Aim-TTI LD400, Инструкция по эксплуатации

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12
Connections
Front Panel Connections
Load Input
The INPUT terminals for the load circuit on the front panel accept 4mm plugs into the end, 2mm
diameter wire into the cross hole, or ¼ inch spade connections. Their maximum current rating is
30 Amps. For higher currents (or lower circuit resistance) use the rear panel terminals;
do not
use both simultaneously .
The load circuit is isolated from ground, and potentials up to ± 300 Volts DC to ground are
allowed, but it is essential to observe safe insulation practice.
Ensure that the source is connected with the correct polarity.
The maximum current through these terminals is 30 Amps.
The maximum voltage allowed across the load is 80 Volts.
The unit does not have a fuse in the load circuit: ensure that the maximum
prospective fault current is limited to a safe level, see below.
Current Monitor Output
The Current Monitor terminals provide a voltage proportional to the load current flowing with a
scaling factor of 50 mV per Amp (4 Volts for 80 Amps full scale). The output impedance is
nominally 600
Ω
and the calibration assumes a high impedance load such as an oscilloscope.
A differential driver allows a common mode range of ± 3 Volts between the negative
monitor terminal and the negative load terminal. The output will be inaccurate (and the
unit may be damaged) if voltages exceeding this are applied.
The common mode capability is intended to accommodate any voltage drop in the load circuit
cables and to avoid difficulties with current loops. There should be an external connection
between the monitor negative and the load negative at some point in the circuit, wherever is most
convenient, except this is not normally necessary for a battery powered portable DMM.
Rear Panel Connections
Load Input
The INPUT terminals for the load circuit on the rear panel accept 4mm plugs into the end (4mm
plugs have a current rating of 32 Amps or less), 5mm diameter wire into the cross hole or 8mm
spade connections (with a maximum blade width of 16mm).
The wiring and connection arrangement must be capable of supporting the current required; for
80 Amps, 16mm
2
cable is needed.
The load circuit is isolated from ground, and potentials up to ± 300 Volts DC to ground are
allowed, but it is essential to observe safe insulation practice.
Ensure that the source is connected with the correct polarity.
The maximum current through these terminals is 80 Amps.
The maximum voltage allowed across the load is 80 Volts.
The unit does not have a fuse in the load circuit: ensure that the maximum
prospective fault current is limited to a safe level, see below.
Prospective Fault Current Protection
This unit is not intended to act as an overcurrent fault protection device for the source being
tested. If the source itself also does not include suitable overcurrent protection, and is capable of
generating substantial currents in the event of a fault, users should assess the risks involved and
consider the inclusion of an appropriate fuse, circuit breaker or easily accessible switch in the
connection between the source and this load.