Pi-manufacturing AC generators User Manual

Installation, Service & Maintenance Manual AC generators with the following for prefixes: UCI; UCM; UCD 224 & 274 .

SECTION 4 INSTALLATION - PART 1 4.1 LIFTING Incorrect lifting or inadequate lifting capacity can result in severe personal injury or equipment damage

4.2.2 TWO BEARING GENERATORS A flexible coupling should be fitted and aligned in accordance with the coupling manufacturer's instruction. If a c

4.4.2 DIRECTION OF ROTATION The generator is supplied to give a phase sequence of U V W with the generator running clockwise looking at the drive end

4.4.4.4 TYPE MX341 AVR The following 'jumper' connections on the AVR should be checked to ensure they are correctly set for the generating

4.4.5 TRANSFORMER CONTROLLED EXCITATION SYSTEM (Series 5) This control system is identified with the digit 5 as the last digit of the frame size quot

4.7 LOAD TESTING During testing it may be necessary to remove covers to adjust controls

4.7.1.2 EXC TRIP (Excitation Trip) AVR Types MX341 and MX321 An AVR supplied from a permanent magnet generator inherently delivers maximum excitation

4.7.1.5 RAMP AVR Type MX321 The RAMP potentiometer enables adjustment of the time taken for the generator's initial build up to normal rated vol

SECTION 5 INSTALLATION - PART 2 5.1 GENERAL The extent of site installation will depend upon the generating set build, e.g. if the generator is ins

SECTION 6 ACCESSORIES Generator control accessories may be fitted, as an option, in the generator terminal box. If fitted at the time of supply, the w

SAFETY PRECAUTIONS Before operating the generating set, read the generating set operation manual and this generator manual and become familiar with it

Generally 5% droop at full load current zero p.f. is sufficient to ensure kVAr sharing. If the droop accessory has been supplied with the generator

6.4.1 RESETTING THE BREAKER In the event of operation of the circuit breaker, indicated by loss of generator output voltage, manual resetting is requ

Stop the generating set. Remove the link between terminals K1-K2 at the auxiliary terminal block and connect a 5A switch across the terminals K1-K2.

SECTION 7 SERVICE AND MAINTENANCE As part of routine maintenance procedures, periodic attention to winding condition (particularly when generators hav

It is possible that simply running the gen set unexcited – AVR terminals K1 K2 open circuit - for a period of say 10 minutes will sufficiently dry the

Blown Air Drying Remove the covers from all apertures to allow the escape of the water-laden air. During drying, air must be able to flow freely thro

Ground V and W phase and megger U phase to ground Ground U and W phase and megger V phase to ground Ground U and V phase and megger W phase to gro

7.4.2 SX440 AVR - FAULT FINDING No voltage build-up when starting set 1. Check link K1-K2 on auxiliary terminals. 2. Check speed 3. Check residual

7.4.5 MX341 AVR - FAULT FINDING No voltage build-up when starting set 1. Check link K1-K2 on auxiliary terminals 2. Follow Separate Excitation Test

7.4.7 RESIDUAL VOLTAGE CHECK This procedure is applicable to generators with either SX460 or SX440 or SX421 AVR. With the generator set stationary

FOREWORD The function of this book is to provide the user of the Stamford generator with an understanding of the principles of operation, the criteri

Rectifier Diodes The diodes on the main rectifier assembly can be checked with a multimeter. The flexible leads connected to each diode should be dis

3. Set the AVR VOLTS control potentiometer fully clockwise. 4. Connect a 12V, 1.0A DC supply to the exciter field leads X & XX (F1 & F2) wit

The bearing(s) are a press fit and can be removed from the shaft with 3 leg or 2 leg manual or hydraulic bearing pullers. SINGLE BEARING ONLY : Befor

Damaged or worn components must be replaced. When major components have been replaced, ensure that all covers and guards are securely fitted, before

SECTION 8 SPARES AND AFTER SALES SERVICE 8.1 RECOMMENDED SPARES Service parts are conveniently packaged for easy identification. Genuine parts may be

PARTS LIST TYPICAL SINGLE BEARING GENERATOR Plate Ref. Description 1 Stator 2 Rotor 3 Exciter Rotor 4 Exciter Stator 5 N.D.E. Bracket 6 Cover N.D.E.

Fig. 11. TYPICAL SINGLE BEARING GENERATOR

PARTS LIST TYPICAL TWO BEARING GENERATOR Plate Ref. Description 1 Stator 2 Rotor 3 Exciter Rotor 4 Exciter Stator 5 N.D.E. Bracket 6 Cover N.D.E. 7

Fig. 12. TYPICAL TWO BEARING GENERATOR

PARTS LIST TYPICAL TWO BEARING (SERIES 5) GENERATOR Plate Ref. Description 1 Stator 2 Rotor 3 Exciter Rotor 4 Exciter Stator 5 N.D.E. Bracket 6 Cove

CONTENTS SAFETY PRECAUTIONS FOREWORD 1 CONTENTS 2&3 SECTION 1 INTRODUCTION 4 1.1 INTRODUCTION 4 1.2 DESIGNATION 4 1

Fig. 13. TYPICAL TWO BEARING (SERIES 5) GENERATOR

Fig. 14. ROTATING RECTIFIER ASSEMBLY

A.C. GENERATOR WARRANTY WARRANTY PERIOD A.C. Generators In respect of a.c. generators the Warranty Period is eighteen months from the date when th

REGISTERED OFFICE AND ADDRESS: BARNACK ROAD STAMFORD LINCOLNSHIRE PE9 2NB ENGLAND Telephone: 44 (0) 1780 484000 Fax: 44 (0) 1780 484100 S

CONTENTS SECTION 6 ACCESSORIES 17 6.1 REMOTE VOLTAGE ADJUST (ALL AVR TYPES) 17 6.2 PARALLEL OPERATION 17 6.2.1 DROOP 17 6.2.

SECTION 1 INTRODUCTION 1.1 INTRODUCTION The UC22/27 range of generators is of brushless rotating field design, available up to 660V/50Hz (1500 rpm) o

SECTION 2 PRINCIPLE OF OPERATION 2.1 SELF-EXCITED AVR CONTROLLED The main stator provides power for excitation of the exciter field via the SX460 (

SECTION 3 APPLICATION OF THE GENERATOR The generator is supplied as a component part for installation in a generating set. It is not, therefore, prac

In standby applications where the running time is limited and reduced life expectancy is accepted, higher levels than specified in BS5000 can be toler