Power systems engineering
An unmatched range of consulting engineering, analytical studies, and specialized field service
Aligning with your specific needs, Siemens can scale service agreements and on-call services across an unrivaled portfolio of Power Systems Engineering Services, delivered by highly trained experts you can trust.
An extensive lineup of specialized field services for total power solutions
Siemens offers experienced power systems specialists to help optimize your systems, backed by a national network of over 100 field offices across the country. Our professional engineers and certified technicians will help you:
• Maximize system reliability and availability
• Determine correct capital equipment ratings and associated protective relay system configuration and settings
• Improve safety for employees and subcontractors
• Optimize system performance
• Improve power quality
• Establish "Selective Coordination" for protection systems in emergency power applications per NEC 700, 701, and 708
• Extend equipment lifecycles
• Reallocate maintenance resources to core business needs
• Protect sensitive electronics
• Reduce operation, maintenance, and repair costs.
In addition, the power system specialists from Siemens also provide Streamlined Power System Construction Studies (PSCS) according to the Division 16000 specifications included in most construction projects.
This means we can:
• Verify selected equipment is correctly applied prior to release for manufacture
• Determine protective device settings required for selective coordination
• Provide setting tabulations for implementation during commissioning
• Confirm that applicable code requirements are satisfied.
Short circuit study
Power system specialists from Siemens will detemine the
maximum duty that your system’s protective devices,
transformers, and interconnections will be subjected to in the
event of three-phase and/or line-to-ground fault conditions. In
addition, we will provide basic information required to establish
protective relay settings.
Under fault conditions, systems should isolate the faulted area
to minimize disturbance to the remaining system and
simultaneously limit damage to equipment. We will review the
characteristics of your protective devices and provide the
settings necessary to ensure that your system functions
optimally should a fault occur.
As AC drives have become increasingly prevalent in the industry,
we have seen the introduction of destructive harmonics to
many systems. The power quality experts from Siemens will
determine the extent and severity of harmonics in your system
then recommend the appropriate means of mitigating potential
Transient stability study
This study is particularly valuable for facilities that generate
their own power and those with very large motors. Our power
system specialists will study the transient response of rotating
equipment following system disturbances and analyze system
behavior in relation to the power company tie.
Protective device evaluation
With the objective of achieving optimum protection, we will
perform the necessary calculations required to select the
interrupting rating of power fuses, circuit breakers, and other
Power quality assessment
In recent years with the proliferation of sensitive electronic
equipment, power quality has become a major concern for
industry. We perform structured, step-by-step studies with
timely diagnosis and expert solutions to the complex challenges
of utility and end-user power quality issues.
Arc flash study
NFPA 70E requires that an Arc Flash Hazard Analysis be
performed prior to work on electrical equipment. Siemens will
determine the incident energy levels, arc flash boundary (AFB),
and required level of personal protective equipment (PPE).
With the goal of ensuring proper protection and reducing the
possibility of excessive transient overvoltages during line-to-ground
faults, Siemens engineers will determine and
recommend the most appropriate form of system grounding
(including derived, low resistance, and high resistance).
Voltage unbalance study
Voltage flicker and poor voltage regulation are a common
concern on systems with large arc furnaces. The experts from
Siemens use this study to develop comprehensive solutions that
limit the effects of voltage irregularities and protect sensitive
Ensuring that large capital equipment such as power
transformers and above NEMA motors are properly rated and
fulfill design requirements is a complex and difficult process.
The consequence of an incorrect rating can add considerably to
equipment costs as well as play havoc with schedules. Siemens
will develop the necessary basis of design so that your new or
existing equipment is correctly applied and properly specified
for subsequent manufacturing, modification, or repair.
To schedule an Arc Flash Hazard Analysis, or for general
information about Electrical Services from Siemens, call