Workshop Testing Panel - Assignment Example

Workshop Testing Panel Nature of task: Understanding the utility of each part of the testing panel Subject Control panel is a box or cabinet which contains electrical components to control the motors and equipments. It’s used to measure and test electrical devices, measurement of their operating voltage and current consumption, as well as testing for conductor continuity. The test panel in the Electrical workshop is very useful tool that can be used for testing. The following diagram is the test panel; each part of the test panel is numbered from 1 to 30. The function of each part is elaborated in the following table below: Test panel parts Part No Title Function 1 Circuit breaker for AC440V Circuit breaker protects the wiring and fixtures by turning off the power. If a fixture shorts out, or if a circuit gets overloaded, the breaker will "trip."  Switch on or off the power from AC440 V 2 Circuit breaker for AC230V Circuit breakers protect the wiring and fixtures by turning off the power. If a fixture shorts out, or if a circuit gets overloaded, the breaker will "trip."  Switch on or off the power from AC230 V 3 Circuit breaker for AC110V Circuit breakers protect the wiring and fixtures by turning off the power. If a fixture shorts out, or if a circuit gets overloaded, the breaker will "trip."  4 Circuit breaker for AC24V Circuit breakers protect the wiring and fixtures by turning off the power. If a fixture shorts out, or if a circuit gets overloaded, the breaker will "trip."  Switch on or off the power from AC24 V 5 Circuit breaker for DC24V Circuit breakers protect the wiring and fixtures by turning off the power. If a fixture shorts out, or if a circuit gets overloaded, the breaker will "trip."  Switch on or off the power from DC24 V 6 Voltmeter Measures the potential difference between two points in a circuit. 7 Changeover switch For changing various desired voltages. 8 Receptacle This is device into which an electric cord can be plugged in order to provide electricity.  Used to test 230V equipments with the same socket 9 Socket For communication between two machines Used to test lamps that is Edison (E)27 type 10 Socket For communication between two machines. Used to test lamps that is Edison (E) 27 type 11 Receptacle This is device into which an electric cord can be plugged in order to provide electricity. Used to test 230V equipments with the same socket 12 Socket For communication between two machines . Used to test lamps that is Edison (E) 40 type 13 Socket For communication between two machines . Used to test lamps type Edison (E) 40 14 Receptacle This is device into which an electric cord can be plugged in order to provide electricity. Used to test 110V equipments with the same socket 15 Receptacle This is device into which an electric cord can be plugged in order to provide electricity. Used to test 110V equipments with the same socket 16 Socket Electrical devices used to connect to a power source onto which another device can be plugged or screwed in. Used to test lamps that is B-22 type 17 Socket Electrical devices used to connect to a power source onto which another device can be plugged or screwed in. Used to test lamps that is B-22 type 18 Socket Electrical devices used to connect to a power source onto which another device can be plugged or screwed in. Used to test lamps that is B-15d type 19 Socket Electrical devices used to connect to a power source onto which another device can be plugged or screwed in. Used to test lamps that is B-15d type 20 Socket Electrical devices used to connect to a power source onto which another device can be plugged or screwed in. Used to test lamps that is BA9S type 21 Socket Electrical devices used to connect to a power source onto which another device can be plugged or screwed in0 Used to test lamps that is BA9S type 22 Socket Electrical devices used to connect to a power source onto which another device can be plugged or screwed in. Used to test lamps that is Edison (E) 12 type 23 Socket Electrical devices used to connect to a power source onto which another device can be plugged or screwed in, used to test lamps that is Edison (E) 12 type 24 Test Terminal AC440 V This provides AC power of 440 volts for connection of testing other equipments 25 Test Terminal AC230 V This provides AC power of 230 volts for connection of testing other equipments of similar voltage. 26 Test Terminal AC110 V This provides AC power of 110 volts for connection of testing other equipments of similar voltage. 27 Test Terminal AC24 V This provides AC power of 24 volts for connection of testing other equipments of similar voltage. 28 Test Terminal DC24 V To meet rigorous operating tests requirements in a variety of environmental conditions. This provides DC power of 24 volts for connection of testing other equipments of similar voltage. 29 Test Jack To meet rigorous operating test requirements in a variety of environmental conditions Used for checking the continuity of M size fuses. 30 Fuse check This is use to check the working condition of fuses and its indication is LED light. Test Equipments Electrical workshop test panel is comprised of numerous, multifunction and site specific test equipments. Each test equipment has its own use in variety of situations and occasions. Below is the list of test equipments in the electrical workshop: List of measuring instruments used in electrical and electronic work Instrument Purpose of Instrument Ammeter Measures current Capacitance meter Measures the capacitance of a component Distortionmeter Measures the distortion added to a circuit Electricity meter Measures the amount of energy dissipated Frequency counter Measures the frequency of the current LCR meter Measures the inductance, capacitance and resistance of a component Microwave power meter Measures power at microwave frequencies Multimeter General purpose instrument measures voltage, current and resistance (and sometimes other quantities as well) Network analyzer Measures network parameters Ohmmeter Measures the resistance of a component Oscilloscope Displays waveform of a signal Psophometer Measures AF signal level and noise Q meter Measures Q factor of the RF circuits Signal analyzer Measures both the amplitude and the modulation of a RF signal Signal generator Generates signals for testing purposes Spectrum analyser Displays frequency spectrum Sweep generator Creates constant-amplitude variable frequency sine waves to test frequency response Transistor tester Tests transistors Tube tester Tests vacuum tubes (triode, tetrode etc.) Wattmeter Measures the power Vectorscope Displays the phase of the colors in color TV Video signal generator Generates video signal for testing purposes Voltmeter Measures the potential difference between two points in a circuit. VU meter Measures the level of AF signals in Volume units Occasions Each test equipment has different function and use, below is the list of occasions when a test equipment was used. Test Equipment Occasion/ Situation of use Multi-meter Multimeter was used under following conditons : measuring voltage, current and resistance Measuring AC voltage in 230 V socket in the electrical workshop Measuring DC voltage across torch batteries Checking the continuity in ohms across a fuse Measuring the current in series for the thermal overload of the domestic FW pump DC mA Source It was used to calculate the amount of mA which some devices operated at, in the Inert Gas Generator Panel . It was used to measure the current in mA in solar panel. Multifunction Calibrator It was used to generate 4-20mA signal for testing the pressure transmitter, when the signal was going up automatically the readings were changing on the pressure gauge in the CCR Regulated Power Supply It was used to charge up lifeboat batteries, the device was set at 13.8 V Clamp Meter It was used to check the current of each phases of the Domestic FW pump in the Electrical workshop Resistance Box It was used as a load of 270KΩ when the pressure transmitter was tested Addressee Programmer It was used to set the address for a fire smoke detector Insulation Tester It was used to check how good the insulation between the terminals and earth on the cargo pumps Digital thermometer It was used to read the temperature in DE and NDE of domestic FW pump Portable Wheatstone Bridge It can be used to change AC to DC Fluorescence Inspection Lamp It can be used to show any colorless steam leak in a pipe Some test equipments are shown on the following picture Read More