EBOOK – Home generator selection – Tài Liệu Mới

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EBOOK – Lựa chọn máy phát điện gia đình – Lắp đặt và sửa chữa (Paul Dempsey) – 241 Trang.

There are various reasons why the North American grid, once the envy of the world, can no longer keep pace with demand. Some critics blame poor maintenance, others see privatization 80 percent of the grid is privately owned as the culprit, and still others point to the high level of integration that can escalate local failures into regional catastrophes.

An example of the latter occurred in August 2003. A high-voltage transmission line sagged, touched a wet tree branch, and shorted to ground. This produced a cascade
of exploded transformers and burned-out wiring that shut off power to 50 million people in eight states and parts of southern Canada. The outage cost several billion dollars and the lives of 11 people.

CONTENTS:

1. Selecting the right
generator 1
Outages 3
What’s available 6
Power output 12
Power quality 13
Voltage 13
Frequency 13
Distortion 13
Engines or prime movers 13
Fuel options 14
Other features worth having 15
Instrumentation 16
Circuit breakers 16
Ground-fault circuit
interrupters 16
Automatic idle control 16
Noise 16
Sizing 17
2 • Powering up 21
Location 21
Hookup 22
Power cords 23
Power inlet box 24
Transfer switches 25
Transfer switches and neutral
grounds 27
Electrical safety 28
Grounding rods 29
Fuels 31
Gasoline 31
Propane 32
Natural gas 34
Diesel 34
Planning ahead 34
3 • Generator repairs 37
Conventional generators 38
Brushed generators 39
Brushless generators 40
Power quality 40
Tools 44
Measurements 46
Output tests 46
Resistance tests 51
Ohmmeter tests 54
Megaohmmeter tests 55
Rotor excitation test 68
Inverter generators 69
Operation 70
Troubleshooting 73
…