Summary of Contents for Northern Lights PX-300K1 Series A.C. Generator
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PERATOR’S PERATOR’S & ARTS & ARTS ANUAL ANUAL PX-300K1 SERIES A.C. GENERATORS For Generator Models: PX- 308 K 1 , PX309K1, PX- 310 K 1 , PX- 312 K 1 , PX- 316 K 1 , PX- 320 K 1, PX-325K1, and PX-332K1...
Introduction • Insulation Resistance and Dielectric: When This manual describes procedures for operation, measuring insulation resistance and dielectric, be maintenance, inspection and adjustment. It will help the sure to disconnect the AVR and rectifi er. operator realize peak performance through effective, economical and safe operation.
M864 ..............PX-325K M984 ............PX-332K1 SERIAL NUMBERS • When referencing Northern Lights equip ment by serial number, it is important to differentiate between the engine, generator end and generator set serial numbers. • The engine serial number is either on a metal tag or stamped directly into the engine block.
Mechanical Construction STATOR COUPLING BOLT SPECIFICATIONS The stator frame is fabricated from rolled steel. The The Coupling Bolt Torque for all PX-300K series models round construction provides rigidity and strength to is 32 lbs.ft. resist excessive mechanical shocks. The stator core is made of high quality silicon steel plates coated with COUPLING WITH PRIME MOVER insulating fi...
Performance and Function EXCITATION SYSTEM The excitation system of the PX-300K Series genera- tor uses an Automatic Voltage Regulator (AVR) which uses a portion of the output power to supply controlled DC power to the exciter fi eld (EX) as show in Figure 2. When DC power is supplied to the exciter fi...
Characteristics VOLTAGE REGULATION SHORT CIRCUIT Generator terminal voltage regulation is within ± 1% of the PX-300K Series AC generators can provide over 300% of rated voltage in lagging power factor. 1.0 to 0.8, when the the rated current for a short period of time, with an load is varied gradually from no load to full load.
Operation – Generator Set STOPPING After putting the running generator in a no-load condition STARTING by removing the generator load, stop the engine in Before starting generator, check the following: accordance with the Engine Manual. 1. Make sure that the wiring is correct. 2.
Operation – Automatic Voltage Regulator SAFETY RULES • Do not leave AVR connected when testing generator 2. Voltage Adjustment: with high-pot or megger. If the voltage output is low, increase the voltage by • Adjust the engine only when the CPR is in “OFF” turning the Voltage Adjust (VR1) slowly clockwise.
Maintenance BEARING INSPECTION b. Using a bearing puller, extract bearing from For bearing inspection, make sure that there is no shaft. abnormal sound during normal running and no c. When installing a new bearing, place a steel pipe over heating. Greasing is not necessary for generators on the inner race surface, and fi...
Maintenance 2. Replacement of Rotary Rectifi er Parts: • Good surge absorber elements have about 10-30 K a. Rotary rectifi er parts are all located at the rear ohms, but if the resistance reading is near 0 ohms, the of Exciter rotor. For parts replacement, remove the surge absorber elements is defective and must be bearing shield.
4. Rotating Rectifi er Assembly Detailed Structure: Figure 9. Rotating Rectifi er. Maintenance – Automatic Voltage Regulator 1. Keep the AVR clean at all times. Make sure no dust or moisture accumulates on the AVR. 2. Inspect periodically making sure that wiring connections are not loose. OPX300K1 09/09...
Automatic Voltage Regulator: DST-51-DFK Sensing Output Frequency 50 Hz 60 Hz (4) – (100) 100V Class 100 Volt Class 100V 120V (4) – (200) 200V Class 200 Volt Class 200V 240V Phase: Single Phase Single Phase Power Input Voltage: 100V 139V (4 –...
Trouble Shooting PROBLEM POSSIBLE CAUSE RECOMMENDATION(S) Only a FEW VOLTS Loss of residual magnetism of the exiter fi eld • Flash fi eld. of output Disconnection or short circuit of windings • Check the insulation of all windings and check the resistance value. Defective AVR •...
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PX-300K1 Series Parts List No Description PX-308K1/PX-309K1 PX-310K1 PX-312K1 PX-316K1 PX-320K1 Generator Mounting Bracket 3T301-267-2 R 3T301-268-2 R 3T301-268-2 R 3T301-269-2 R 3T301-269-2 R 3T301-267-2 L 3T301-268-2 L 3T301-268-2 L 3T301-269-2 L 3T301-269-2 L J-Box Support Bracket, Right 4T301-309 3T301-309 3T301-309 3T301-309 3T301-309...
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