Kikusui PAD-L III Series, Руководство по эксплуатации

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4-2 Applied Operation PAD-L
4.1 Remote sensing
The remote sensing function is intended to reduce the influence of voltage drops
affected by the load cable resistance, to keep the output voltage stable at the load
terminal. The PAD-L series' remote sensing function is capable of compensating for
up to approximately 1.2 V for a single line. Select load cables with sufficient current
capacity so that a voltage drop in the load cables does not exceed the compensation
voltage.
To perform remote sensing, an electrolytic capacitor is needed at the sensing point
(load terminal).
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NOTE
• A voltage drop that can be compensated for is approximately 1.2 V for a single
line. When remote sensing is carried out at the rated output voltage, the unit's
output is limited by the maximum voltage. Thus, in the event of a voltage drop
of 0.3 V or greater, the rated output voltage cannot be compensated for at the
load ends. In this case, use wires with larger sectional areas to reduce the
voltage drop below 0.3 V.
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Connecting procedure
1. Turn off the POWER switch.
2. As shown in Fig. 4-1, remove the sensing shorting bar.
3. Install sensing wires between the sensing terminals (+S and -S
terminals or SAMPLING terminals) and the load ends, as shown in Fig.
4-1.
To decrease output ripple voltages resulting from inductive effects, use a 2-core
shielded wire for the sensing. Connect the shield to the + (pos.) terminal.
WARNING
• For sensing wires, use cable with a higher voltage rating than the
isolation voltage of the unit. For more information, see 2.6
"Grounding the output terminal".
Protect the uncovered part of the cable with an insulation tube of
at least the isolation voltage of the unit.
CAUTION
• If the sensing wire is disconnected, the output voltage at the load
terminals cannot be stabilized, and excessive voltage may be
applied to the load. Use crimp terminals for securely connections.
• To turn on/off the power supplied to a load using a mechanical
switch, provide additional switches between the sensing wires as
shown in Fig. 4-2; turn on/off the power and remote sensing
function simultaneously.
4. Connect electrolytic capacitors (C1 and C2) between the output
terminals and sensing terminals.