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83488001 Revision N
4.2.
Ventilation Requirements
This instrument is fan 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 inch (2.5 cm) on each side.
Cooling air exits through the rear of the unit, and enters through the side panels and around
the HV tank. This power supply should not be operated with its cover removed since the
cover directs the flow from the internal fan.
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 45°C. This may
require addition of a system heat exchanger.
4.3.
Orientation
The power supply must be operated in a level horizontal orientation. More than a quarter of
an inch (6.25mm) difference in height in any direction could potentially cause an arcing
condition in the high voltage tank and should be avoided.
4.4.
AC Power Connection
For 200-240VAC models, the maximum voltage allowed between any
two AC input terminals is 264VAC. For 380-440VAC models, the
maximum voltage allowed between any two AC input terminals is
460VAC. If this voltage is exceeded, catastrophic damage will result,
that is not covered by TDK-Lambda Americas standard warranty.
The customer’s AC power line connects to the 802 via a UL/CSA approved 5 position
terminal block on the rear panel of the unit (see Figure 1). Only use a power cable with the
correct voltage and current rating (see Table 2). The ground wire must be equal to or larger
than the recommended gauge. Secure grounding of the input AC power is required to reduce
the risk of electric shock. The metal chassis of the power supply is grounded through the
earth wire at the input AC power terminal block. Use extreme caution when connecting input
AC power and never apply the incorrect input power.
An external switch or circuit breaker with the following parameters must be used as means of
disconnection:
a) Rated voltage not less than maximum rated voltage of the power supply
b) Rated current not less than 150% of the power supply rated current
The switch or circuit breaker must be located in proximity to the power supply and within
easy access of the operator. The switch or circuit breaker must be marked as disconnecting
device for the equipment.
The Protective Earth Ground
must be connected before applying
AC Line Power to the 802.
Summary of Contents for 802 Series
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