Nautel NX300, Руководство по установке

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NX300 Installation Manual Commissioning tasks
Issue 3.0 2012-11-01 Page 10-1
Section 10: Commissioning tasks
The transmitter contains solid-state devices that may be damaged if subjected to excessive heat or
high-voltage transients. Ensure that circuits are not overdriven or disconnected from their loads while
turned on.
The transmitter was precisely calibrated and tested during manufacturing. Do not change any
adjustments other than those specified
Pre-commissioning tasks
1. Confirm the ac power source's nominal, loaded, phase-to-phase, rms voltage.
2. Ensure that ac power source is switched off at the safety interlock switch.
3. Identify which primary winding taps should be used and connected to the transformer's ac
power input (
Line
) terminals. See Table 4.1 on page 4-2 .
4. Confirm that the taps are configured correctly.
5. Remove the rear filters from the ttransmitter and spray them with filter coat adhesive spray
(Nautel Part # HQ59), located in the ancillary kit. Re-install the rear filters on the
transmitter.
6. Terminate the transmitter's RF output into a precision, 50
Ω
, resistive dummy load that is
able to dissipate the RF power being applied to it: 450 kW total required.
WARNING: Before applying ac power and turning on the transmitter,
you must customize some circuits to the station's power source and
operating requirements. Do not perform this pre-commissioning
unless you are a station engineer or a competent electronics
technician.
WARNING: If you do not observe this precaution, you could be
seriously injured or killed by the voltages on the circuit breaker and
the transformer terminals.