Northern Lights LX-E Operator's & Parts Manual
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Northern Lights LX-E Operator's & Parts Manual

A.c. generator for generator model: lx-e 34 e
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PERATOR'S
PERATOR'S
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P
&
&
M
M
ANUAL
ANUAL
LX-E A.C. GENERATOR
For Generator Model:
LX-E 34 E
ARTS
ARTS

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Summary of Contents for Northern Lights LX-E

  • Page 1 PERATOR’S PERATOR’S & ARTS & ARTS ANUAL ANUAL LX-E A.C. GENERATOR For Generator Model: LX-E 34 E...
  • Page 2 4420 14th Avenue N.W. Seattle, WA 98107 Tel: (206) 789-3880 Fax: (206) 782-5455 Copyright ©2010 Northern Lights, Inc. All rights reserved. Northern Lights™, and the Northern Lights logo are trademarks of Northern Lights, Inc. Printed in U.S.A. PART NO.: OLXE 03/10...

  • Page 3: Table Of Contents

    This publication is the property of Northern Lights, Inc. It may not be reproduced in whole or in part without the written permission of Northern Lights, Inc. © Northern Lights, Inc. 2010. All rights reserved. Litho U.S.A. Publication number OLXE 03/10...

  • Page 4: Introduction

    • To insure years of trouble-free operation, the specifi ed maintenance is important and should be LX-E Series AC generators are based on performed. BS 4999 part 20 and IEC34-5, IP22. • Electrical equipment should always be kept clean.

  • Page 5: Models And Serial Numbers

    Generator Set Model No ....... Generator Model M944T ............LX-E 34E 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.

  • Page 6: Mechanical Construction

    STATOR COUPLING WITH PRIME MOVER The stator frame is fabricated from rolled steel. The LX-E series single bearing generators make centering and round construction provides rigidity and strength to direct coupling easy. Coupling bolt torque is 35 ft.-lb. resist excessive mechanical shocks. The stator core is...

  • Page 7: Performance And Function

    Performance and Function EXCITATION SYSTEM The excitation system of the LX-E 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...

  • Page 8: Characteristics Voltage Regulation

    In constant load and engine speed, voltage stability remains 0.25% of the rated voltage. Standard Voltage Tables and Connection Diagrams Standard voltage selection table and connection diagram for LX-E Series 3-phase 12-wire AC generators. See AC wiring schematic page 19. Winding Connection...

  • Page 9: Operation - Generator Set

    Operation – Generator Set Operation – Automatic Voltage Regulator STARTING Before starting generator, check the following: SAFETY RULES 1. Make sure that the wiring is correct. • Do not leave AVR connected when testing generator 2. Be sure that nothing is blocking the air inlet/ outlet. with high-pot or megger.

  • Page 10: Maintenance Bearing Inspection

    Maintenance b. Using a bearing puller, extract bearing from BEARING INSPECTION shaft. For bearing inspection, make sure that there is no c. When installing a new bearing, place a steel pipe abnormal sound during normal running and no over- on the inner race surface, and fi t the bearing by heating.

  • Page 11: Automatic Voltage Regulator Maintenance

    4. Rotating Rectifi er Assembly Detailed Structure: Figure 8. Testing Diode Elements d. The Diode Torque Specifi cations for LX-E models is 5 mm = 48 in. lb. e. In order to test whether the rotating rectifi er Figure 9. Rotating Rectifi er.

  • Page 12: Generator Specifi Cations

    Generator Specifi cations: Taiyo Winding Resistances for LX-E 34E All ratings in Ohms @ 20° C 1 or 3 Phase MAIN STATOR: 0.0580 Ω 1 or 3 Phase MAIN ROTOR: 3.3 Ω 1 or 3 Phase EXCITER STATOR: 16.4 Ω...

  • Page 13: Voltage Regulator Specifi Cations

    Automatic Voltage Regulator: DST-100-2FAK Sensing Output Frequency 50 Hz 60 Hz Voltage 100 Volt Class 100V 120V (86.5V~110V~120V) 200 Volt Class 200V 240V (173V~220V~240V) Phase: Single Phase Single Phase Power Input Voltage: 100V ~ 127V ~ 139V Frequency: 50 Hz / 60 Hz Phase: Single Phase...

  • Page 14: Troubleshooting

    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 •...

  • Page 15: Parts List

    LX-E Parts List 3T102-435 No Description LX-E 34E Stator Assembly GW-20650-STF with frame GM304980-1 Rotor Assembly GM304982 Exciter Field Assembly WKC-0131-F Rectifi er Assembly 3T201-084-3 with diode element Diode Element SKN 26/12 Diode Element SKR 26/12 Bearing 6311ZZ Fan Assembly...
  • Page 16 Junction Box (Single Phase Wiring Shown) 3T102-430-2 Description Part Number Grommet NG-79-R Circuit Breaker 22-40018 Terminal 22-45413 Automatic Voltage Regulator (DST-100-2FAK) 22-42071 Terminal UK150-3J Circuit Breaker 3 Amp 22-42077 Rubber Mount 33-40007 Bracket, Junction Box Mtg. - Right and left 3T303-672 Junction Box 3T303-671...

  • Page 17: Wiring Diagram Avr Dst-100-2Fak

    OLXE 03/10...

  • Page 18: Connection Schematic

    OLXE 03/10...
  • Page 19 NORTHERN LIGHTS 4420 14th AVE. N.W. SEATTLE, WA 98107-5043 TEL: (206) 789-3880 FAX: (206) 782-5455 http://www.northern-lights.com...

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Lx-e 34e

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