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<Present demand (PV)>
It shows demand value from the time when demand span starts to present time.
[Calculation]
CT input (calculated by Eco-POWER METER)
Present
demand (kW) =
Integral electric power
until present from the start
×
60 (min.
30 (min.) Demand span
=
Integral electric power
until present from the start
×
2
Pulse input (integral pulse input from a power meter)
Present
demand (kW) =
(Integral electric power
until present from the start x pulse rate)
×
60 (min.
30 (min.) Demand span
= (Integral electric power
until present from the start x pulse rate)
×
2
<Estimated demand (EV)>
It shows the estimated demand value at the end of demand span according to the using power from the
time when demand span starts to present time.
[Calculation] (addition)
Estimated
demand(kW)
=
Present
demand
+
Power change amount
for
⊿
t minutes (
⊿
P)
×
Remaining
time
(minute)
Sampling cycle
⊿
t (minute)
[Calculation] (average)
Estimated
demand(kW)
=
Present demand
×
Remaining time
(minute)
Pass time
<Power demand threshold (SV)> It shows the threshold for demand alarm output.
<Ratio of estimated demand (SET.R)> Ratio of estimated demand to power demand alarm threshold.
<Alarm output>
When present demand or estimated demand is satisfied the setting conditions, it output alarm and it
indicates alarm.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]