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4. INSTALLATION
4.1.
19-Inch Rack Mounting
This power supply is intended for mounting on a benchtop or in a conventional 19-inch
equipment rack with optional rack adapters.
The PHV must never be installed without support in the back or sides of the unit. The PHV
should be mounted on support rails or on a suitable shelf or supports inside the rack.
4.2.
Ventilation Requirements
Units rated at 350Watts and below are convection cooled, units rated at greater than
350Watts are forced air cooled. Sufficient space must be allocated so that a free flow of
cooling air can reach the back and sides of the instrument when it is in operation. Ensure
these clearances are met for adequate air flow:
4 inches (10 cm) rear.
1.75 inch (4.6 cm) on top and bottom.
When operating in an enclosed system, care must be taken to ensure the ambient inlet air to
the power supply does not exceed the maximum operating temperature of 40°C. This may
require addition of a system heat exchanger.
Do not operate bench top units without the feet installed. Do not expose the unit directly to
sunlight to avoid unwanted thermal effects.
4.3.
Orientation
The power supply can be operated in any orientation.
4.4.
AC Power Connection
Check that the input voltage rating of your PHV supply is compatible with available AC
power. For models rated at 1400W or less, the AC input power is 115VAC±10% single phase
(1P115). For models with a power rating above 1400W, the AC input power is 208VAC±10%
3 phase (3P208). The AC input rating of the unit is included in the part number label on the
rear panel. If in doubt please contact the factory.
The unit is equipped with a protective earth in the AC connector or terminal block. For
protection against electric shocks, the unit must be connected to the AC power via a
suitable 3 or 5-pole cable with a non-fused earth conductor.
NEVER INSTALL THE PHV SO ITS WEIGHT IS SUPPORTED
ONLY BY THE OPTIONAL FRONT PANEL RACK ADAPTER!
FOR
115VAC
SINGLE
VOLTAGE
ALLOWED
TERMINALS IS 126VAC. FOR 208VAC THREE PHASE MODELS,
THE MAXIMUM VOLTAGE ALLOWED BETWEEN ANY TWO AC
INPUT TERMINALS IS 228VAC. IF THIS VOLTAGE IS EXCEEDED,
CATASTROPHIC
COVERED BY TDK-LAMBDA AMERICAS STANDARD WARRANTY.
12
83550001 Revision C
PHASE
MODELS,
BETWEEN
ANY
DAMAGE WILL
RESULT,
THE
MAXIMUM
TWO
AC
INPUT
THAT
IS
NOT
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