Fuel System Requirements And Recommendations; Stationary Emergency Generator Ac Lead Connections; Four-Lead, Single-Phase Stator; Stationary Emergency Generator And Load Compatibility - Generac Power Systems 005342-6 Owner's Manual

General Information

FUEL SYSTEM REQUIREMENTS AND RECOMMENDATIONS

• Diesel Fuel System: See Chapter 8 of Engine-Generator Standby
Electric Power Systems Installer's Guide and Reference Manual
(part no. 046622).
• Gaseous Fuel System: See Chapter 9 of Engine-Generator
Standby Electric Power Systems Installer's Guide and Reference
Manual (part no. 046622).
STATIONARY EMERGENCY
GENERATOR AC LEAD
CONNECTIONS
The electrical wires in the unit's AC connection (lower) panel
should be installed according to the number of leads and the
voltage/phase required for the application. If there is any question
regarding lead connection, refer to the wiring diagrams at the back
of this manual.

FOUR-LEAD, SINGLE-PHASE STATOR

Four-lead generators are dual voltage coils or windings (Figure
1.2). Units may be assigned the following voltage code:
• "A" units are rated 120/240 VAC, single-phase, 60 Hertz.
Each stator winding in this case delivers a 120 VAC output, and
connecting the two windings series results in a 240 VAC output.
The neutral line is formed by a junction of stator leads 22 and
33. Therefore, connection of 120 VAC (60 Hertz) or 110 VAC (50
Hertz) loads across leads 11 and neutral, or across leads 44 and
neutral can be made.
Figure 1.2 – Four-lead, Single-phase Stator
8
STATIONARY EMERGENCY
GENERATOR AND LOAD
COMPATIBILITY
The generator must be fully compatible with the rated voltage,
phase and frequency of the connected electrical loads. The gen-
erator, connected electrical devices, or both, can be damaged if
voltage, phase and frequency are not compatible.
This manual assumes that the standby generator has been
properly selected, installed and interconnected by a competent,
qualified electrician or installation contractor. Once the installa-
tion is complete, do nothing that may result in non-compatibility
between the generator and connected electrical loads.

STARTING AIDS

This Stationary Emergency Generator is equipped with the follow-
ing starting aids that serve to provide quicker, easier starts under
varying climactic conditions.
This generator has been mounted with an engine coolant heater
and a battery charger. These aids are powered by a NORMAL
(UTILITY) power source during non-operating periods.

ENGINE COOLANT HEATERS

This unit is equipped with an engine coolant (block) heater (Figure
1.3). It is powered by a circuit supplied by the customer. The
heater acts to heat the engine coolant when the unit is not operat-
ing. This action keeps the engine warm even in cold weather, thus
helping ensure quicker starts. Heated coolant in the engine rises
continuously drawing cold coolant into the heater, thus making
certain of a constant flow of warm coolant through the engine.
Figure 1.3 – Typical Engine Coolant Heater

BATTERY CHARGERS

All generators may be ordered with either a 2A or 10A battery
charger installed in the control panel.
NOTE:
OUTPUT