EasyManua.ls Logo

Generac Power Systems QT 5.4L User Manual

Generac Power Systems QT 5.4L
76 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #13 background image
GENERATOR AC LEAD CONNECTIONS
See “Voltage Codes”. This generator may be rated
at any one of three voltages, either single-phase or
three-phase. The electrical wires in the unit’s AC con-
nection (lower) panel should be installed according to
the number of leads and the voltage/phase required
for the application. If there are any questions regard-
ing lead connection, refer to the wiring diagrams at
the back of this manual.
Voltage codes apply to the type of stator assembly
installed on a particular generator.
FOUR-LEAD, SINGLE-PHASE STATOR
Four-lead generators (see Figure 7.1) are designed to
supply electrical loads with voltage code “A” (240V,
1-phase, 60 Hz). Electrical power is produced in the
stator power windings. These windings were con-
nected at the factory to the main circuit breaker as
shown in Figure 7.1.
The rated voltage between each circuit breaker ter-
minal is 240V. The rated voltage between each circuit
breaker terminal and the neutral point 00 is 120V.
Figure 7.1 — Four-lead, Single-phase Stator
ALTERNATOR POWER WINDING
CONNECTIONS
3-PHASE ALTERNATORS
The generator is designed to supply 3-phase electri-
cal loads. Electric power is produced in the alterna-
tor power windings. These windings were connected
at the factory to the main circuit breaker with a “Y
configuration as shown in Figures 7.2 and 7.3.
The rated voltage between circuit breaker terminals
E1-E2, E1-E3 and E2-E3 is either 480V or 208V
depending on the model.
The rated voltage between each circuit breaker termi-
nal and the neutral point 00 is either 277V or 120V
depending on the model.
Figure 7.2 — Stator Power Winding
Connections - 3-phase, 277/480V (6 Lead)
S6
E
3
S3
INTERNAL
CO
NNE
C
TI
O
N
S
L-
N
L
-
L
S4
E2
S5
S1
E1
NE
U
TRA
L
Figure 7.3 — Stator Power Winding
Connections - 3-phase, 120/208V (6 Lead)
E
3
E2
00
(
NEUTRAL
)
E1
L
-
L
L
-
N
S1
S1
S4
S4
S
6
S6
S3
S3
S5
S5
S2
S2
7-1
Standby Generator Sets
General Information
ACConn001 Rev. 0 08/05

Table of Contents

Question and Answer IconNeed help?

Do you have a question about the Generac Power Systems QT 5.4L and is the answer not in the manual?

Generac Power Systems QT 5.4L Specifications

General IconGeneral
Voltage120/240 V
Displacement5.4L
Fuel TypeNatural Gas / Liquid Propane
EngineGenerac
Engine Type4-Cycle

Summary

Safety Rules

General Hazards

General safety precautions and responsibilities for operators and technicians.

Electrical Hazards

Warnings about high voltages, shock prevention, and proper grounding.

Fire Hazards

Precautions related to fire prevention, including extinguisher use.

Explosion Hazards

Safety measures to prevent explosive gas buildup and fuel handling.

Introduction

Read This Manual Thoroughly

Emphasizes understanding the manual before operation.

Operation and Maintenance

Operator's responsibility for safe use and timely maintenance.

How to Obtain Service

Guidance on contacting authorized dealers for service and parts.

Identification Record

Data Label

Locates and describes the unit's data label information.

Identification Code

Explains how to interpret the generator's identification code.

Voltage Codes

Lists and defines the voltage codes used in identification.

Groups and Assembly Numbers

Explains how to find assembly numbers for drawings.

Equipment Description

Engine Oil Recommendations

Details recommended engine oil types and grades by temperature.

Coolant Recommendations

Advises on correct coolant mixture and handling precautions.

Engine Protective Devices

Coolant Temperature Sensing

Describes coolant temp monitoring and shutdown trigger.

Low Coolant Level

Explains the low coolant sensor and shutdown mechanism.

Oil Pressure Sensing

Details the oil pressure sensor and shutdown mechanism.

Overcrank Shutdown

Describes shutdown for failed starting attempts.

Overspeed Shutdown

Explains engine shutdown due to excessive speed.

RPM Sensor Loss Shutdown

Covers shutdown due to loss of engine speed signal.

DC Fuse

Locates and explains the control panel DC fuse.

Fuel Systems

Fuel Requirements

Specifies fuel types, Btu content, and pressure requirements.

Natural Gas Fuel System

Details requirements for natural gas fuel.

Propane Vapor Withdrawal Fuel System

Explains vapor withdrawal systems and limitations.

LP Fuel System

Describes liquid propane systems and vaporizer use.

Specifications

Generator

Lists technical specifications for the generator.

Engine

Lists technical specifications for the engine.

Engine Lubrication System

Details oil pump, filter, and capacity.

Cooling System

Lists cooling system parameters like pump, fan, capacity, and temps.

Fuel System

Specifies fuel type, carburetor, regulator, and pressure.

Electrical System

Details battery charger, voltage regulator, and system voltage.

Installation

Preparation Before Start-Up

General steps to prepare the generator before initial operation.

Transfer Switch

Requirements and considerations for installing a transfer switch.

Fuel System

Ensures correct fuel supply, pressure, purging, and leak testing.

Generator Set Lubrication

Checks and fills engine oil and gearbox oil.

Prior to Initial Start-Up

Crucial pre-start checks for engine fluids and preparation.

Engine Coolant

Verifies proper coolant filling and system integrity.

Belt Tension

Checks fan belt tension and condition.

Electrical System

Ensures proper grounding, battery charge, and connections.

Initial Inspection for QT Genset Startup

Checklist of items to inspect before initial startup.

Operation

Generator Control and Operation

Refers to the control panel manual for detailed operation.

Operating Unit with Manual Transfer Switch

Procedure for manual transfer switch operation.

Engine Start-up and Transfer

Steps for starting the engine and transferring load manually.

Retransfer and Shutdown

Procedure to transfer load back to utility and shut down the generator.

Operating Unit with Automatic Transfer Switch

Notes on operating with an automatic transfer switch.

Maintenance

Maintenance Performed by Authorized Service Facilities

Lists maintenance tasks for authorized service.

Cooling System

Emphasizes keeping air intake/outlets clear for proper cooling.

Checking Fluid Levels

General guidance on checking engine oil and battery fluid.

Check Engine Oil

Detailed steps for checking engine oil level.

Battery Fluid

Instructions for checking battery electrolyte level.

Service Schedule

Service Maintenance Interval Information

Explains the different service levels and intervals.

Troubleshooting Guide

Notes

Warranty

Related product manuals