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POWER MASTER
Hobart POWER MASTER User Manual
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OM-2065
110190
032993
Operation
and
Maintenance
Manual
with
Illustrated
Parts
List
for
P
O
W
ER
M
ASTER
Solid
State
Frequency
Converter
Specification
Number
7015-3
Rated
Output:
90-kVA,
115/200-V,
3-PHASE,
400-Hz
415-V,
3-Phase,
50-Hz
Inp
ut
Model
Number
90SB51
Hobart
Brothers
Company
Airport
Systems
Group
Ground
Power
Equ
ipment
Troy,
Ohio
45373
U.S.A.
2
Table of Contents
Default Chapter
7
Table of Contents
7
Chapter 1. Description/Operation
13
Section 1. Description
13
General
13
Mountings for the Solid State Converter
13
Advantages Offered by Solid State Converter
13
Frequency Converter Unit
14
Theory of Operation
15
Input Rectifier
15
Specifications and Capabilities
15
Inverter
16
Transformers
16
Output Filter
16
Protective Circuits
16
Block Diagram of Converter
16
Alarms
17
Orientation
17
Detailed Description
17
Controls and Control Circuits
17
H" Inverter Bridge
17
Description of Front Panel Controls
19
Converter Cabinet
21
Bridge Interlock Circuit
21
Remote Pushbutton Station Connection (Optional)
22
Section 2. Preparation for Use
23
Receipt and Inspection of Equipment
23
Unpacking the Unit
23
Component Torque Values
30
Mounting the Unit
23
Preparation for Use
23
Select an Adequate Source of Input Power
24
Install Input Conductors in Converter
24
Install Cable for Remote Control START/STOP
24
Install Input Cable at Electrical Power Supply Service
24
Other Locations for Cable Entrance
24
Check Converter No-Load Operation
24
Install Output Cable
25
Control Panel
27
Chapter 2. Servicing
29
Alarm Boards
31
Chapter 3. Troubleshooting
31
Chapter 4. Illustrated Parts List
43
AC/AC Converter
47
Main Frame & Cover Assembly
48
AC/AC Converter (Front Components and Main Transformers)
50
AC/AC Converter (Rear Components)
52
Front Door Assembly
57
Card Cage Assembly
59
Card Cage
32
Control Panel
33
Base Pulse for Transistor SW1
37
Base Pulse for Transistor SW2
37
Filtered Output Waveform
38
Unfiltered Output Waveform
38
Transistor Module
39
Resistance Values for Transistor Module
40
Taking Transistor Module Resistance Measurements
40
4
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Hobart POWER MASTER Specifications
General
Brand
Hobart
Model
POWER MASTER
Category
Media Converter
Language
English
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