Harris Broadcast Flexiva FAX 10KW, Technical Manual

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FAX 5/10/20/30/40KW
October 28, 2013
2 ‐ 11
888 ‐ 2720 ‐ 001 WARNING: Disconnect primary power prior to servicing. Copyright ©2013, Harris Broadcast
Figure 2-6 AC Mains in Amplifier
If a FAX20/30/40 is ordered without the AC Distribution panel, a breaker must be supplied for each power block and
one for each exciter. The breaker and wire size for each power block will be the same as a FAX10. Follow the AC
connection procedure for a stand ‐ alone transmitter and repeat for each power block.
Note
When connecting to a 3-Phase Wye configuration and the voltage is in the range of 190 - 264 VAC, use
the 3-Phase Delta strapping and the Neutral is not connected to the transmitter and the safety ground
connects to E7. See drawing 843-5614-482.
Caution
WHEN CONNECTING THE TRANSMITTER TO A 3-PHASE WYE CONFIGURATION
AND THE VOLTAGE IS IN THE RANGE OF 330-460 VAC, THE NEUTRAL MUST BE
CONNECTED TO THE E4-E5-E6-N TERMINAL POST TO STABILIZE THE
VOLTAGES. FAILURE TO CONNECT THE NEUTRAL CAN CAUSE DAMAGE TO THE
TRANSMITTER AND VOID THE WARRANTY. SAFETY GROUND CONNECTS TO E7.
Caution
WHEN THE SINGLE PHASE INPUTS TO THE TRANSMITTER ARE DERIVED FROM
A WYE (STAR) MAINS SERVICE, SPECIAL CARE MUST BE PAID TO THE NEUTRAL
CONNECTION, AS THE NEUTRAL CONNECTION SERVES AS THE COMMON
VOLTAGE REFERENCE TO ALL THREE PHASES. SHOULD THE NEUTRAL
CONNECTION BREAK, THE LINE-TO-LINE VOLTAGE OF EACH PHASE WILL
BECOME UNSTABLE AND INVARIABLY RESULT IN SEVERE DAMAGE TO ALL
LOADS FROM AN OVERVOLTAGE CONDITION. ACCORDINGLY, ALL NEUTRAL
CONNECTIONS SHOULD BE DOUBLE CHECKED FOR INTEGRITY, ESPECIALLY
WHEN MODULAR MAINS DISCONNECT PLUGS ARE IN USE. NEVER ALLOW THE
NEUTRAL TO BE BROKEN BEFORE THE INDIVIDUAL LINE CONNECTIONS. THIS
RECOMMENDATION HOLDS FOR ALL SINGLE-PHASE EQUIPMENT WITH A 380-
415V WYE-DERIVED FEED, NOT JUST THE HARRIS BROADCAST FAX
TRANSMITTER.