Long name	Electrical safety and EMC
Approving CModule	EMV_BaET
Responsible	Prof. Dr. Christof Humpert Professor Fakultät IME
Organisation and materials	ILU course for the Electrical safety and EMC
Level	Bachelor
Semester in the year	summer semester
Duration	Semester
Hours in self-study	60
ECTS	5
Professors	Prof. Dr. Christof Humpert Professor Fakultät IME
Requirements	Fundamentals of electrical engineering - Specific resistance, capacitor, inductor - Basic circuits and impedances in the AC circuit - Complex AC calculation - Three-phase system - Electric and magnetic alternating field - Dielectric and magnetic material properties
Language	German
Separate final exam	Yes

Electrical safety
- Effects of electrical current on the human body
- Network configurations and possible touch voltages
- Grounding, earth electrode, gradient area, step voltage
- Protective measures, protective insulation, protective equipotential bonding, safety extra-low voltage, protective separation, protective earthing, residual current circuit protection
- Protective devices, fuses, line safety switch, residual current devices

Electromagnetic compatibility
- Definitions, basic influencing model, level definition
- Description in time and frequency domain, Fourier series, Fourier transform
- sources of interference, differential-mode and common-mode interference, narrow-band interference sources, intermittent broadband interference sources, transient sources of interference (ESD, LEMP, SEMP, NEMP)
- Coupling mechanisms, galvanic coupling, capacitive coupling, inductive coupling, radiation coupling
- Interference suppression measures, electromagnetic screens, filters, lightning protection, surge arresters

Use protective measures
- Know hazards due to electric current
- Calculate touch voltages depending on the network configuration and the type of fault
- Select suitable protective measures according to standard
- Dimension protective measures

Analyze and evaluate interference spectra
- Assign interference spectra to typical sources of interference
- Calculate the interference spectrum using the Fourier analysis
- Determine the interference spectrum with simplified methods
- Reconstruct the time domain function from the interference spectrum
- Evaluate the effect of interference suppression measures on the basis of the interference spectrum
- Evaluate the influence on interference sink

Select and dimension interference suppression measures
- Select appropriate measures depending on the coupling mechanism
- Apply measures for differential-mode and common-mode interferences
- Select measures depending on the interference spectrum
- Dimension external lightning protection measures
- Calculate surge voltages in the case of lightning strikes
- Calculate the influence of filters

Type	Attendance (h/Wk.)
Lecture	2
Exercises (whole course)	2

none

Effects and limitation of overvoltages, types of surge arresters
Properties and influence of electrostatic discharges
Frequency spectra of conducted interference voltages
Basics of the normative specifications

Understand and implement complex texts and standards
Use calculation tools for EMC analysis
Plan EMC tests, analyze and modify test setups and compare them with normative specifications
Investigate sources of interference experimentally, measure interference spectra, compare with calculation results
Analyze and compare the effect of interference suppression measures and explain differences
Manage complex tasks in a team
Summarize, evaluate and interpret results in written form

Independent familiarization and execution of simulations with LTspice
Investigation of mesh filters and their parasitic properties

Type	Attendance (h/Wk.)
Practical training	1