APPLICATION

 

& ENGINEERING DATA

SG020 / SG025

GENERATOR SPECIFICATIONS

TYPE

Two-pole, revolving field

ROTOR INSULATION

Class F

STATOR INSULATION

Class F

TOTAL HARMONIC DISTORTION

<3%

TELEPHONE INTERFERENCE FACTOR (TIF)

................................<50

ALTERNATOR

Self-ventilated and drip-proof

BEARINGS (PRE-LUBED & SEALED)

1

COUPLING

Direct, Flexible Disc

LOAD CAPACITY (STANDBY)

100%

NOTE: Emergency loading in compliance with NFPA 99, NFPA 110, paragraph 5-13.2.6. Generator rating and performance in accordance with ISO8528-5, BS5514, SAE J1349, ISO3046 and DIN6271 standards.

EXCITATION SYSTEM

 

DIRECT

DC excitation system

 

Low-velocity brushes and slip rings

REGULATION

Solid-state

....................................................................................

+2% regulation

GENERATOR FEATURES

Two pole, revolving field generator, directly connected to the engine shaft through a heavy-duty, flexible disc for permanent alignment.

Generator meets the temperature rise standards for class "F" insulation as defined by NEMA MG1-32.6.

All prototype models have passed a three-phase symmetrical short circuit test to assure system protection and reliability.

All prototype models are tested for motor starting ability by measuring the instantaneous voltage dip with a waveform data acquisition system.

All models utilize an advanced wire harness design for reliable interconnection within the circuitry.

Magnetic circuit, including skewed stator design, provides a minimal level of waveform distortion and an electromagnetic interference level which meets accepted requirements for standard AM radio, TV, and marine radio telephone applications.

Voltage waveform deviation, total harmonic content of the AC waveform, and T.I.F. (Telephone Influence Factor) have been evaluated to acceptable standards in accordance with NEMA MG1-32.

Alternator is self-ventilated and drip-proof constructed.

Fully life-tested protective systems, including "field circuit and thermal overload protection" and optional main-line circuit breakers capable of handling full output capacity.

System Torsional acceptability confirmed during Prototype Testing.

Generac H-100 Digital Control Panel

ENGINE SPECIFICATIONS

MAKE

GENERAC

MODEL

MMC 4G15

CYLINDERS

4 in-line

DISPLACEMENT

1.5 Liter (91.5 cu. in.)

BORE

75.5 mm (2.97 in.)

STROKE

82 mm (3.23 in.)

COMPRESSION RATIO

9.4:1

INTAKE AIR

Naturally Aspirated

NUMBER OF MAIN BEARINGS

5

CONNECTING RODS

4-Drop forged steel

CYLINDER HEAD

S.O.H.C.

PISTONS

4-Aluminum Alloy

CRANKSHAFT

Drop Forged Steel

VALVE TRAIN

 

 

LIFTER TYPE

Rocker Arm Type

INTAKE VALVE MATERIAL

High Temperature Alloy Forged

EXHAUST VALVE MATERIAL

High Temperature Alloy Forged

VALVE SEATS

Replaceable

ENGINE GOVERNOR

 

 

ELECTRONIC

Standard

 

FREQUENCY REGULATION, NO-LOAD TO FULL LOAD.

.. Isochronous

 

STEADY STATE REGULATION

+0.25%

LUBRICATION SYSTEM

 

 

TYPE OF OIL PUMP

Gear

OIL FILTER

Full flow, cartridge

CRANKCASE CAPACITY

3.8 Liters (4 qts.)

COOLING SYSTEM

 

 

TYPE OF SYSTEM

Pressurized, closed recovery

WATER PUMP

Pre-lubed, self-sealing

TYPE OF FAN

Pusher

NUMBER OF FAN BLADES

6

DIAMETER OF FAN

380 mm (15.0 in.)

COOLANT HEATER

120V, 500 W

FUEL SYSTEM

 

 

FUEL

 

 

Natural Gas or L.P. Vapor

Standard

L.P. Liquid Withdrawal

Optional

CARBURETOR

Down draft

SECONDARY FUEL REGULATOR

Nat. Gas or L.P. Vapor Systems

HOT WATER VAPORIZER

L.P. Liquid Withdrawal Systems

AUTOMATIC FUEL LOCKOFF SOLENOID

Standard

OPERATING FUEL PRESSURE VAPOR SYSTEMS

7" to 15" H2O

ELECTRICAL SYSTEM

 

 

BATTERY CHARGE ALTERNATOR

15 Amps at 12 V

STARTER MOTOR

12 V

RECOMMENDED BATTERY

(1) - 12 V, 530 CCA, 26F

GROUND POLARITY

Negative

Rating definitions - Standby: Applicable for supplying emergency power for the duration of the utility power outage. No overload capability is available for this rating. (All ratings in accordance with

BS5514, ISO3046 and DIN6271). Prime (Unlimited Running Time): Applicable for supplying electric power in lieu of commercially purchased power. Prime power is the maximum power available at variable load. A 10% overload capacity is available for 1 hour in 12 hours. (All ratings in accordance with BS5514, ISO3046, ISO8528 and DIN6271).

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Generac Power Systems SG025, SG020 manual Application Engineering Data, Generator Specifications, Generator Features

SG020, SG025 specifications

Generac Power Systems has long been recognized as a leader in backup power solutions, and their SG025 and SG020 models exemplify this commitment to quality and innovation. These generators, designed for commercial applications, provide reliable power and are engineered to meet the demands of various industries, including construction, healthcare, and hospitality.

The SG025 and SG020 generators are equipped with robust engines that ensure dependable performance. Both models utilize a powerful Generac engine, built for longevity and efficiency. Their design incorporates advanced noise-reduction technology, enabling them to operate quietly, which is crucial for urban environments or noise-sensitive areas. The compact footprint of these models allows for easy installation in limited spaces, facilitating a seamless integration into existing power systems.

One of the standout features of the SG025 and SG020 is their advanced digital control technology. The user-friendly interface allows operators to easily monitor performance metrics, make adjustments, and schedule maintenance, ensuring that the generators remain in optimal working condition. These models also come with an integrated Automatic Voltage Regulator (AVR) that helps maintain voltage stability, protecting sensitive equipment from damage caused by voltage fluctuations.

Fuel efficiency is another critical aspect of the SG025 and SG020. Both generators are designed with energy conservation in mind, enabling users to minimize fuel expenses without compromising performance. The dual fuel capability is a notable feature; both models can run on natural gas or propane, providing flexibility based on the user’s preference or availability.

Additionally, the SG025 and SG020 models come equipped with comprehensive safety features. These include automatic shutdown capabilities in the event of low oil pressure or high temperature, ensuring protection for the engine and enhancing the longevity of the equipment. Moreover, they feature an intuitive control panel with detailed diagnostic indicators, making troubleshooting straightforward.

In summary, the Generac SG025 and SG020 generators are powerful, efficient, and reliable solutions for a diverse range of commercial applications. With their advanced engineering, user-friendly controls, and robust safety features, they are designed to withstand the rigors of daily use while providing peace of mind through uninterrupted power supply. Businesses looking for dependable backup power should certainly consider these models from Generac as they represent an excellent investment in reliable energy solutions.