Woodward easYgen-3200XT-RENTAL 8440-2285

Woodward  easYgen-3200XT-RENTAL 8440-2285

easYgen-3100XT-RENTAL 8440-2284

easYgen-3200XT-RENTAL 8440-2285

easYgen-3200XT-LT-RENTAL 8440-2286

easYgen-3400XT-P1-RENTAL 8440-2287

easYgen-3400XT-P2-RENTAL 8440-2289

easYgen-3500XT-P1-RENTAL 8440-2288

easYgen-3500XT-P1-LT-RENTAL 8440-2283

Power Factor is defined as a ratio of the real power to apparent

power. In a purely resistive circuit, the voltage and current wave

forms are instep resulting in a ratio or power factor of 1.00 (often

referred to as unity).

In an inductive circuit the current lags behind the voltage waveform

resulting in usable power (real power) and unusable power (reac

tive power). This results in a positive ratio or lagging power factor

(i.e. 0.85lagging).

In a capacitive circuit the current waveform leads the voltage wave

form resulting in usable power (real power) and unusable power

(reactive power). This results in a negative ratio or a leading power

factor (i.e. 0.85leading)

Properties

Load type

Different power factor

display on the unit

Reactive power display

on the unit

Output of the interface

Current relation to

voltage

Generator state

Control signal

Inductive

Electrical load whose current waveform lags the

voltage waveform thus having a lagging power

factor. Some inductive loads such as electric motors

have a large startup current requirement resulting in

lagging power factors.

i0.91 (inductive)

lg.91 (lagging)

70 kvar (positive)

+ (positive)

Lagging

Overexcited

Capacitive

Electrical load whose current waveform leads the

voltage waveform thus having a leading power

factor. Some capacitive loads such as capacitor

banks or buried cable result in leading power fac

tors.

c0.93 (capacitive)

ld.93 (leading)-60 kvar (negative)- (negative)

Leading

Underexcited

If the control unit is equipped with a power factor controller while in parallel with the utility:

A voltage lower “-” signal is output as long as the

measured value is “more inductive” than the refer

ence setpoint

Example: measured = i0.91; setpoint = i0.95

A voltage raise “+” signal is output as long as the

measured value is “more capacitive” than the refer

ence setpoint

Example: measured = c0.91; setpoint = c0.95

In the state N.O., no potential is present during normal operation; if

an alarm is issued or control operation is performed, the input is

energized.

Fig. 55: Discrete inputs – state N.C.

In the state N.C., a potential is continuously present during normal

operation; if an alarm is issued or control operation is performed,

the input is de-energized.

The N.O. or N.C. contacts may be connected to the signal terminal

as well as to the ground terminal of the discrete input ( Ä “Sche

matic and terminal assignment” on page 75).

The following curves may be used for the analog inputs:

n Table A

n Table B

n Linear

n Pt100

n Pt1000

n AB 94099

n VDO 120° C

n VDO 150° C

n VDO 10 bar

n VDO 5 bar

The 9 setpoints of the free configurable Tables A and B can be

selected for Type definition (parameters 1000. 1050. and 1100)