Generator AC Lead Connections

Standby Generator Sets

General Information

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)

S1	E1
INTERNAL
CONNECTIONS
			L-L
S6	S4
		NEUTRAL
		NEUTRAL
	S5
E3 S3		S2	E2
		S2	E2

L-N

Figure 7.3 — Stator Power Winding

Connections - 3-phase, 120/208V (6 Lead)

S1 S1

	S4		S4		L-L
				00 (NEUTRAL)
	S6		S5

S3	S6	S5		S2

E3	S3			E2
				S2

L-N

7-1

08/05

0 .Rev ACConn001

SG020 specifications

Siemens SG020 is a cutting-edge turbine designed for a variety of energy applications, particularly in the field of renewable energy generation and industrial processes. As one of the latest innovations from Siemens, this turbine is engineered for efficiency, reliability, and environmental sustainability.

One of the main features of the SG020 is its advanced aerodynamic design. This turbine is built with large rotor blades that optimize wind capture, allowing it to function effectively even in low-wind conditions. The blades are also constructed from lightweight composite materials, enhancing both performance and durability. This design maximizes energy output while minimizing wear and tear, thereby extending the operational lifespan of the turbine.

Incorporated within the Siemens SG020 is an intelligent control system that utilizes state-of-the-art sensors and software algorithms. This technology continuously monitors wind conditions and turbine performance, automatically adjusting the blade pitch and rotor speed to optimize energy production. The smart grid capabilities of the turbine allow it to integrate seamlessly with existing energy systems, making it a flexible solution for various applications, from powering remote communities to integrating with larger industrial facilities.

Another key characteristic of the SG020 is its commitment to sustainability. The turbine is designed to operate with minimal environmental impact, producing clean energy while reducing carbon emissions. Siemens has implemented eco-friendly manufacturing processes and materials in the production of the turbine, underlining the company’s dedication to environmentally responsible energy solutions.

Maintenance of the SG020 is also streamlined through innovative technology. Predictive maintenance features leverage data analytics to anticipate potential issues before they arise, allowing for timely interventions that further reduce downtime and maintenance costs. This enhances the overall reliability of the turbine, making it a dependable choice for energy generation.

The SG020 stands out as a flexible and efficient solution for delivering renewable energy. With its advanced technologies, robust design, and commitment to sustainability, it represents Siemens’ ongoing pursuit of innovation in the energy sector, paving the way for a more sustainable future in power generation.

Siemens SG020 owner manual Generator AC Lead Connections, Alternator Power Winding Connections

Models: SG020