Woodward MicroNet TMR 5009FT, Инструкция по установке и эксплуатации оборудования

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Manual 26518V2 5009FT Installation/Hardware
Woodward 64
Real Power Sensor (RPS)
The Real Power Sensor is used to sense the real power being produced by a generator, or flowing
through a tie line. Woodward Real Power Sensors sense three phase voltages and three phase currents.
The RPS compares each phase’s voltage to current relationship and develops a 4–20 mA output
proportional to real power.
The RPS provided with a standard 5009 system accepts only 0–5 A and has a kW and VAR readout. The
“KW Readout” terminals provide a 4–20 mA signal proportional to real power, which is used by, and
compatible with, the 5009 control.
Woodward-manufactured Real Power Sensors have a 2.5 Hz low pass filter (400 ms lag time) on the
output to filter out the high frequency noise typically created in a switchgear-type environment. If another
vendor’s watt transducer is used, verify that it has similar filtering criteria before it is applied with the 5009.
For more information on Woodward Real Power Sensors, refer to Woodward manual 82018.
Real Power Sensor Installation and Wiring
Mount the Real Power Sensor using the four mounting holes provided on the flanges of the enclosure
(see Figure 8-5).
Connect external wiring to the Real Power Sensor as shown in Figure 8-6. When making wire
connections, observe the following wiring recommendations:

Use 0.5 mm² (20 AWG) or larger stranded, twisted shielded wire for all signal-carrying wires.

Use 0.8 mm² (18 AWG) or larger stranded wire for all potential and current transformer connections.

Ensure all wires shown in Figure 8-5 as shielded are actually shielded wires.

Do not place shielded wires in cable conduits with high-voltage or high-current carrying cables.

Do not connect the cable shields to any external grounds. The cable shield is grounded at the power
sensor end only.

Make sure that cable shields are connected through all intermediate terminal blocks from the signal
source to the signal termination. (Do not leave any floating grounds.)
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