OM POWER OM2500 A-F, Инструкция по эксплуатации

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3.2. Power Supply
Power supply of the amplifier is comprised of two of 2,0 kVA toroidal transformers. A soft
start is provided using relays and resistors.
The high anode voltage is made by combining 8 x 400 V (total 3200V) @ 1.5A. Each has its
own rectifier and filter. In the high voltage circuit, safety resistors are employed to protect the
amplifier against overload.
The source for screen grid is regulated by parallel stabilization with MOSFET transistors and
delivers a voltage of 330V at 100mA.
The -120V for the control grid is regulated with zener
diodes.
3.3. Safety Devices
Control and monitoring circuits ensure control and safety during malfunctions of the PA.
These are on the Control board, which is located on the chassis subpanel.
4. INSTALLATION
NOTE
Read this chapter carefully prior you will start installation. Before unpacking inspect shipping
woody container first, if it is not damaged. Keep all of packing parts for possible future
shipment. Check unpacked power amplifier. If you find some damaging, contact your dealer
immediately to keep full warranty.
During installation go step by step according to next parts.
4.1. Grounding
CAUTION
The amplifier has to be grounded properly! Connect the screw on the rear panel of the
amplifier to your local grounding system with a copper cable, use a cross-section of 4
mm
2
at least .
Connect your transceiver to the same grounding system of your shack carefully!
Use minimum length cables and make certain that the connections are both physically and
electrically sound. With poor grounding, you may risk damaging your equipment, having
problems with TVI/BCI or your transmitted signal may be distorted.