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SAFETY PRECAUTIONS Before operating the generating set, read the generating set operation manual and this generator manual and become familiar with it and the equipment. SAFE AND EFFICIENT OPERATION CAN ONLY BE ACHIEVED IF THE EQUIPMENT IS CORRECTLY OPERATED AND MAINTAINED. Many accidents occur...
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FOREWORD The function of this book is to provide the user of the Stamford ELECTROMAGNETIC COMPATIBILITY generator with an understanding of the principles of operation, the criteria for which the generator has been designed, and the Additional Information installation and maintenance procedures. Specific areas where the lack of care or use of incorrect procedures could lead to European Union equipment damage and/or personal injury are highlighted, with...
SECTION 1 INTRODUCTION 1.3 SERIAL NUMBER LOCATION 1.1 LV INTRODUCTION Each generator has its own unique serial number stamped The LV range of generators is of brushless rotating field into the upper section of the frames drive-end end-plate. design, available up to 690V/50Hz (1500 rpm, 4 pole) and 600V/60Hz (1800 rpm, 4 pole) and built to meet BSEN 60034, BS5000 Part 3 and other appropriate international Inside the terminal box two adhesive labels have been fixed,...
SECTION 2 PRINCIPLE OF OPERATION The permanent magnet generator provides power for It also provides over-excitation protection during fault excitation of the exciter field via the AVR which is the conditions, and over-voltage protection, with provision for controlling device governing the level of excitation provided operating an external circuit breaker, and additional to the exciter field.
SECTION 3 APPLICATION OF THE GENERATOR the generator's storage or installed area, thermostatic control The generator is supplied as a component part for of space heaters will be of considerable assistance. installation in a generating set. It is not, therefore, practicable to fit all the necessary warning/hazard labels during generator manufacture.
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The main vibration frequencies produced by the generator The terminal box is constructed with a removable panel for are as follows:- easy adaptation to suit specific glanding requirements. Within the terminal box there are insulated terminals for line 4 pole 1500 rpm 25 Hz and neutral connections and provision for earthing.
SECTION 4 INSTALLATION - PART 1 4.1 LIFTING Open coupled sets require a suitable guard, to be provided by the set builder. Incorrect lifting of inadequate lifting capacity can result in severe personal Caution ! injury of equipment damage. Lifting Incorrect guarding and/or generator capacity required for complete generator alignment can result in personal...
Offer the AC generator to engine and engage both The insulation resistance should not be less than 50MΩ and coupling discs and housing spigots at the same time, the polarisation index should be in the order of 2 or greater finally pulling home by using the housing and at 20°C.
The load cable termination should be placed on top of the The following 'jumper' connections on the AVR should be winding lead termination and clamped between the two nuts checked to ensure they are correctly selected for the provided, as shown below. generating set application: 1) Frequency selection Ufro switch position selected to suit operating frequency.
In addition remove the AVR housing cover and turn "VOLTS" control fully anti-clockwise. Start the generating set and run on no-load at nominal frequency. Slowly turn "VOLTS" control potentiometer clockwise until rated voltage is reached. Refer to Fig. 1 for potentiometer location.
The purpose of the time delay is to reduce the generator kW 4.7.4 EXC TRIP (Excitation Trip) below the available engine kW during the recovery period, thus allowing an improved speed recovery. An AVR supplied from a permanent magnet generator inherently delivers maximum excitation power on a line to Again this control is only functional below the "knee point", line or line to neutral short circuit.
SECTION 5 INSTALLATION - PART 2 5.1 GENERAL 5.2.1. CONNECTIONS ON MV & HV GENERATORS The extent of site installation will depend upon the generating set build, e.g. if the generator is installed in a canopied set with integral switchboards and circuit breaker, on site installation will be limited When making connections to the insulated terminals to connecting up the site load to the generating set output the incoming cable termination should be placed on top...
5.4 PROTECTION On MV and HV generators the main stator winding has six leads brought out to terminals in the terminal box. The three Although the AVR incorporates certain protective elements leads brought to the neutral terminal have been arranged to as already described, it is the responsibility of the end user allow for the provision of differential protection with the and his contractors/sub-contractors to ensure that the overall...
SECTION 6 ACCESSORIES 6.1 GENERAL Reference should made generating manufacturer's instructions for setting the governor controls. Generator control accessories may be fitted, as an option. If fitted at the time of supply, the wiring diagram(s) in the back 6.2 DROOP of this book shows the connections.
6.3.1 RESETTING THE BREAKER If the droop accessory has been supplied with the generator it will have been tested to ensure correct polarity and set to a nominal level of droop. The final level of droop will be set In the event of operation of the circuit breaker, indicated by during generating set commissioning.
Danger, refers to immediate hazards which will result in severe injury or death to personnel. Danger ! With the switch across K1-K2 open start the generating set. Close the switch across K1-K2 and turn the "I/LIMIT" control potentiometer clockwise until required current level is observed on the clip-on ammeter.
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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 the goods have been notified as ready for despatch by N.I. or twelve months from the date of first commissioning (whichever is the shorter period).
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