection start and stop re-connected to the X and XX wire If the measured voltage is greater than 5V the generator should be able to work properly, less than 5V with a DC battery negative pole XX Line column, what is the cathode connected through a diode X-ray column. diode for 1A/1000V, from the native P2-P3 between should be 170-250V voltage, remove the battery still no voltage to find the winding AVR and the rotating diodes. Find the voltage between the permanent magnet generator PMGP2P3P4 to should 170-180V/50HZ, 200-216V / 60HZ, if not balanced, downtime from non-drive side will disconnect the PMG output wire plug the check P2P3P4 connection determination of child resistance in 2.3Ω ± 10%, otherwise the stator can not, if the voltage is balanced but voltage is low resistance to normal, the rotor should be replaced).


2, no-load or load voltage instability

a, check the speed stability

b check the stability of the set (clockwise in the end reverse to the beginning of voltage fluctuation and then clockwise

Point to the stable)


3, no-load or load voltage is too high

a check speed

b, check the generator load is capacitive load (power factor ahead)


4, no-load voltage is too low

c check the speed

d, check the wiring 1-2 or external to manually fine-tune the connection intact


5, the load voltage is too low

a check speed

b check UFRO the settings (check the engine and the AVR)

Motor fault

1, the motor can not start: a, phase b, melt blown c winding ground or white interturn short circuit

2, the motor housing live: a winding grounded b, winding dampness, insulation aging

3, when the motor is running, the ammeter pointer unstable swing: a rotor bar open solder or broken bars

4, low insulation resistance: a, winding dampness or water wet b, winding insulation covered with dust, greasy dirt c Lead insulation aging rupture

d, winding insulation aging

5, when the motor is running noise is not normal: a bearing wear fault b, fixed rotor core loose c, winding faults (eg short circuit) d, bearing to the lack of grease e stator and rotor rub or larger sand enter the air gap f, the system moment of inertia

Motor overheating or smoke: a, air-gap in the dusty b motor inside and outside the dusty or foreign body affecting the motor cooling c conductivity fracture or open solder d, winding interturn short circuit or ground e, motor two-phase operation

7, motor vibration: a, bearing wear b, BAR breaking open welding c winding fault (short circuit grounding, etc.) d core deformation or loosening of e pulley improper installation, f, motor anchor bolts loose

8, bearing fever more than require values: a, grease too much or too little b oil is not good or impurities c, bearing failure, wear, and other debris d pulley is too small or belt pull e bearings oil clearance is too large or too small

(Ii) circuit blown fuse: Replace the fuse.