SYNCHRONOUS ALTERNATORS G Plus Line & AG10 Line

SYNCHRONOUS ALTERNATORS G Plus Line & AG10 Line. WEG’s extensive experience in the manufacturing of alternators in addition to modern design, production capacity and testing facilities, has resulted in a range of brushless synchronous alternators.
Available up to 4,200 kVA, the G Plus and AG10 lines are suitable for all emergency, prime power or continuous operation in the areas:

• Industrial
• Commercial
• Marine
• Telecommunication
• Mining
• Residential
• Irrigation
• Hospitals
• Rural areas
• Airports and others

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Technical Features:

• Output power: up to 2,455 kVA (others upon request)
• Frames: 160 to 400 (IEC)
• Low voltage: 110 to 690 V
• High voltage: 2,300 to 13,800 V (upon request)
• Frequency: 50 to 60 Hz
• Degree of protection: IP23 (standard), IP44 to IP55W (upon request)
• Insulation class: H (180 °C) low voltage and F (180 °C) high voltage
• Winding pitch: 2/3 (160 to 315)
• THD: ≤3% (phase-phase, no load)
• Number of poles: 4 poles (standard), 6 and 8 poles (upon request)
• Leads: 12 or 6 leads

Notes:
1) The three-phase alternators with 12 leads can operate in 190/208/220/240/380/440/480 V in 60 Hz and 120/190/208/380/400 V in 50 Hz.
2) The three-phase alternators can be reconnected to supply single-phase voltages from 110 to 480 V

Abrasive Dust
Additional protections are recommended when the alternator is used in environments where abrasive dust can penetrate through the ventilation.
Altitude (meters above sea level) 1,000 1,500 2,000 2,500 3,000 3,500 4,000 K factor 1 0.97 0.94 0.90 0.86 0.82 0.80 Ambient temperature (°C) 40 45 50 55 K factor 1 0.95 0.92 0.88 Although the alternator coils are protected against abrasive environments, severe conditions may require additional protections, such as: baffle, closed cabinet, filters and other proper protections. Contact WEG for recommendations.

Outdoor Applications
All alternators for outdoor applications must be covered with a metal shelter with proper openings for ventilation. This protection must be projected to prevent direct contact of the alternator with rain, snow or dust. Space heaters are recommended, depending on the location and application. Contact WEG for recommendations about required protections.

Sea/Marine Environments
WEG also operate in marine applications (shore, islands, small vessels, etc.) and naval (medium and large boats, ships, yachts, platforms, military vessels, etc.). For those applications, WEG has special manufacturing process technology.

Insulation Class
WEG alternators have default H (180 °C) insulation class. The insulation class defines the highest temperature that the equipment can stand continuously without affecting its useful life.
The temperature limits are defined as per standard IEC 60085.

Operating Characteristics
Standard Protection Rate
The alternators are mechanically protected against finger touch, solid foreign bodies of diameter over 12 mm and against
spraying water which is the protection rate IP23 as per standard IEC 60034-part 5.
Voltage Regulator
The automatic voltage regulator (AVR) has a function called U/F which, when properly enabled, protects the alternator against operations below the rated speed, reducing excitation current. A fuse in series with auxiliary winding installed into terminal box or in the voltage regulator protects the alternator against several abnormal situations during operation, such as:

• Reference loss
• Connection of the auxiliary coil in short circuit
• Output connection of the regulator in short circuit
• Operation in low speed
• Damages to the voltage regulator

 

Excitation with Auxiliary Coil (I-PMG)
A special feature of WEG alternators is the excitation system with auxiliary coil that ensures fast response, optimum stability, sustained short-circuit current of 300% of the rated current for 10 seconds, fast voltage recovery process and excellent performance at the start of induction motors. The auxiliary coil is responsible for supplying power to the voltage regulator, regardless of voltage in the alternator terminals or load variation during operation. The auxiliary coil is standard in all power range of the G Plus and AG10 lines (low voltage 4 poles

Main Exciter Stator
The main exciter stator features permanent magnets, which ensures the maintenance of the alternator residual voltage, without requiring external supply for build-up after long stops.
Excitation with External PMG
As an option, WEG alternators line allows the use of an auxiliary exciter with permanent magnets (external PMG).

Accessories/Specialties
Depending on the need or specification, accessories that allow greater flexibility in all application fields are optionally available, such as:

• Temperature detectors in the windings and bearings
• Space heaters (anti-condensation)
• Current transformer
• Double bearing B35T or B3T
• Auxiliary exciter (external PMG)
• Protection IP23W, IP44, IP44W, IP54, IP54W, IP55 and IP55W
• Special coating scheme (custom color