Dilihat 929
INTRODUCTION
The backbone of many electric power systems is the medium voltage distribution system. Typically operating at voltages ranging from 2,400 to 34,500 Volts, voltage stress, corona, surges and protection of equipment all create unique challenges in design, equipment selection, operation and engineering. This 2 day class takes you through the basics of medium voltage power systems including components, equipment, design and operation problems as well as protection of medium voltage systems.
OTLINE MATERI
1. Medium Voltage Safety
- Electrocution at Low vs Medium Voltage
- Arc Flash
- Qualified Person
- Approach Boundaries
- Utility and Industrial One lines
- Reliability Requirements
- Overhead and Underground Systems
- Regulated Systems
- Copper vs Aluminum Design
- Voltage Ratings
- Insulation Ratings
- 100%, 133%, 173% Insulation Levels
- Shielding Requirements
- Electric Fields
- Terminating MV
- Conductors
- Orientation of Overhead Lines
- Core and Coil Design
- Aluminum and Copper Windings
- Tank Constructio
- Loss Evaluation
- Efficiency
- Regulation
- Spot Network Design
- Network Protectors
- Network Protector
- Relay Operation
- Directional Protection Requirements
- Corona
- Surface Tracking
- Voltage Stress
- Sensing Partial
- Discharge
- Component Failure
- Resistance Grounding
- Solid Grounding
- Ungrounded Delta
- Charging Current
- Effect of Ground Faults on Delta Voltage
- Lightning and Switching Surges
- Classes of Surge Arresters
- MCOV Ratings – (Maximum Continuous Operating Voltage)
- TOV – (Maximum Temporary Over Voltage Capability)
- Protective Characteristics
- Surge Arrester Selection
- Energy Capability
- Effect of Grounding on Arrestor Selection
- Insulation Coordination
- Ratings
- Selection Process
- Accuracy
- Saturation
- Excitation
- Curves
- Burden Calculation
- Momentary Ratings
- Vacuum, Air, Oil, SF6 Designs,
- Symmetrical Interrupting Rating
- K-Rated Voltage Factor, Close and Latch Capability
- Application on Feeder Circuits
- Recloser Setting
- Continuous Current and Interrupting Ratings
- Medium Voltage Switches
- Load Rating
- Close and Latch
- Rating
- Short Time Rating
- Expulsion vs Current Limiting
- Fuse Characteristics
- E and R Rated Fuses
- Fuse Cutouts
- Medium Voltage Protection
- Relays
- Circuit Breakers
- R and E Rated Fuses
- Short Circuit vs Overcurrent Protection
- Protection with Fuses – 300%
- Overcurrent Protection with Relays – 600%
- Short Circuit Damage Characteristics
- Relay “Reach” for End of Line Faults
- Requirements
- Decrement Curves
- Thermal Damage Curves
- Reactive
- Capability Curves
- Differential Protection
- Protection Requirements
- Motor Management Relays
- Circuit
- Breaker Protection
- Relaying
- Class R Rated Fuses
- ANSI C57 Thru Fault Curves
- Impact of Transformer Winding
- Configuration
- Overview of Differential Protection
- Inrush and Harmonic Restraint
Form Pendaftaran
Silahkan isi FORMULIR PENDAFTARAN berikut dengan data yang benar agar Kami dapat konfirmasi ulang kembali via email, WA maupun telepon.