jcb G20, Руководство оператора

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Maintenance
Engine
95 9831/0650-3 95
Standard alternators are equipped with 12 cables to offer different voltages (e.g. 230/400/460/800V).
The alternator must always be earthed by sufficiently rated cable, using one of the inside or outside terminals.
For the electrical connections, use wires suitable for the power of the generator and connect them to the
terminal board.
After completing output connections, ensure that the terminal box cover is securely in place.
Make sure the terminal box cover is fitted at all times.
Figure 74.
DSR Digital Regulator
This manual contains information on the operation and use of the DSR digital regulator.
In order to avoid damage to persons and/or property, only qualified personnel, having full knowledge and
understanding of the information contained in this manual, should perform the procedures described herein;
when power to the unit is on, the voltage present may be lethal for the operator.
All connections must be made with the power off. The plastic protections on connectors must not be removed
for any reason whatsoever.
Introduction
Since the regulator is designed to control many different types of generators, it must be appropriately configured
to obtain the best performance.
Most of the settings are stored in a non-volatile integrated memory (EEPROM).
The first time the regulator is turned on, a default configuration will be present, which satisfies the most widely
requested characteristics and is suitable to facilitate installation.
The trimmers are active and the inputs for the external potentiometer and the 60Hz jumper are enabled,
therefore the basic calibrations can be performed without the use of additional equipment.
Technical Characteristics
• Full digital controlled regulator, based on DSP
• On-board machine installation
• Suitable for all self-regulated alternators
• Voltage supply: 40V AC to 270V AC (from auxiliary winding, output voltage or PMG)
• Frequency range: 12–72Hz
• Sensing of voltage with true rms or average measurement (70–240V AC)
• Maximum continuous output current: 4A DC
• Precision of voltage regulation: 1% from no-load to nominal load in static condition, with any power factor
and for frequency variations ranging from -5% to +20% of the nominal value
• Transient power drops and overvoltage within 15%
• Voltage recovery time within 3% of the value set, in less than 300 ms
• Transient overvoltage during start up: less than 5% of nominal voltage
• Single phase sensing