Electrical
84 videos • 4,140 views • by 360° Engineer
1
INSULATION MATS FOR ELECTRICAL SUBSTATIONS || IS 15652 || IEC 61111 || SPECIFICATIONS OF MAT
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2
KNOW YOUR TRANSFORMER INTERNAL WINDING CONNECTION FROM VECTOR GROUP || Yd11 || Yd1 || Yd7 || Yd5
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3
Uninterruptible Power Supply (UPS) || Stand by UPS or Offline UPS || Online UPS ||Parallel Redundant
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4
Operation & Maintenance of UPS (Part-1) || Gutor UPS || Power & Control Circuit || Inverter || Contl
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5
Operation & Maintenance of UPS (Part-2) || Gutor UPS || Power & Control Circuit || Inverter || Contl
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6
System Grounding || Necessity or Requirement || Ungrounded || Solid || Resistance || Applications
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7
Battery Chargers (Part-1) || Basic Features || Operation || Float Mode ||Boost Mode ||Power&Control
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8
Battery Chargers (Part-2) || Operation || Float Cum Boost Charger(FCBC) ||Dual FCBC||Troubleshooting
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9
Digital Automatic Voltage Regulator (DAVR) - Part-1 || Static Excitation || Brushless Excitation
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10
Digital Automatic Voltage Regulator (DAVR) - Part-2 || BHEL Make DAVR || Hardware || Control Cards
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11
Digital Automatic Voltage Regulator (DAVR) - Part-3 || How to read BHEL DAVR Schematic Drawing ||
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12
Digital Automatic Voltage Regulator (DAVR) - Part-4 || MaxDNA Architecture|| Events (SOE) || Trends
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13
What happens if Current Transformer (CT) Secondary Circuit Opens ? || Practical View of CT
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14
Saturation of Current Transformer (CT) || Practical view of CT Saturation ||Electrical Circuit of CT
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15
Digital Automatic Voltage Regulator (DAVR) - Part-5 || Maintenance & Troubleshooting of BHEL DAVR
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16
Selection Parameters of Current Transformer (CT) || Instrument Security Factor (ISF) || PS class CT
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17
Testing of Current Transformer (CT) || Ratio, Polarity, Excitation, IR, WR, Burden, HV & PD Tests
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18
Control Scheme of LT Motor || Direct On Line (DOL) Starter || Control Interlocks || Reacceleration
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19
Contactor || Operation & Parts of Contactor || Specifications || Utilization Category || AC-1/2/3/4
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20
Selection of Contactor || Types of Contactors || Effect of Control Cable Length in AC Contactors
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21
Selection of Control Transformer || VA Rating Calculation || Regulation Chart |Application Inrush VA
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22
Fuse || Selection of Fuse || Utilization Category || Types of Fuse || Coordination of fuse ||gG | aM
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23
Motor Starter || Direct On-Line (DOL) || Start- Delta || Auto Transformer || Soft Starter || Automat
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24
Type-2 Co-ordination for Direct On-Line (DOL) Motor Starter || Contactor, BMR, Fuse&Switch Selection
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25
Type-2 Co-ordination for Star-Delta Motor Starter || Selection of Contactors, BMR, Fuse & Switch
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26
Switch Disconnector Fuse (SDF) || Switch || Disconnector || Switch Disconnector || Parts of SDF
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27
Air Circuit Breaker (ACB) || Types of ACB || Parts & Accessories of ACB || Interlocks in ACB || LTPB
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28
Selection of Air Circuit Breaker (ACB) || Selection Parameters of ACB || Anti-Pumping || Category-B
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29
Moulded Case Circuit Breaker (MCCB) || Operation, Parts & Accessories of MCCB || Types of MCCB
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30
Selection of Moulded Case Circuit Breaker (MCCB) || Type-2 Co-ordination with MCCB || Co-ord Charts
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31
Motor Protection Circuit Breaker (MPCB) || Advantages of MPCB over MCCB||Type-2 Coordination of MPCB
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32
Miniature Circuit Breaker (MCB) || Operation, Parts, Accessories & Types of MCB || Selection of MCB
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33
Residual Current Circuit Breaker(RCCB) || Operating Principle || Selection Parameters || Precautions
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34
Contactor - Maintenance & Testing || Troubleshooting of various problems in Contactor || Chattering
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35
Testing of Bi-Metallic Overload Relay (BMR) || Overload Testing of BMR || Single phasing Testing
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36
Insulation Resistance (IR) || Polarization Index (PI) || Capacitive Current || Polarizing Current
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37
Maintenance & Testing of Air Circuit Breaker (ACB) || Maintenance Philosophy of ACB || ACB Testing
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38
Troubleshooting of Air Circuit Breaker (ACB) || Mechanical & Electrical problems in ACB & Solutions
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39
Basic Overview of Bus Auto changeover Scheme (Part-1) || Two Incomer & Buscoupler Auto transfer
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40
Bus Auto changeover Scheme (Part-2) || Independent or Dead Bus Charging in two Incomer & Buscoupler
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41
Bus Auto changeover Scheme (Part-3) || Continuous or Momentary Paralleling in Manual Mode
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42
Bus Auto changeover Scheme (Part-4) || Auto Transfer Supervision || Auto Transfer Blocked Logic
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43
Electromechanical Relays | Attractive & Rotational force | CAG, CDG, VAA, VAT, VAX, VAJS, VAJH/VAJHM
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44
Static Relays || Building Blocks of Static Relays || CTMM, CTUM, CTNM, SKE, ELR, Combiflex Relays
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45
Under Voltage Protection Co-ordination in Industrial Power System | Incomer, Bus, Motor U/V Coordina
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46
Flickering of Lights || Stroboscopic Effect || Flicker Percentage || Flicker Index || Stroboscope
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47
Necessity of Load shedding Scheme in Electrical System || Problems due to Under frequency
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48
Under Frequency Load Shedding & It's Co-ordination | Grouping of loads | Co-ordination with Example
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49
Under Frequency Load Shedding Scheme Implementation || Centralized Vs Decentralized or Independent
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50
Contingency Based Load Shedding Scheme through PLC or SCADA | Priority & Arming of Loads| Initiation
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51
Voltage Transformer Supervision (VTS) With Static Relays | UVT92m | VAPM31 | MVAPM | MCB | Fuse Fail
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52
Voltage Transformer Supervision (VTS) Function in Numerical Relays || VTS Logic, Blocking & Settings
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53
Purpose of Current Transformer Supervision (CTS) || CTS With Static Relays || VTX11/31
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54
Current Transformer Supervision (CTS) Function in Numerical Relays || CTS Logic, Blocking & Settings
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55
Circuit Breaker (CB) Monitoring/Supervision | CB status | CB contact travel time | Operation counter
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56
Trip Circuit Supervision (TCS) || VAX21/31 || TCS in Numerical Relays || TCS Function in ABB Relays
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57
Transformer Name Plate Details || IS 2026 (Part-1) || IEC 60076 (Part-1) || Explanation with Example
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58
Ferro resonance in Voltage Transformers (VT or CVT) || Non-Linear Inductance | Mitigation Techniques
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59
Generator Capability Curve || Armature &Field Heating Limit || SSSL || Stator End Core Heating Limit
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60
Basics of Electromagnetic Theory | Right Hand Thumb Rule | Fleming's Left/Right Hand Rule| Len's Law
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61
DC Earth Fault Detection and Fault location tracing of Battery or Charger or UPS Systems(AC Supply)
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62
Hysteresis & Eddy Current Losses in Electrical machines | B-H Curve | Core Losses | Constant Losses
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63
Principles of Induced EMF || Self & Mutual Induced EMF || Types of Magnetic Coupling || Dot Notation
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64
How to draw Transformer Vector Diagram || Reference for Vector Diagram
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65
What is Anti-Pumping in Circuit Breakers ? || How to provide Anti-Pumping provision in Breakers ?
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66
Motor Selection Parameters | Duty cycles (IEC 60034) | IP55 | Mounting | Enclosure | Cooling Methods
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67
Motor Name Plate Details || IS 325 || IEC 60034 (Part-1) || Explanation with Example
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68
Main, Local & Remote Back-up Protection || Local Breaker Backup (LBB) or CB Failure (CBF) Protection
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69
Hitachi Hi-Rel Make UPS | Metering, Alarms, Adjustments, Calibration, Control-Boost&Bypass Operation
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70
Mass-Tech Controls Make SMPS Based Charger | Metering, Events, Alarms, Control & Protection Settings
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71
Hi-Rel Make UPS | Metering, System Status, Fault & Alarm Log, Parallel Operation, Master-Slave, Lock
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72
Vertiv Make UPS | Metering, Maintenance, Setup, Control of Rectifier, Inverter, Bypass & Boost Opert
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73
What is Substation? | Why Substation required in Industries? | Compare with your home Electrical sys
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74
Substation in Industries Consists of ? | LIB,HT/MCC/PCC/PMCC/EPCC/EPMCC Panels, MLDB/ ELDB/ LDB etc.
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75
What is Power Factor (PF) || What is Active & Reactive Power ? || Significance in Electrical Systems
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76
CT Connections to Relay || Current Flow in CT Secondary & Relay Circuit During Normal & Fault cases
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77
Gutor Make UPS || Control of Rectifier, Inverter, Bypass & Boost Operation, Metering, Alarms, Faults
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78
Chloride Industrial Systems (CIS) Make UPS | Metering, Control of Rectifier, Inverter, Bypass,Faults
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79
What is CAT (Category) rating of a test instrument? | CAT I, CAT II, CAT III, CAT IV Ratings of Inst
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80
Installation of Nickel Cadmium (Ni-Cd) batteries | Filled and charged/discharged, Dry and discharged
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81
Nickel-Cadmium (Ni-Cd) Battery Basics | H,M & L type | Pocket (PP), Sintered (SP) & Fibre Plate (FP)
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82
Commissioning of Nickel Cadmium (Ni-Cd) batteries | Filled and charged/discharged,Dry and discharged
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83
Operation & Maintenance of Nickel Cadmium (Ni-Cd) batteries || Faults and Their Remedial Actions
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84
Handling of Nickel Cadmium (Ni-Cd) batteries || Do's, Don'ts & Precautions while working on Battery
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