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Northern Lights PX-300K2 Series A.C. Generators Operator'S & Parts Manual Download Page 24

OPX300K2  05/12

24

PX-332K2 
Junction Box, Single Phase

 Key  

Description   

Part Number 

 

 

1   

Junction Box 

 

3T303-291-3*                *

replaces 3T303-291-1

 

 

2   

Bracket, Junction Box Mounting 

3T302-782-1  (2 ea.) 

 

 

 3  

Top 

Panel 

 

4T302-144

 

4   

Side Panel 

 

4T302-859 (2 ea.)

 5  

Grommet 

 

 

4M911-018

 6  

Plug 

 

3191-09P  

 7  

Grommet 

 

NG-79-R   

 

 

 9  

Terminal 

Strip  

22-45413

 

11   

Circuit Breaker 15 Amp 

22-42043

  12   

Circuit Breaker 2 Amp x 3 Amp 2 Pole 

22-42084**                    **

replaces 22-42077

  13   

Automatic Voltage Regulator 

22-42071

 14  

Rubber 

Mount  

33-40007 

3T102-348

Summary of Contents for PX-300K2 Series A.C. Generators

Page 1: ...PX 300K2 SERIES A C GENERATORS For Generator Models PX 308K2 PX309K2 PX 310K2 PX 312K2 PX 316K2 PX 320K2 PX 320C2 PX 325K2 PX 332K2 and PX 332C2 OPERATOR S PARTS MANUAL OPERATOR S PARTS MANUAL ...

Page 2: ... All rights reserved Northern Lights and the Northern Lights logo are trademarks of Northern Lights Inc Printed in U S A PART NO OPX300K2 09 10 Diesel engine exhaust and some of its constitu ents are known to the State of California to cause cancer birth defects and other reproductive harm CALIFORNIA Proposition 65 Warning ...

Page 3: ...esponse 8 Voltage Stability 8 Motor Starting 8 Short Circuit 8 Phase Rotation 8 STANDARD VOLTAGE SELECTION TABLE 8 OPERATION GENERATOR SET Starting 9 Voltage Adjustment 9 Running 9 Stopping 9 OPERATION VOLTAGE REGULATOR Safety Rules 10 Operation 10 Adjustment 10 MAINTENANCE Bearing Inspection 11 Insulation Resistance Measurement Method 11 Rotating Rectifier Assembly 11 Parts Replacement Method 11 ...

Page 4: ...ide methane gas etc b Sandy Dust Do not use equipment in places with excessive sand and dust c Humidity Do not use in very humid environments for long periods of time d Salt Seawater Protect your generator from exposure to salt water and water vapor Insulation Resistance and Dielectric When measuring insulation resistance and dielectric be sure to disconnect the AVR and rectifier Besurethattheregu...

Page 5: ...30CW CW3 PX 332C2 M984W PX 332K2 M33CW PX 332C2 SERIAL NUMBERS When referencing Northern Lights equipment 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 The generator END serial number is on a metal tag attached to the generator end The ge...

Page 6: ...r rotary rectifier and cooling fan are integral parts of the same shaft VENTILATION Cooling is provided by the cooling fan of the rotor through suction ports and exhausted through outlet ports Every machine conforms to the cooling code ICO1 of BS Initial Inspection and Coupling INITIAL INSPECTION If the generator is stored for long periods of time store in a clean dry ventilated area After extensi...

Page 7: ...nside the AVR Input power is obtained from the main stator Rectified output power to the exciter field is controlled by switching a transistor on and off This AVR will control terminal voltage even if the input sine wave is distorted Figure 2 PX 300K2 Block Diagram AVR Automatic Voltage Regulator EX Exciter Si Rotating Rectifier Figure 4 For 60 Hz Figure 3 For 50 Hz UNDER SPEED PROTECTION A freque...

Page 8: ...0 seconds at power factor of 0 Winding Connection Frequency Voltages 3 Phase Series Star 60 Hz 480 277 460 266 440 254 416 240 High Wye 50 Hz 415 240 400 231 380 219 3 Phase Parallel Star 60 Hz 240 139 230 133 220 127 208 120 Low Wye 50 Hz 208 120 200 115 190 110 1 Phase 60 Hz 120 240 60 Hz 120 1 Phase 50 Hz 100 200 110 220 115 230 120 240 50 Hz 110 SHORT CIRCUIT PX 300K2 Series AC generators can ...

Page 9: ...ill not rise with CPR OFF 3 After running the generator without load switch the circuit breaker ON to start the load operation VOLTAGE ADJUSTMENT The generator has been adjusted to obtain optimum voltage at the factory If the voltage is different adjust the voltage with the Voltage Adjust provided on the AVR RUNNING Check the following while operating the generator 1 Abnormal vibration and or soun...

Page 10: ...e of voltage stability by switching the load ON or OFF Use the Stability Adjust VR2 e If you find no problem with the AVR start the normal operation ADJUSTMENT Each component of the AVR is adjusted at the factory to obtain optimum voltage If readjustment is necessary make sure the voltage frequency load etc are functioning properly after readjustment 1 Initial Excitation For initial excitation use...

Page 11: ...ow it out with dry compressed air Wipe off oil stains with a cloth If the generator is damp dry it and re check ROTATING RECTIFIER ASSEMBLY The rotating rectifier assembly needs little attention Clean off dust and oil stains periodically In the unlikely event that it becomes necessary to replace the diode ele ments and surge absorber elements Refer to PARTS REPLACEMENT METHOD PARTS REPLACEMENT MET...

Page 12: ... side of the rotating rectifier assembly and K type diode elements to the K side Figure 8 Testing Diode Elements d The Diode Torque Specifications for all 300 series models is 5 mm 48 in lb e In order to test whether the rotating rectifier assembly surge absorber elements are good or not first disconnect all lead wires as described in PARTS REPLACEMENT METHOD Point 2 above and measure the resistan...

Page 13: ...y Detailed Structure Figure 9 Rotating Rectifier 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 ...

Page 14: ...094 ohms 0 0817 ohms Model Number 1 Phase 3 Phase MAIN PX 308K2 1 84 ohms 1 84 ohms ROTOR PX 309K2 1 84 ohms 1 84 ohms PX 310K2 1 95 ohms 1 95 ohms PX 312K2 2 10 ohms 2 10 ohms PX 316K2 2 40 ohms 2 40 ohms PX 320K2 PX 320C2 2 77 ohms 2 77 ohms PX 325K2 3 60 ohms 3 60 ohms PX 332K2 PX 332C2 3 91 ohms 3 91 ohms Model Number 1 Phase 3 Phase EXCITER PX 308K2 PX 309K2 15 8 ohms 15 8 ohms STATOR PX 310K...

Page 15: ...s 28 9 volts PX 312K2 50 Hz 220 volts 45 5 volts 32 8 volts 60 Hz 240 volts 50 0 volts 36 1 volts PX 316K2 50 Hz 220 volts 54 5 volts 39 4 volts 60 Hz 240 volts 66 7 volts 48 1 volts PX 320K2 PX 320C2 50 Hz 220 volts 72 7 volts 52 5 volts 60 Hz 240 volts 83 3 volts 60 1 volts PX 325K2 50 Hz 220 volts 90 9 volts 52 5 volts 60 Hz 240 volts 104 2 volts 60 1 volts PX 332K2 PX 332C2 50 Hz 220 volts 118...

Page 16: ...urrent Maximum Forcing 9A forcing 1 to 5 seconds at 25 C Field Resistance Minimum 15 Ohms Voltage Adjust Range Minimum 5 of Normal Voltage Volt Hertz Characteristic 57 Hz in 60 Hz operation mode 47 Hz in 50 Hz operation mode Voltage Build Up Self Building Up at over 6V Power Input Voltage Voltage Changeable Rate Maximum 1 5 Temperature Drift Within 0 02 degree C Operating Temperature 4 F 20 C to 1...

Page 17: ...AVR Voltage DIPS Starting of big motor or spot welding machine About 15 voltage dip is no problem when on load Defective diode on rotating rectifier Change diode F F terminal voltage will show a very high value when a diode is defective Voltage is HIGH Incorrect wiring GEN AVR Check the AVR Too high speed Check the engine Defective AVR Check the AVR Voltage FLUCTUATES Wiring leads are loose Tighte...

Page 18: ...3T102 346 3T102 346 3T102 346 3T102 346 3T102 346 Junction Box NL Type 1 Phase 3T102 349 3T102 349 3T102 349 3T102 349 3T102 349 Junction Box M Type 3 Phase 3T102 350 3T102 350 3T102 350 3T102 350 3T102 350 Junction Box NL Type 3 Phase 3T102 352 3T102 352 3T102 352 3T102 352 3T102 352 11 Rubber Mount 33 40007 33 40007 33 40007 33 40007 33 40007 13 Automatic Voltage Regulator 22 42071 22 42071 22 4...

Page 19: ...102 347 3T102 348 Junction Box NL Type 1 Phase 3T102 349 3T102 348 Junction Box M Type 3 Phase 3T102 350 3T102 350 3T102 351 Junction Box NL Type 3 Phase 3T102 352 3T102 351 11 Rubber Mount 33 40007 33 40007 33 40007 13 Automatic Voltage Regulator 22 42071 22 42071 22 42071 14 Circuit Breaker Voltage Regulator 22 42084 22 42084 22 42084 replaces 22 42077 15 Circuit Breaker Engine 22 42043 22 42043...

Page 20: ...t 33 40007 13 Automatic Voltage Regulator 22 42071 14 Circuit Breaker Voltage Regulator 22 42084 replaces 22 42077 15 Circuit Breaker Engine 22 42043 16 Spacer 4T301 181 4 ea 17 Generator Mounting Bracket R 3T302 857 1 R Generator Mounting Bracket L 3T302 857 1 L 18 Surge Suppressor for 3T201 084 ENC471D 2DA 19 Diode Element SKN26 12 3 ea replaces SID01 09 74113 Diode Element SKR26 12 3 ea replace...

Page 21: ...T302 796 1 10 Junction Box M Type 1 Phase 3T102 348 Junction Box M Type 3 Phase 3T102 351 11 Rubber Mount 33 40007 13 Automatic Voltage Regulator 22 42071 14 Circuit Breaker Voltage Regulator 22 42084 replaces 22 42077 15 Circuit Breaker Engine 22 42043 17 Generator Mounting Bracket R 23 65413 M33CW Generator Mounting Bracket L 23 65413 M33CW Generator Mtg Bracket R L 23 61201 M30CW 18 Surge Suppr...

Page 22: ... Regulator DST 100 2FAK 22 42071 7 Circuit Breaker 2 Amp x 3 Amp 2 Pole 22 42084 replaces 22 42077 8 Rubber Tube 9 Rubber Mount 33 40007 4 ea 10 Bracket Junction Box 4T301 309 11 Spacer 4T301 181 2 ea 12 Bracket Junction Box Mtg Left 4T301 310 Bracket Junction Box Mtg Right 4T301 309 13 Junction Box 3T303 289 2 replaces 3T303 289 1 14 Top Panel 4T301 108 15 Side Panel 4T301 109 2 ea 3T102 346 ...

Page 23: ... 2FAK 22 42071 5 Plug 3191 09P 7 Circuit Breaker 2 Amp x 3 Amp 2 Pole 22 42084 replaces 22 42077 8 Rubber Tube 9 Rubber Mount 33 40007 4 ea 10 Bracket Junction Box 4T301 309 11 Spacer 4T301 181 2 ea 12 Bracket Junction Box Mtg Left 4T301 310 Bracket Junction Box Mtg Right 4T301 309 13 Junction Box 3T303 292 2 formerly 3T303 292 1 14 Top Panel 4T301 108 15 Side Panel 4T301 109 2 ea 3T102 347 ...

Page 24: ...nction Box Mounting 3T302 782 1 2 ea 3 Top Panel 4T302 144 4 Side Panel 4T302 859 2 ea 5 Grommet 4M911 018 6 Plug 3191 09P 7 Grommet NG 79 R 9 Terminal Strip 22 45413 11 Circuit Breaker 15 Amp 22 42043 12 Circuit Breaker 2 Amp x 3 Amp 2 Pole 22 42084 replaces 22 42077 13 Automatic Voltage Regulator 22 42071 14 Rubber Mount 33 40007 3T102 348 ...

Page 25: ...Regulator DST 100 2FAK 22 42071 7 Circuit Breaker 2 Amp x 3 Amp 2 Pole 22 42084 replaces 22 42077 8 Rubber Tube 9 Rubber Mount 33 40007 4 ea 10 Bracket Junction Box 4T301 309 11 Plug 3191 09P 12 Spacer 4T301 181 4 ea 13 Bracket Junction Box Mtg Left 4T301 310 Bracket Junction Box Mtg Right 4T301 309 14 Junction Box 3T303 290 2 replaces 3T303 290 1 15 Top Panel 4T301 108 16 Side Panel 4T301 109 2 e...

Page 26: ...l 4T302 144 4 Side Panel 4T302 859 2 ea 5 Grommet G 1 replaces 4M911 018 6 Plug 3191 09P 7 Grommet NG 79 R 8 Spacer 4T301 310 2 ea 9 Terminal for output 22 45413 10 Terminal for output UKT100 3J 11 Circuit Breaker 15 Amp 22 42043 12 Circuit Breaker 2 Amp x 3 Amp 2 Pole 22 42084 replaces 22 42077 13 Automatic Voltage Regulator DST 100 2FAK 22 42071 14 Rubber Mount 33 40007 4 ea 3T102 351 ...

Page 27: ...OPX300K2 05 12 27 AC Wiring Schematic B 8280E DST 100 2FAK All Voltages ...

Page 28: ...NORTHERN LIGHTS 4420 14th AVE N W SEATTLE WA 98107 5043 USA TEL 206 789 3880 FAX 206 782 5455 http www northern lights com ...

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