Operation Manual - Hobart 2400 Compact – 120 / 140 / 180 kVA
Set-up Lock / Output Mode / Compensation
Document no. 578.430AB
Page 56 of 75
7.13 Door Switch
Some GPU units have a door interlock switch installed on the front & back door. If either the front or
back door is opened the unit will shut off when this submenu is set to Active. Use this submenu to
bypass the door switches during maintenance operations.
Go into the Setup Menu and then scroll up or down to the Door Switch submenu. Press the center
●
button to enter the submenu and then press the
●
button again to allow the value to be changed. Press
the up or down arrow buttons to change the selection. Press the center
●
button to record the new value.
Press the LEFT arrow button to exit the submenu and return to the submenu list.
7.14 Cable Temperature
Some aircraft cables have temperature sensors installed in the connector. This submenu allows the unit
to accept Normally Opened or Normally Closed temperature sensor switches to be used and applies for
both cables.
Go into the Setup Menu and then scroll up or down to the Cable Temperature submenu. Press the center
●
button to enter the submenu and then press the
●
button again to allow the value to be changed. Press
the up or down arrow buttons to change the selection. Press the center
●
button to record the new value.
Press the LEFT arrow button to exit the submenu and return to the submenu list.
7.15 Neutral Voltage Supervision
If the output Neutral wire is not connected to the chassis ground then the unit can monitor the voltage
difference between aircraft neutral and ground. If the voltage is greater than the set value (typically 42
volts) an unsafe condition exists and the unit will shut off the output power. The default value is 42
volts and the function is disabled if the value is set 0.0 volts and applies for both cables.
Go into the Setup Menu and then scroll up or down to the Neutral Voltage Supervision submenu. Press
the center
●
button to enter the submenu and then press the
●
button again to allow the value to be
changed. Press the up or down arrow buttons to change the selection. Press the center
●
button to record
the new value. Press the LEFT arrow button to exit the submenu and return to the submenu list.
7.16 Earth Leakage Level
If the output Neutral wire is connected to the chassis ground and the neutral wire breaks while there is
an unbalanced aircraft load then an unsafe condition exists. This function monitors the current in the
ground wire. If the current exceeds the set value (typically 15 A) for a set time (set in the Earth Leakage
Delay submenu), an unsafe condition exists and the unit will shut off the output power. The default
value is 15 A. The function is disabled if the value is set to 0.0 A and applies for both cables.
Go into the Setup Menu and then scroll up or down to the Earth Leakage Level submenu. Press the
center
●
button to enter the submenu and then press the
●
button again to allow the value to be changed.
Press the up or down arrow buttons to change the selection. Press the center
●
button to record the new
value. Press the LEFT arrow button to exit the submenu and return to the submenu list.
OM2252
Rev 0 December 15 2016
