Hitachi EC702MP-BB3, Operation Manual

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E-Compact MP-BB3 Series
4.6.8. Power Supply Redundancy Operation / Power Reduction
The power supplies use a quick-connect system that allows the unit to be easily removed from the front of
the power amplifier chassis. The power supply includes power factory correction, built-in I-rush protection,
as well as overload protection (over-temperature, voltage, and current). The configuration of 2 PS’s per
power amplifier provides a soft-fail mode. In the EC704MP-BB3, if one PS is removed, the output power
is reduced to 50% (see table above) of the nominal output power.
Power Supply redundancy operation – ATSC 1.0 – PS Mean-Well RCP1600-48:
Transmitter Input Voltage
Number of PS
operating
Output Power
EC702MP-BB3 100 ~ 253 VAC
1 100%
2 100%
EC704MP-BB3
100 ~ 180 VAC
1 50%
2 100%
180 ~ 264 VAC
1 70%
2 100%