DYNAWATT 4000, User Manual

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OPERATION
Figure 4. At full power the system delivers 4000 Watts AC and can deliver higher peak out put
on a temporary basis. However, the system automatically shuts off in the event of a continuous
overload. This chapter explains how the user can avoid this situation arising. It deals with four
areas.
1. Motor speed
2. Overload
3. Start phase
4. Remote control
Engine speed
At idling speed the generator delivers a percentage of its potential output. Generation of
the maximum output requires a higher engine speed. Figure 4 shows a performance curve
for calculating the drive ratio, the output available from the system on idling speed and the
minimum engine speed required in order to achieve the system’s maximum output.
Overload
With most overload situations there are three adjustment options.
1. Reduce the electrical load
2. Increase the motor speed slightly
3. Shut off the entire power consumption temporarily by switching off the control unit or
switching to STANDBY on the remote control. This option avoids the system automatically
shutting down. The load must then be reduced or the motor speed first increased.
Start phase
Electrical consumers (in particular electric motors) take up far more current when they are
switched on than when in operation. Electric motors are amongst the biggest ‘consumers of
electricity’, e.g. an air conditioning system which requires 6 - 7 amps when running operation
can require a starting current of up to 50 amps. The DYNAWATT 4000 delivers up to 23 amps
starting current. In some situations the user will have to follow the start-up procedure as
shown below:
1. Switch off all loads
2. Switch on the largest load first
3. Switch on the remaining small loads.
If the starting current for a load is too high then a soft start can be connected between
the DYNAWATT and the user. The soft start reduces the starting current by up to 70% by
electronically slowing down the start-up speed of the user. This enables motors with
considerably higher starting currents to be operated.
Remote control (option)
STANDBY
The system is switched to ‘STANDBY’ by pressing the toggle switch. In this state there is no
voltage and the ‘STANDBY’ LED light comes on.
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