Minimum required didactic content: Basic circuits of a three-pole, double busbar system Three-phase, double busbar system with load Busbar changeover without interruption of the branch Preparation of algorithms for various switching operations Busbar coupling Investigations on Three-phase Transmission Lines Voltage increases on open-circuit lines Voltage drop as a function of line length Complied 23246810.5 Voltage drop as a function of cos-phi Capacitive and inductive power losses on a line as a function of U and I Phase shift on a line Overcurrent time protection for lines Designing and parameterising overcurrent time protection Determining the reset ratio in the case of single-, double- and triple-pole short circuit Determining a relay‘s shortest release time Checking a circuit breaker‘s release behaviour in the event of a failure Three-phase consumers with star and delta connections (R, L, C, RL, RC and RLC loads) Measurement with active and reactive energy meters: - for symmetric and asymmetric RL loads - in the event of a phase failure - in the event of over-compensation (RC load) - for active loads - in the event of energy-flow reversal Determination of the first and second power maxima Determination of the power maximum in the event of an asymmetric load Recording of load profiles Dynamic loads Dynamic, three-phase load (asynchronous motor) Power measurement in the case of energy-flow reversal Manual and automatic compensation of reactive power Operating an asynchronous machine and recording its characteristic parameters Calculating parameters for compensation capacitors Compensation using various capacitors Determining stage power Manual compensation of reactive power Automatic identification of a reactive power controller‘s connections Automatic compensation of reactive power “Dark” synchronising circuit, “Light” synchronising circuit, “Cyclic“ synchronising circuit Active power generation, Inductive reactive power generation, Capacitive reactive power generation Transformer equivalent circuit diagram Multiphase transformer operating at no-load and short-circuit Multiphase transformer with ohmic, inductive and capacitive load Parallel operation of multiphase transformers Current distribution for different vector groups Determining zero impedance / Investigating the transformation ratio Includes at least the following DIN A4 modules with the following characteristics: All modules are supplied as a DIN A4 high didactic panel with 4mm secure connection plugs and color printing of wiring diagrams, photos etc. 4x Double busbar, three-phase, supply/output field 5A power switch for remote control Three-phase voltage measurement integrated in the 3 inputs / outputs Monitoring of overcurrents / overvoltages / phase difference / voltage difference Dual Ethernet interface for integration into Scada Smart Grid system 1x Double busbar unit, three-phase, coupler panel 2x Isolators, with remote switching mechanism and auxiliary contact, 1x Circuit breaker 5A, with remote switching mechanism and auxiliary contact Indicators: status lamps for the isolators and the circuit breaker controlled by pushbuttons, control inputs or Ethernet interface 2 Ethernet ports, Acoustic alarm for warning and alarm signals Three-phase current measurement up to 5A, 3 x three-phase voltage measurement up to 500 V Integrated monitors: Over-current, over-voltage, phase angle, voltage differential Control voltage: 24V 1x Transmission line model 150km/300km 1x Time Overcurrent Relay with RS485 interface Thermal load capacity of current circuit: Surge current (half-wave) 250x IN, for 1s 100x IN, for 10s 30x IN, continuous 4x IN Trip parameters: I > 0.5-2x IN, I > 1-15x IN, tI > 0-100s, tI > 0-2.5s 1x Ohmic load 3x 560 Ohm 2x Power switching module with 24V control Rated operating current: 16A Function: remote control for the fuse relay Signals: indicator for "On" and "Off". Contacts: 3 working contacts, 2 auxiliary contacts 2x Three-phase measuring instrument system with Ethernet interface Determination of apparent, active and reactive power / active, reactive and apparent work Determination of frequency and distortion factors for current and voltage Input of mains harmonics and neutral conductor current Pulse measurement / Peak and average value recording Large backlit, high-contrast graphic display Representation in tables, diagrams and vector diagrams 2 digital inputs and 2 digital outputs for free occupation with functions Ethernet interface for integration in Scada Smart Grid system 1x Lamp board 230V, Light bulb: 25W, Energy saving lamp: 4W, LEDbulb 4W 1x Inductive load, three-phase, 1kW 1x Capacitive load, three-phase, 1kW 1x Variable Ohmic load, three-phase, 1kW for parallel, series, star and delta circuits Resistance: 3 x 750 Ohm, Current: 3 x 2 A 1x Star-Delta switch 1x Reactive power controller Operating voltage: 200-400V Frequency: 50/60Hz (48 to 62Hz) Control contacts: 6 floating relay contacts Load rating of control contacts: Switch voltage compliant with VDE 0110 group B, 400V/AC; compliant with VDE 0110 group C, 250V/AC Switching current: 5A, maximum Rating: 1800VA, maximum Alarm contact: Load rating as for control contacts 1x Switchable Capacitor Battery, 4 states Compensating reactive power: max. approx.. 1500 var State 1: 3 x 2 µF, 450 V, 50 Hz, State 2: 3 x 4 µF, 450 V, 50 Hz State 3: 3 x 8 µF, 400 V, 50 Hz, State 4: 3 x 16 µF, 400 V, 50 Hz 1x Servo motor brake system for performing experiments on machines Speed or torque control without and with PC / special network synchronization mode 5.7" color touch screen / simultaneous display of mechanical (speed, torque, power) and electrical values (voltage, current, apparent/active/reactive power, cos phi, power factor) Galvanically isolated USB interface / software for measuring mechanical and electrical characteristics Simulation of industrial loads for testing electrical machines (calender, pump, inertia mass, compressor, time-variable load, etc.) with max. torque 30 Nm / speed 4000min-1 Analysis of the motor curve / operating point / characteristics over time with recording of the measured values including load-dependent starting current. Integrated interface for reading electronic nameplates of ESD motor samples Coupling sleeve and guard / Integrated LED protective cover / Motor temperature monitoring 1x Power supply with three-phase motor circuit breaker, AC; fixed DC 210V 6A; variable DC 0-240V 6A 1x Motor protection switch, 3 pole, 1.8-2.5A 2x Power switching module with 24V control Rated operating current: 16A Function: remote control for the fuse relay Signals: indicator for "On" and "Off". Contacts: 3 working contacts, 2 auxiliary contacts 1x Three-phase measuring instrument system with Ethernet interface Determination of apparent, active and reactive power / active, reactive and apparent work Determination of frequency and distortion factors for current and voltage Input of mains harmonics and neutral conductor current Pulse measurement / Peak and average value recording Large backlit, high-contrast graphic display Representation in tables, diagrams and vector diagrams 2 digital inputs and 2 digital outputs for free occupation with functions Ethernet interface for integration in Scada Smart Grid system 1x Didactic RMS voltage/current/power measuring instrument system TRMS Multimeter / Power meter / Power factor meter Separate input for voltage and current / Electrically indestructible up to 20 A/600 V 5.7" color touch screen for the display of 1 to 4 simultaneous digital and analog values Galvanically isolated USB interface with many virtual instruments such as oscilloscope, power meter, voltage/current/power plotter (software included) 1x Synchronization Unit synchronizer display (comprising 3 lamps) is used to display voltage and phase angles between generator and power supply circuit (light-dark indication) zero voltmeter, double frequency meter, double voltmeter digital synchronoscope, synchronization switch 1x Exciter voltage controller with de-excitation DC 200 V / 2 A Output DC can be controlled up to 200V / 2A; Remote control possible, graphic screen 1x Multi-funkction transformer, Three-phase, 1kW • Operation as a single-phase transformer • Determination of open-circuit (no-load) voltages, transformation ratios and losses • Operation as an auto-transformer • Step-up or step-down transformation • Operation as a three-phase transformer in different circuits • Input voltage: 3x 230/400 V, 50/60 Hz Supply via mains power cable • Output voltage: 6x 115 V • Power: 1000 VA 1x Power switching module with 24V control Rated operating current: 16A Function: remote control for the fuse relay Signals: indicator for "On" and "Off". Contacts: 3 working contacts, 2 auxiliary contacts Includes at least the following electrical machines with the following minimum characteristics: Industrial type machines mounted on chassis with anti-vibration system Coupling with single sleeve without tools on standard table between machine and brake Winding diagram printed on a uniform size panel on the front side of approx. 170 x 140mm Machine terminal board with 4mm safety plugs, always on the front panel on the learner's side. Temperature sensor against thermal overload integrated in each machine ESD electronic chips for automatic transmission of machine data to the brake test bench 1x Three-phase asynchronous motor, squirrel-cage,690V/400V, 2900 rpm, 1kW 1x Three-phase synchronous machine with smooth core rotor, 0,8kW Nominal current : 1,5A / 2,6A ; Nominal speed : 1500min-1, Exciter current: 1,6A Includes at least the following software with the following minimum features: 1x Complete software Scada Smart Grid with graphic editor Visualization of measured values and operating states of the relays Remote control of bar bus nodes, power switch etc. Possibility of programming own Scada models (graphic editor) Visualization of all connected data in a time diagram PLC - Integrated PLC for programming intelligent network management rules in structured text with access to variable values and automated control. Programming of integrated relays All accessories necessary for proper operation must be provided, with at least the following: 1x Adjustable 3-phase power supply, 0-450V/2A Power connection: 230/400V, 50/60Hz Output voltage: 3x 0...450V, 50/60Hz variable by means of 3-phase regulating transformer (tolerance 0.5%) DC output 0...250V Output current: 2.0A 4-mm safety sockets (L1, L2, L3, N, PE, L-, L+) 1 Voltmeter, 0...450V (moving iron instrument) 1 Ammeter, 0...3A (moving iron instrument) 3 Phase control lights 1 Measuring point selector switch. L1-N, L2-N, L3-N, L1-L2, L1-L3, L2- L3 1 Measuring point selector switch. I1, I2, I3 Protection: 3 thermo-magnetic device circuit breakers, Motor protection switch adjustable from 1.6...2.5A with undervoltage trip 1x 4mm safety measuring cable set and 19/4mm safety plug set 2x RJ45 network accessories with 5-port switch, Ethernet cable and USB/Ethernet converter 1x Interactive multimedia courses Interactive experiment setups with animation Measured values and diagrams can be stored in the experiment instructions per drag and drop Direct link to instruments/measurement and test software from the experiment instructions Includes questions with feedback and evaluation logic for progress monitoring Documents can be printed out for hardcopy of experiment instructions including solutions 2x Mobile aluminium experiment stand, 3 levels, 6 x earthed sockets 30-mm table top made of highly compressed, multi-layer chipboard, Resistant to heat and many chemicals Frame with solid impact-resistant protective edging made of 3mm thick RAL 7047 coloured plastic Coating and adhesive are PVC free Power strip with 6 outlet sockets mounted underneath the table top, lead and earthed plug 2 extruded aluminium profiles with multiple grooves 1800 x 120 x 40 mm (WxHxD) 8 equally sized grooves in extruded aluminium profiles (3 on each side and 1 each on the front and back) Table frame made of tough combination of rectangular tubing around the full perimeter PC and Monitor holder 1x Power supply for tables (2x CEE 16A, 230V, circuit breaker) 2x Standard branded PC with 24'' screen, adapted keyboard, Windows 10 or 11, UPS, spare battery Technical Clauses:

• The bidder must present a manufacturers authorization
• Training manual for the items in form of an interactive software course
• Software packages needed for conducting experiment using these items
• The supplier must provide 2 days of training to max. 15 trainers