POWER FACTOR (COS) TRANSDUCERS

Foxtam power factor transducers measure the Cosine of the phase angle between the current and the voltage. All power factor transducers require a separate auxiliary supply. At the time of ordering the input voltage and current details especially any CT and VT input ratio details must be specified. Any specific power factor scale range can also be determined. The 4KV isolated output signals are suitable for many applications, such as inputs to analogue and digital meters, PLC’s or BMS systems and in particular power factor correction systems.

Transducer types include:-

FOX.TR.COS.12 – Single phase, requiring a single current and voltage input.

FOX.TR.COS.33B – Three phase, three wire balanced load, requiring a current input from L1 and voltage inputs from L2 & L3.

Any of the above power factor transducers can be supplied with a bi-polar output (+/-) or as an example 4-12-20mA output or 0-5-10VDC.

Accuracy: Class 0.25 (down to 10% of FS)

Input Voltage:
0-50V...600VAC direct
VT ratio specify

Current input:
0-0.7A...7.5A direct
CT ratio specify 1A or 5A

Overload:
1.2 x Un & 2 x In continuous
1.5 x Un & 30 x In for 1 sec

Working range:
20-120% Un
5-120% Un

Frequency: 50Hz or 60Hz

Input burdens:
<0.2VA voltage input
<0.3VA current input

Case size: 2

TYPE

FOX.TR.COS.12 / Single phase
FOX.TR.COS.33B / 3P3W balanced

INPUTS

0-50....600VAC direct*
VT ratio*
Plus:-
0.7A....7.5A direct*
CT ratio*

COS RANGE

-0.5 to 1 to +0.5
0 to 1 to 0
Specify other

OUTPUT

+/-1mA
+/-2.5mA
+/-5mA
+/-10mA
+/-20mA
4-12-20mA**
+/-1VDC
+/-5VDC
+/-10VDC

AUX SUPPLY

24VAC
63VAC
110VAC
230VAC
415VAC
24VDC
48VDC
110VDC

*Specify exact direct input ranges required and/or CT & VT ratios and power factor scale range required

**Also possible to have a signal output for example 0-5-10VDC output or similar, consult the sales office for technical viability.