Nautel XR12, Руководство по предварительной установке, Страница: 31 / 76

XR12 Transmitter Pre-installation Manual Electrical requirements
Issue 0.17 2005-08-31 Page 5-1
Section 5: Electrical requirements
This section describes electrical power and electrical protection requirements associated with the
XR12 transmitter. This section includes the following topics:
• Electrical power
• Station reference ground - see page 5-4
Refer to the Nautel Site Protection Manual for information about requirements associated with lightning
protection.
Electrical power
The transmitter is preconfigured to operate from a 50/60 Hz 3-phase, 3-wire plus ground, Wye or
closed delta AC power source. You select the specific voltage range when you order the transmitter.
Nominal voltage (minimum and maximum)
The primary winding of the main AC power transformer contains taps to accommodate voltages that
differ from the ideal voltage of the power source. These taps provide increments and are selected
during installation to provide the nominal voltage for the transmitter.
The comes standard with taps for 350, 380, 410, 450, 480 and 510 Vac.
Voltage stability
The AC power source nominal voltage must be stable to within plus or minus 10% under all loading
conditions. The minimum voltage is 315 Vac, and the maximum is 561 Vac. The transmitter contains
circuitry that maintains the RF output at the preset carrier level for voltage variations within this
range.
CAUTION: Technical pre-commissioning activities described in this section
require technical decisions and the customization of electrical circuits. Do
not attempt to perform these activities unless you are a certified
electrician.