ITB RAV-2 - E 30 - Time to Set Active Maps 2 and 3; E 31 - Minute to Set Active Maps 2 and 3; Month to Set Active Map 3; Amount of Months Where Map 3 Is Active

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Single Phase Voltage Regulator RAV-2
with control CTR-2
Instruction Manual MI-010
Page: 20/27
Rev. 06/2017
14, 17, 26 e 30 – Time to set active maps 2 and 3
Value set will be used directly as hour and together with parameters 15, 18, 27 and 31 will determine when maps 2
and 3 are active.
15, 18, 27 e 31 – minute to set active maps 2 and 3
Value set will be used directly as minute and together with parameters 14, 17, 26 and 30 will determine when maps
2 and 3 are active.
24 – Month to set active map 3
When this parameter is set to "0" activation of Map 3 will start based on setting of week, hour and minute done and
for values different from "0", eg: between 1 and 12, Map 3 will become effective in the first moment of the month
corresponding to the value set, disregarding scheduled setting of week, hour and minute, as shown in table 9.
Table 9: Month options
Valor
0 1 2 3 4 5 6 7 8 9 10 11 12
Month
All January February March April May June July August September October November December
28 – Amount of months where Map 3 is active
In this parameter the CTR-2 is set the number of months in which Map 3 remain active when parameter 24 is
programmed with a setting different from "0". In that case the parameters of week, hour and minute for deactivation
of map 3 not considered and Map 3 is deactivated when the number of months in active is complied.
Note: Observe that amount of months active of map 3 has priority over activation of map 3.
And map 2 activation has priority to parameters of map 1. So, map 1 will be active only when
none of the other are active
Note: inverse flow map has priority overall others once inverse power flow is detected and will
work according to setting of parameter 43
37 - Activation of automatic load bonus
As most of the energy dissipated in a voltage regulator is concentrated in the series winding is based on this
enrollment that regulator cooling system is sized for the total load . For this reason if the range of regulation can be
reduced, an increase in the line current can be achieved without compromising the expected isolation lifetime.
This parameter when set to " 0" keeps the regulator in normal working condition following programmed locks in
parameters 38 and 39 , and if set to 1 , the control will limit the regulation range in relation to current according to
table 10. For example , if the line current reaches 1.25 times the rated current CTR -2 regulates the output voltage
so as to ensure the position +10 derivation is not surpassed nor less than -10. If in a position outside this range , the
tap changer will be brought to the permitted band even though voltage range is not at the desired level.
38 e 39 – Position lock and manual load bonus
Adjusts the electric switch which limits the action range of the tap changer to the programmed positions from -16 to
-8 and from +8 to +16. That's the manual method to implement the load bonus. The lock of maximum position set to
8, for example, means that the tap changer will no longer be boosted when that position is achieved. Similarly, if the
minimum block is set to position -8, the regulator will buck until that position is reached.
Table 10 indicates the over current allowed for each limitation set of the tap changer.
Table 10: Current bonus.
Range of voltage regulation (%) ± 10% ± 8,75% ± 7,5 % ± 6,25% ± 5%
Max. Locking position +16 +14 +12 +10 +8
Min. Locking position -16 -14 -12 -10 -8
Over current admitted over nominal 0% 10% 20% 35% 60%
Note: If locks are assymetrically set, active load bonus would be that of bigest absolute value
40 and 41 - Voltage lock
When the line voltage drop compensation is used due to line features and current though it, an additional protection
to the first consumer may be required. The CTR-2 control can be programmed to perform compensation of voltage
drop in line to regulate at the theoretical center of charge, avoiding that the consumer closer to the regulator is not
penalized having an excessive voltage level. This is done by seting the minimum and maximum blocking voltage.
When the regulator voltage reference achieves these limits exceeding will not be allow by the control.
ITB - Equipamentos Elétricos Ltda.