Power Systems Lab

Course Description

Power Systems Lab enables students to apply knowledge of analysis of electrical power systems and energy conversion, covering 3-phase load, per-unit quantities, circuit constants, rotating machines, 3-phase transformers, transmission lines, power flow, stability and fault calculations.

Within the SCNS taxonomy, ETP is the Engineering Technology Power prefix and the L suffix marks a laboratory course. Daytona State publishes this at 1 credit, offered fall, with ETP4240 as corequisite and a $21.00 laboratory fee.

The laboratory is where three-phase power stops being a phasor diagram. Measuring a real transformer's losses, watching an induction motor's inrush current on start, seeing power factor change as load changes, and connecting a three-phase transformer bank the wrong way round once — these are the experiences that make the analysis mean something. It is also where the safety habits are formed, and those matter more here than in most laboratories.

⚠ The contact-hour figure for this laboratory is derived

Daytona State publishes no contact-hour figure for this course, and no live guide in this repository provides an anchor within this prefix. The figure shown is derived from the institution's one-credit laboratory convention of 30 hours — CET1114L, CET3198L, PHT2211L, PHT2214L and ETC4241L are all published at 1 credit and 30 hours. Treat it as indicative and confirm the actual schedule with the department.

⚠ The convention is not universal. This repository records that Daytona State's RTE laboratories run at 32 hours rather than 30, so the institution-wide figure is a reasonable default rather than a rule. It is applied here because nothing in this prefix contradicts it.

Learning Outcomes

Required Outcomes

• Work safely around energised electrical equipment.
• Apply lockout/tagout and verify de-energisation correctly.
• Describe arc flash hazard and the protection required.
• Use electrical instrumentation correctly and safely.
• Measure voltage, current, power, and power factor in AC circuits.
• Measure and analyse single-phase circuit behaviour.
• Connect and measure balanced three-phase loads in wye and delta.
• Verify line and phase relationships experimentally.
• Measure three-phase power using accepted methods.
• Demonstrate power factor correction and measure its effect.
• Determine transformer parameters from open and short circuit tests.
• Compute transformer efficiency and regulation from measurements.
• Connect three-phase transformer banks and verify their phase relationships.
• Determine transformer polarity experimentally.
• Operate and characterise a rotating machine.
• Measure induction motor performance and construct its characteristic.
• Observe starting current and describe its consequences.
• Demonstrate synchronous machine behaviour.
• Model a transmission line and measure its behaviour.
• Measure voltage regulation across a modelled line.
• Apply per-unit calculations to measured data.
• Compare measured results with predicted values and explain differences.
• Assess and report experimental uncertainty.
• Write a clear technical laboratory report.

Optional Outcomes

• Demonstrate protective relay operation.
• Demonstrate fault behaviour in a controlled setting.
• Measure power quality and harmonics.
• Demonstrate grounding and its effects.
• Use power system simulation software alongside measurement.
• Observe a utility or substation facility.

Major Topics

Required Topics

• Electrical laboratory safety
• Lockout/tagout and verification
• Arc flash awareness
• Electrical instrumentation
• Measuring voltage, current, power, and power factor
• Single-phase circuit measurement
• Three-phase wye and delta connection
• Line and phase verification
• Three-phase power measurement
• Power factor correction
• Transformer open and short circuit tests
• Efficiency and regulation
• Three-phase transformer banks
• Transformer polarity
• Rotating machine operation
• Induction motor characteristics
• Starting current
• Synchronous machine behaviour
• Transmission line modelling
• Voltage regulation
• Per-unit applied to measurements
• Measured versus predicted
• Uncertainty
• Technical reporting

Optional Topics

• Protective relay demonstration
• Fault behaviour
• Power quality and harmonics
• Grounding demonstration
• Simulation alongside measurement
• Utility or substation visit

Resources & Tools

• Your own calculator and a systematic solution format — given, find, assumptions, working, answer with units, sanity check. Adopting one format now is worth more than any single technique in these courses.
• ABET (abet.org) — free accreditation lookup; check which commission accredits your programme before assuming a licensure pathway.
• NCEES (ncees.org) — free information on the FE and PE examinations and state-by-state requirements; the FE reference handbook is free and is a superb formula reference for these courses.
• Florida Board of Professional Engineers (fbpe.org) — free; the authority on Florida licensure.
• Engineering Toolbox and NIST reference data — free property tables and unit conversions; verify anything critical against a primary source.
• Professional societies — ASME, IEEE, ASHRAE, IISE, and ASQ all offer inexpensive student membership, standards access, and local chapter meetings where employers recruit.
• Your programme's laboratory and your instructors — the equipment time is the part you cannot get elsewhere, and it is already paid for.
• Internships and co-op placements — the single strongest predictor of employment at graduation in this field. Start looking a year before you think you should.
• NFPA 70E — the standard for electrical safety in the workplace; the single most important document for anyone intending to work on or near electrical equipment.
• IEEE Power & Energy Society (ieee-pes.org) — the professional body for this field; student membership is inexpensive and local chapter meetings are where utility engineers are.
• Florida Public Service Commission (floridapsc.com) — free; storm hardening plans, reliability reports, and rate filings are public and genuinely informative.
• Utility careers pages — Florida's utilities recruit engineering technology graduates directly and run internship programmes; apply early and repeatedly.

Career Pathways

• Mechanical engineering technologist and technician — SOC 17-3027.
• Electrical and electronic engineering technologist and technician — SOC 17-3023.
• Industrial engineering technologist and technician — SOC 17-3026.
• Manufacturing and production engineering support — process improvement, tooling, and quality.
• Quality engineering and inspection — SOC 51-9061 at technician level, rising into quality engineering.
• Maintenance and reliability engineering — consistently in demand and under-applied for.
• Controls, automation, and systems integration — among the best paid technical work available without a four-year engineering degree.
• Utilities and power — a substantial Florida sector, with generation, transmission, and distribution employment plus storm restoration work.
• Aerospace, defence, and space — Florida's Space Coast is one of the densest concentrations of this work in the country; ⚠ many roles require U.S. citizenship and some a security clearance.
• Theme park and attraction engineering — a genuine and distinctive Florida employer of mechanical, controls, and maintenance engineering talent.
• Building systems, HVAC, and energy management — steady work with a strong Florida market.
• Continue to a bachelor's or a graduate degree — Daytona State's engineering technology bachelor's programmes are the direct route, and see the licensure note about what that degree does and does not qualify you for.
• Utility distribution and transmission engineering — steady, well-paid, and persistently short of candidates.
• Substation design and protection engineering — a specialisation with strong demand.
• Power system studies — load flow, short circuit, and arc flash analysis; frequently done by consultancies and always needed.
• Electrical safety and arc flash assessment — a recognised speciality built directly on this course's content.
• Renewable interconnection and distributed generation engineering — growing quickly in Florida.
• Industrial plant electrical engineering and maintenance.

Special Information

⚠⚠ Three-phase laboratory work is genuinely dangerous — build the habits here

• The voltages and available currents in a power laboratory can kill, and unlike an electronics bench there is no meaningful margin for a casual mistake.
• ⚠⚠ De-energise before making or changing any connection. Every connection, every time — the incidents happen during the "quick change" nobody bothered to switch off for.
• Verify de-energisation with a tester you have just proved works on a known live source, and prove it again afterwards.
• Have the circuit checked before energising. Getting a three-phase connection checked by the instructor is standard practice, not a lack of confidence.
• ⚠ Never work alone, and know where the emergency stop and the main disconnect are before you start.
• One hand where practical, and keep the other clear. Current across the chest is what kills.
• Remove rings, watches, and metal jewellery. A ring across a busbar produces a severe burn instantly.
• ⚠ Transformers and machines store energy and can backfeed. A de-energised primary does not mean a de-energised secondary, and a spinning machine is a generator.
• Wait for rotation to stop before touching anything on a machine, and respect couplings and shafts.
• Treat capacitors as charged until proved otherwise, particularly in power factor correction work.
• ⚠ Report every incident and near miss. The habits you form in this laboratory are the ones you will take into a substation.

⚠ Measure carefully — three-phase measurement is easy to get subtly wrong

• Know whether you are measuring line or phase quantities. Confusing them produces answers wrong by the square root of three, and the number still looks plausible, which is what makes the error persistent.
• Get the instrument connection right. Power measurement requires correct current and voltage connection with correct polarity; reversing one gives a negative or nonsensical reading.
• ⚠ Watch phase sequence. It determines rotation direction, and connecting a machine with reversed sequence runs it backwards — which matters a great deal with a pump or a fan attached.
• Record what you actually measured, including instrument ranges and settings, not just the number.
• Expect losses. Measured efficiency below the ideal is the real behaviour of real equipment, not an error — explaining where the loss went is the point of the experiment.
• Check power factor as well as magnitude. Real and apparent power differ, and reporting one as the other is a standard student error.
• Compare against the per-unit sanity ranges from the lecture course — measured impedances that fall far outside them indicate a measurement or connection problem.
• Report uncertainty honestly and never adjust data toward the expected result.

⚠⚠ Arc flash — the hazard that electrical students most underestimate

• Electrical work has two distinct hazards, and most people think only of one. Shock is the familiar one. Arc flash is the other, and it injures and kills more people in industrial electrical incidents than shock does.
• An arc flash is an explosion. A fault produces an arc that can reach temperatures several times hotter than the surface of the sun, vaporising conductors, producing a pressure wave, and throwing molten metal — all in a few thousandths of a second, far faster than any human reaction.
• ⚠⚠ The severe injuries are burns, and they are life-changing. Ordinary work clothing can ignite and continue burning; synthetic clothing melts onto skin, which is why arc-rated clothing exists and why it is specified rather than suggested.
• ⚠ NFPA 70E governs safe electrical work practice, and it establishes the analysis, boundaries, and personal protective equipment required. Learn it before you are in a position to need it.
• The available fault current and the protective device clearing time determine the incident energy — which is precisely why the fault calculations in this course are a safety subject and not only an analysis exercise. A slower breaker means a bigger arc flash.
• ⚠⚠ De-energise. Then verify. Then work. Energised work requires justification, authorisation, and a written procedure — "it was only going to take a minute" is the sentence that appears in the incident reports.
• Test the tester on a known source before and after testing the circuit, every time. A dead tester reads exactly like a dead circuit.
• Respect stored energy. Capacitors, batteries, and standby generation can re-energise a circuit you locked out, and backfeed from a distributed generation source is a recognised and growing hazard.
• Understand what the equipment labels mean and follow the boundaries they define.
• ⚠ You may refuse unsafe work, and you should. No schedule justifies an arc flash.

⚠ Florida's grid is a hurricane grid — and that shapes the engineering

• Florida's transmission and distribution systems are designed and maintained against a storm threat that most of the country does not face, and that drives real engineering decisions rather than just maintenance budgets.
• Hardening programmes are substantial and continuing — concrete and steel structures replacing wood, selective undergrounding, vegetation management, and stronger design criteria for coastal circuits.
• ⚠ Undergrounding is not a simple improvement. It removes wind exposure and adds flooding and salt exposure, costs far more, and takes substantially longer to repair when it does fail — the trade-off is genuine and it is argued about seriously.
• Restoration is an engineering discipline of its own: assessment, prioritisation, mutual aid crews from other utilities, and switching to restore in the right order. It is real, recurring, well-paid work.
• ⚠⚠ Backfeed from generators and rooftop solar can energise a line crews believe is dead. This has killed line workers. Anti-islanding protection and interconnection standards exist for exactly this reason, and it is why a customer's improperly connected portable generator is a lethal hazard to someone else.
• Summer afternoon peak demand driven by air conditioning is the design condition for much of the Florida system.
• Growing distributed solar changes power flow, sometimes reversing it on distribution feeders, which affects protection coordination and voltage regulation in ways the system was not originally designed for.
• ⚠ Substation and generation siting increasingly has to account for storm surge and flooding, and coastal siting decisions are being revisited.

⚠⚠ A split lecture-and-laboratory pair — and a Rule 22 consequence

• Daytona State publishes this subject as two separate courses — an unsuffixed lecture course and an L-suffixed laboratory — taken together as corequisites in the same term.
• Other institutions publish the same material as a single combined C-suffixed course. Both structures are common in Florida, and they cover the same ground.
• ⚠⚠ Under Rule 22 the split pair and the combined course are distinct SCNS numbers. The C suffix is part of the course number, and equivalency does not cross it — so transfer credit for a combined course does not automatically satisfy both halves of a split pair, and vice versa.
• Raise this with the receiving institution in advance if you are transferring in either direction. It is routinely resolved by a department, and routinely resolved badly if raised at the last minute.
• Take the pair together. They are corequisites for a reason: the laboratory demonstrates what the lecture derives, and separating them removes most of the value of both.

⚠⚠ Engineering laboratories store energy — that is the hazard in one phrase

• Loaded specimens, pressurised systems, charged capacitors, energised circuits, springs, and rotating masses all hold energy that can be released suddenly, and almost every serious laboratory injury is a stored-energy release.
• ⚠ A test specimen under load is dangerous at the moment it fails. Fracture releases stored elastic energy and can throw fragments — stay behind the guard, use eye protection, and never lean over a loaded machine.
• Assume rotating machinery will catch anything loose. Long hair tied back, no loose clothing, no gloves near rotating equipment, no jewellery.
• Eye protection every time in the laboratory, not only while you personally are testing. Other people's work is the usual source.
• ⚠ Verify de-energisation before touching anything electrical, and lock out where lockout applies. A capacitor can hold a lethal charge after power is removed.
• Know where the emergency stop, the main disconnect, and the first aid kit are in every laboratory you work in, before you need them.
• Do not operate equipment you have not been trained on, and do not work alone in a laboratory.
• Follow the procedure exactly, and stop when something is unexpected. Improvising a test setup is how equipment is destroyed and people are hurt.
• Report every incident and near miss. A near miss is free information about a hazard that has not hurt anyone yet.

⚠⚠ An engineering answer is a number, a unit, and a judgement about whether it is plausible

• A number without units is not an answer, and unit errors are the single most common source of catastrophic engineering mistakes — including ones that have destroyed spacecraft.
• Carry units through the calculation rather than adding them at the end. If the units do not come out right, the working is wrong, and this catches errors nothing else will.
• ⚠ Sanity-check every result. Ask whether the magnitude is plausible before writing it down — a beam deflecting three metres or a pump drawing a megawatt is telling you something, and the software will not.
• Estimate first, then calculate. An order-of-magnitude estimate made before the analysis is the cheapest error check available.
• Know your assumptions and state them. Every analysis rests on idealisations — rigid bodies, incompressible flow, linear elasticity — and the failures happen where an assumption stopped being true and nobody noticed.
• Significant figures are a claim about precision. Reporting eight digits from a measurement good to two is a misrepresentation, not thoroughness.
• ⚠ Software output is not verification. Analysis packages return confident, well-formatted answers to badly posed problems — you are responsible for the model, the inputs, and whether the result makes sense.
• Show the working. An answer nobody can check is not usable engineering, and in professional practice it is not acceptable.
• Say when you are unsure. Flagging a doubt is what a competent engineer does; concealing it is how failures propagate.

⚠ Engineering technology and professional engineering licensure in Florida

• Engineering practice is regulated in Florida under Chapter 471, Florida Statutes, through the Board of Professional Engineers and FBPE. Offering engineering services to the public and sealing engineering documents require a professional engineer licence.
• ⚠⚠ Engineering technology and engineering are different educational pathways, and the distinction matters for licensure. Licensure routes are built around programmes accredited by ABET, and ABET accredits engineering and engineering technology under separate commissions with different criteria.
• ⚠ A degree in engineering technology may not qualify a graduate for PE licensure on the same terms as an engineering degree, and in some states not at all. Requirements differ by state and they change.
• If professional licensure is your goal, establish the route before you enrol — ask FBPE directly, ask the programme what its graduates have actually done, and get the answer in writing. This is the same unrecoverable trap this repository records for allied health accreditation, and it is discovered just as late.
• The industry exemption matters in practice. A great deal of engineering work performed inside a manufacturing company does not require a licence, which is why many engineering technology graduates have full technical careers without one.
• Certification is a separate and useful route — NICET, ASQ, and manufacturer certifications are recognised by employers and do not depend on the degree's accreditation category.
• ⚠ Rule 11 applies. Licensure requirements, accreditation criteria, and reciprocity between states all change — verify with FBPE and NCEES rather than relying on this guide.

How Florida course levels affect transfer

The first digit of an SCNS number denotes the year of offering, not transferability. Courses at the 1000 and 2000 levels transfer transparently between Florida public institutions, and 3000 to 4000 is unproblematic since both are upper division. The boundary that actually matters is 2000 to 3000, where lower-division credit generally cannot satisfy an upper-division requirement — and it is live in these prefixes, since Daytona State offers both associate-level and bachelor of science in engineering technology coursework in them.

ETP4240L is 1 credit, offered fall at Daytona State, with a $21.00 laboratory fee and ETP4240 as corequisite. ⚠ The contact-hour figure is derived — see the note above.