Ratings
The current ratings of the 7100A cover the range from 16 amps up to
250 amps, with only the 250A unit being fan cooled.
The voltage rating can go up to a maximum of 500 volts.
Inputs
The 7100A can accept analogue voltage (0-5V or 0-10V) or current
(0-20mA or 4-20mA) inputs.
Firing Modes
The 7100A is available with a selection of firing modes to suit most
applications.
It is suitable for controlling resistive loads with high or low temperature
coefficient, short wave infrared (SWIR) or inductive loads.
Control mode
7100A units use one of the following control parameters
RMS load voltage squared V2
RMS load
current squared I2
Load power P (up to 100 amps)
Open loop OL |
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Limits and alarms
Optional current limit which can work in all firing modes prevents
excessive currents from flowing in the load circuit.
Optional alarms can warn of thyristor short circuit or load open circuit
(GRF alarm). Additionally partial load failure with automatic set up can
detect the loss of one out of six parallel loads (DLF alarm).
Over temperature shutdown is provided with 250A fan cooled units with
optional alarm.
Fusing
High speed fuses are recommended for most applications except SWIR.
The fuses are external for units up to and including 100 amps and
internal above 100 amps.
Fuses are available either with or without microswitch indication.
International approvals
CE (EN60947-4-3); UL and cUL available up to 100A |
