CIRCUTOR CDP-0 - Manual (Page 29)

CDP
Instruction Manual 29
Table 12: CDP-G programming (Single-phase installation with 3 loads to connect).
VARIABLE VALUE
Inverter power 10000 W
Number of inverters 1
Phase control Single-phase
Injection margin 0 %
Load management Mode Dynamic
Max. modulation value 90 %
Max. grid contribution 50 %
Reconnecting time 5 minutes
Relay 1 Relay 2 Relay 3
Power 2000 W Power 2000 W Power 1000 W
Min.
connection
time 2 minutes Min.
connection
time 2 minutes Min.
connection
time 90 minutes
• Max. modulation value = 90%. This means that as long as the ratio be-
tween Pconsumed/Available PV Power is below 90%, the CDP-G will try to
connect the associated loads.
• Max. grid contribution = 50%. This means that as long as the load can op-
erate with less than 50% of the power in the distribution lines, the CDP-G will
keep the loads connected. If it needs more than 50% of the grid power, it will
disconnect the loads connected to the relays.
In this situation, the CDP-G checks its working conditions to connect the first
load:
• Condition 1:
𝑃𝑃𝑃𝑃𝑃𝑃𝑃𝑃𝑃
𝑃𝑃𝑃𝑃𝑃𝑃𝑃𝑃 𝑃𝑃𝑖𝑃𝑖𝑖𝑃𝑖
𝑥 100 ≤ 𝑀𝑚𝑥. 𝑃𝑃𝑃𝑃𝑚𝑚𝑖𝑚𝑃𝑃 𝑖𝑚𝑚𝑃𝑃
(
4000
10000
𝑥 100 = 40%)  40% ≤ 90%  this condition is met
• Condition 2:
-If Injection Margin = 0%
 It checks whether:
Pgrid < 2 x (0.03) x Pconsumed
-If Injection Margin
≠ 0%  It checks whether:
Pgrid < 2 x Injection Margin x Pconsumed
0 < 2 x 0.03 x 4000
 this condition is met
If the 2 conditions are met, the relay closes and connects
the load. ( Figure 27)