Deni 5300 Specifications download pdf (Page 16)

Magtrol Model 5300 Three Phase Power Analyzer

Chapter 4 - Operation

MODE SELECTIONS

Figure 7. Mode Selections

HOLD AVG PF PH.V.

MODE HOLD

The HOLD push-button may be depressed at any time.

When depressed, the displayed values are held and data

accumulation stops. If the AVG (averaging) function is

active when the HOLD button is depressed, the last

running average value of AMPS, VOLTS and WATTS

will be held. The HOLD and AVG functions can be

combined to provide added functions.

MODE AVG

The AVG MODE is an integration or averaging function

for the display of VOLTS , AMPS and WATTS. The VOLTS,

AMPS and WATTS data are sampled at 10 readings per

second and a running average is computed by dividing the

summed values of each parameter by the total number of

summations. When averaging is turned off, the VOLTS,

AMPS and WATTS data, their summations, and the sample

count are stored in non-volatile RAM memory. The

averaging function is useful in stabilizing the display when

digits are changing because of slowly varying values.

Integration periods from seconds to minutes may be needed

to stabilize the displayed values.

The HOLD and AVG functions can work together.

When entering AVG with HOLD off, the averaging

registers are cleared and integration starts from a zero

value. With the HOLD function active first, pressing

AVG starts the integration point from the last RAM

stored values of AMPS, VOLTS or WATTS. The

HOLD automatically resets off.

When AVG is turned off, non-averaged values are

displayed and the averaged values are then stored in

non-volatile RAM memory. Upon re-entering the AVG

mode, the stored values will be returned as the new

averaging starting points. This function allows you to

exit the AVG mode, perform some other task, then

return and continue averaging where you left off. Also,

it can be used simply to retain and recall data.

While in AVG mode and the PA power is turned off,

the last averaged values stored will be held in non-

volatile RAM and returned to the display when the PA

power is turned on and the AVG mode is reactivated.

The HOLD - AVG function permits truly integrated

power measurements where power is applied

intermittently, or where a combination of devices require

integrated measurements, with interruptions between

measurements.

NOTE: WATT-HOURS can be

determined by using the AVG

function and a timing clock.

Watt-hours = (watts avg × time

in hours).

NOTE: Power Factor (PF) can not be

averaged.

MODE POWER FACTOR (PF)

Pressing the PF (power factor) push switch displays the

power factor on the WATTS display. Power factor is

computed by:

P P P

V I V I V I

+ +

1 2 3

1 1 2 2 3 3

AVG mode is not active while in PF mode

MODE PH. V.

Pressing the PH. V push switch modifies the phase

VOLTS measurement to indicate line to line voltage on

the display by applying:

E E

LINE PHASE

= ×

This relation is valid for a balanced system. For an

unbalanced system, there can be a difference between

the displayed voltage and the true line to line value.

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Deni 5300 Specifications Page 16

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