AMETEK Ls Series - Manual (Page 39)

User Manual Lx / Ls Series
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3. Unpacking and Installation
3.1 Unpacking
Inspect the unit for any possible shipping damage immediately upon receipt. If damage is
evident, notify the carrier. DO NOT return an instrument to the factory without prior approval. Do
not destroy the packing container until the unit has been inspected for damage in shipment. If
possible, retain the container in the event the system ever has to be returned to the factory for
either repair of upgrades
WARNING: This power source weighs approximately 175 lbs / 79.2 Kg per chassis (2
chassis total) Obtain adequate help when moving or installing the unit. Make sure the
cabinet and rack slides used to install the Lx or Ls Series unit(s) can support the
weight of the unit(s).
3.2 Power Requirements
The Lx / Ls Series power Source has been designed to operate from a three-phase, three wire
(Wye or Delta) AC input line. A protective earth connection is required as well. (PE).
Available three-phase input setting is 208 to 230 V
LL
nominal for standard Lx / Ls models or 400
V
LL
nominal for Lx / Ls Series with option –400. All three phase input is three wire plus ground.
The 3000Lx/Ls model with standard 208V L-L AC input may be operated from a single phase
208-230 V L-N AC input as well. In this case, the single phase AC must be connected between
TB3 L2-L3 inputs for 3000Lx or TB3 ØB
– ØC inputs for 3000Ls. Note that input current will be
significantly higher than for a 3 phase AC input connection so wire size and AC disconnects used
must be sized accordingly.
CAUTION: Do not connect 400V into a unit designed for 208 use. The result could be
a severely damaged unit. Always check the input rating on the model number tag
before connecting AC input power. AC voltage input settings CANNOT be changed in
the field.
3.3 Mechanical Installation
The Lx / Ls Series AC power sources can be used free standing on a solid surface or mounted in
a 19” instrument cabinet. The units are fan cooled, drawing air in from the side and exhausting
at the rear. T
he back of each unit must be kept clear of obstruction and a 3” clearance must be
maintained to the rear. Special consideration of overall airflow characteristics and the resultant
internal heat rise must be considered at all times to avoid self heating and over temperature
problems.
Multi chassis configurations such as the 9000Lx/2 or 9000Ls/2 consist of two self-contained
4500Lx or 4500Ls power sources. They must be connected through the system interface using
the supplied DB25 to DB25 cable. Output wiring from each chassis to the EUT must be of equal
wire gage and length to ensure proper current sharing between units.
Note that for multi-chassis systems, it is recommended to turn the Master unit ON first and then
the Auxiliary unit(s). To turn the system off, turn OFF the Auxiliary unit(s) first and then the
Master unit.