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Portable Generator
UCI 274 Series
Stamford UCI 274 Series User Manual
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Installation, Service & Maintenance
Manual
AC generators with the following for pr
efixes:
UCI; UCM; UCD 224 & 274 .
All manuals and user guides at all-guides.com
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2
Table of Contents
Table of Contents
4
Introduction
6
Designation
6
Serial Number Location
6
Principle of Operation
7
Self-Excited Avr Controlled Generators
7
Permanent Magnet Generator (Pmg) Excited
7
Avr Accessories
7
Transformer Controlled Generators
7
Application of the Generator
8
Installation - Part 1
10
Lifting
10
Assembly
10
Foot Option
10
Two Bearing Generators
11
Single Bearing Generators
11
Earthing
11
Pre-Running Checks
11
Insulation Check
11
Direction of Rotation
12
Voltage and Frequency
12
Avr Settings
12
Type Sx460 Avr
12
Type Mx341 Avr
13
Type Mx321 Avr
13
Transformer Controlled
14
Generator Set Testing
14
Test Metering/Cabling
14
Initial Start-Up
14
Load Testing
15
Avr Controlled Generators - Avr Adjustments
15
UFRO (under Frequency Roll Off)
15
EXC TRIP (Excitation Trip)
16
OVER/V (over Voltage)
16
Transient Load Switching Adjustments
16
Transformer Controlled Generators
17
Accessories
17
Remote Voltage Adjust (All Avr Types)
19
Parallel Operation
19
Droop
19
Setting Procedure
20
Astatic Control
20
Manual Voltage Regulator (Mvr)
20
MX341 and MX321 AVR
20
Overvoltage De-Excitation Breaker
20
Resetting the Breaker
21
Current Limit - Mx321 Avr
21
Setting Procedure
21
Power Factor Controller (Pfc3)
22
Service and Maintenance
23
Winding Condition
23
Winding Condition Assessment
23
Methods of Drying out Generators
23
Bearings
26
Air Filters
26
Cleaning Procedure
26
Fault Finding
26
Sx460 Avr - Fault Finding
26
Sx440 Avr - Fault Finding
27
Sx421 Avr - Fault Finding
27
Transformer Control - Fault Finding
27
Mx341 Avr - Fault Finding
28
Mx321 Avr - Fault Finding
28
Residual Voltage Check
29
Separate Excitation Test Procedure
29
GENERATOR WINDINGS, ROTATING DIODES and PERMANENT MAGNET GENERATOR (PMG)
29
Balanced Main Terminal Voltages
29
Unbalanced Main Terminal Voltages
30
Excitation Control Test
30
Avr Function Test
30
Ransformer Control
31
Removal and Replacement of Component Assemblies
31
Removal of Permanent Magnet Generator (Pmg)
31
Removal of Bearings
31
Removal of Endbracket and Exciter Stator
32
Removal of the Rotor Assembly
32
Returning to Service
33
Spares and after Sales Service
34
Recommended Spares
34
After Sales Service
34
TYPICAL SINGLE BEARING GENERATOR (Fig. 11)
35
TYPICAL TWO BEARING GENERATOR (Fig. 12)
37
TYPICAL TWO BEARING (SERIES 5) GENERATOR (Fig. 13)
38
ROTATING RECTIFIER ASSEMBLY (Fig. 14)
41
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Stamford UCI 274 Series Specifications
General
Brand
Stamford
Model
UCI 274 Series
Category
Portable Generator
Language
English
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General
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