Quadlogic MiniCloset-5c, Руководство по установке, Страница: 64 / 117

Chapter 5 Using the Meter
© COPYRIGHT 2009
Quadlogic Controls Corporation
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can be negative, depending on the nature of the load. Negative values indicate a capacitive
load while positive values indicate an inductive load.
3. Scroll down by pressing and releasing the Display Scroll button until the following
screen is displayed:
Under normal conditions the phase angle (x.x˚) should be between -30˚ and +30˚ and the
power factor should be a number between 0.80 – 1.0.
Power factor for inductive loads will typically be lower than that of resistive loads, typically
between 0.60 and 0.80.
If the phase angle on the lower left is a number close to 180˚ it indicates the CT was
installed backwards, or is 180˚ out-of-phase. If the angle is close to 120˚, at least two CTs
have been cross-phased, and a similar number will appear in the phase angle data in
Phase 2.
4. To view screens for phases 2 to 24, repeat steps 1 to 3 as above.
R
ESETTING
D
EMAND
V
ALUES
(F
OR
C
OMMERCIAL
A
PPLICATIONS ONLY
)
Use the following procedure to reset the Demand registers to zero:
BE CERTAIN TO RECORD THE CURRENT PEAK DEMAND (WITH THE TIME AND DATE) FOR
EACH METERING POINT MEASURED BY THE MC-5c, BEFORE RESETTING THE DEMAND.
Once you reset the demand according to the instructions below, you cannot
retrieve any prior demands locally.
If you are unsure, then using the above instructions,
scroll through to the demand (kW) and record the demand value (kW) for each metering
point. (As a back up, locally resetting the demand will obviously not delete the demand from
the demand values already retrieved and stored in the meter, Transponder or software.)
1. Press and hold the Demand Reset button.
2. The LCD will initially display the Quadlogic Copyright message.
3. The LCD will then display the Dmdreset event screen:
4. Keep the Demand Reset button depressed until the screen updates and displays the
current date and time. This signifies that the demand has been reset.