Northern Lights LX-E, LX-E 34E Installation Manual

OPERATOR’S

OPERATOR’S

&

&

MANUAL

MANUAL

LX-E A.C. GENERATOR

For Generator Model:
LX-E 34 E

PARTS

PARTS

— CALIFORNIA —

Proposition 65 Warning:

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.

Northern Lights

4420 14th Avenue N.W.
Seattle, WA 98107
Tel: [phone]
Fax: [phone]

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

OPERATOR’S & PARTS

MANUAL OLXE

For Generator Model:

LX-E 34E

Read this manual thoroughly before starting your equipment.

This manual contains information needed to operate your set correctly and safely.

Table of Contents

Introduction. .....................................................................4

Safety Rules .....................................................................4

Models and Serial Numbers ...........................................5

Mechanical Construction .................................................6

INITIAL INSPECTION AND COUPLING

Initial Inspection..........................................................6

Coupling with Prime Mover........................................6

Grounding ...................................................................6

PERFORMANCE AND FUNCTION

Excitation System........................................................7

Automatic Voltage Regulator (AVR) ..........................7

Under Speed Protection...............................................7

Rotary Rectifi er and Surge Suppressor .......................7

CHARACTERISTICS

Voltage Regulation ......................................................8

Response .....................................................................8

Voltage Stability ..........................................................8

Short Circuit ................................................................8

Phase Rotation .............................................................8

OPERATION - GENERATOR SET

Starting ........................................................................9

Voltage Adjustment .....................................................9

Running .......................................................................9

Stopping ......................................................................9

OPERATION - VOLTAGE REGULATOR

Safety Rules ................................................................9

Operation ....................................................................9

Adjustment ..................................................................9

MAINTENANCE

Bearing Inspection ................................................... 10

Insulation Resistance Measurement Method ........... 10

Rotating Rectifi er Assembly ................................... 10

Parts Replacement Method ...............................10 - 11

Automatic Voltage Regulator Maintenance ..............11

SPECIFICATIONS

Generator Specifi cations.......................................... 12

Voltage Regulator Specifi cations ............................. 13

TROUBLESHOOTING ............................................. 14

STANDARD VOLTAGE SELECTION TABLE .........8

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

PARTS LIST ....................................................... 15 - 16

WIRING DIAGRAM

AVR DST-100-2FAK ............................................. 17

Connection Schematic ............................................. 18

Proprietary Information

This publication is the property of Northern Lights, Inc.

OLXE 03/10

3

Introduction

This manual describes procedures for operation,
maintenance, inspection and adjustment. It will help the
operator realize peak performance through effective,
economical and safe operation.

• Read this manual carefully BEFORE operating the
generator.

• Study this manual until proper operation becomes
personal habit.

• Operation, inspection, and maintenance should be
carried out carefully. Safety must be given the fi rst .
priority.

Safety Rules

• To insure years of trouble-free operation, the
specifi ed maintenance is important and should be
performed.

• Electrical equipment should always be kept
clean. Oil, dust, moisture and salt are all harmful
to genera tors.

• Insulation Resistance and Dielectric: When
measuring insulation resistance and dielectric, be

sure to disconnect the AVR and rectifi er.

• Be sure that the regulator is shut off by switching the
CPR (circuit breaker) on the AVR to the off position
when the unit is run ning at less than rated speed, or
when the unit is to be run but no power generation is
required.

• Before starting your generator, be sure oper ating
conditions are safe.

• Ventilation: When selecting the installation site, be
sure that the area is well ventilated and that ambient
temperature does not exceed 40°C.

• Be sure to provide generator with cover and

protection when op erating outside.

LX-E Series AC generators are based on

BS 4999 part 20 and IEC34-5, IP22.

• Be careful with electricity. Do not touch rotating
parts.

• Ambient Environmental Conditions

a) Gas: Do not use in an environment of corrosive

or fl ammable gas (gasoline, hydrogen sulfi de,
meth ane 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.

OLXE 03/10

4

Model and Serial Numbers

GENERATOR END MODEL NUMBER

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.

• The generator END serial number is on a metal tag attached
to the generator end.

• The generator SET serial number is on a separate metal tag
attached to the generator end. It may be a fi ve by one inch tag
installed directly below the gen erator end tag. Or, it may look
like the illustrations below. Please use the generator SET number
in cor respondence or when ordering parts.

Generator Set Data

Set Serial
Set Model

AC Generator Data

Model No.
Serial No.

DUTY

KW

KVA

RPM

HERTZ

PHASE

°C RISE

RULE

Northern Lights, Inc., WA USA

www.northern-lights.com

WIRE

INSUL

AMB°C

PF

VOLTS

VOLTS

AMPS

AMPS

Figure 1: Generator Set Serial Number Plate

OLXE 03/10

5

Mechanical Construction

STATO R

The stator frame is fabricated from rolled steel. The
round construction provides rigidity and strength to
resist excessive mechanical shocks. The stator core is
made of high quality silicon steel plates coated with
insulating fi lm for prevention of eddy currents. The
core is positioned along the internal surface of the
frame. The exciter fi eld core is made of special steel
plates capable of retaining a high degree of residual
magnetism.

BEARINGS

The long-life ball bearings are sealed to prevent grease
from escaping and to keep dirt out.

ROTOR

The rotor shaft is made of high quality carbon steel,
and is designed and manufactured to be mechanically
durable. The rotor is a salient revolving fi eld type
with the main fi eld core made from special steel plates
having superior magnetic characteristics. The fi eld
core elements, exciter rotor, rotary rectifi er and
cooling fan are integral parts of the same shaft.

COUPLING WITH PRIME MOVER

LX-E series single bearing generators make centering and
direct coupling easy. Coupling bolt torque is 35 ft.-lb.

GROUNDING

The neutral is not grounded to the frame unless
specifi ed.

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 extensive storage
time, check the resistance of the coil insulation in accor­dance with this manual (see MAINTENANCE, page

11) before operation. Be sure there are no abnormal
sounds or any overheating during operation.

OLXE 03/10

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