hager HZI910, Руководство пользователя, Страница: 21 / 27

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PROGRAMMING PROGRAMMING
Voltage thresholds
LCD Denomination Setting range Default values
oU Network 1 over voltage threshold 102 - 120% 115%
oUh Network 1 over voltage threshold hysteresis 101 - 119% (< oU) 110%
uU Network 1 under voltage threshold 80 - 98% 85%
uUh Network 1 under voltage threshold hysteresis 81 - 99% (> uU) 95%
oU Network 2 over voltage threshold 102 - 120% 115%
oUh Network 2 over voltage threshold hysteresis 101 - 119% (< oU) 110%
uU Network 2 under voltage threshold 80 - 98% 85%
uUh Network 2 under voltage threshold hysteresis 81 - 99% (> uO) 95%
Values defined are % of nominal values.
Hysteresis thresholds must be programmed according to over and under voltage thresholds
(respectively under & above).
Frequency thresholds
LCD Denomination Setting range Default values
oF Network 1 over frequency threshold 101 - 120% 105%
oFh Network 1 over frequency threshold hysteresis
100,5 - 119,5%
(< oF)
103%
uF Network 1 under frequency threshold 80 - 99% 95%
uFh Network 1 under frequency threshold hysteresis 80,5 - 99,5% (> uF) 97%
oF Network 2 over frequency threshold 102 - 120% 105%
oFh Network 2 over frequency threshold hysteresis
100,5 - 119,5%
(< oF)
103%
uF Network 2 under frequency threshold 80 - 99% 95%
uFh Network 2 under frequency threshold hysteresis
80,5 - 99,5%
(> uF)
97%
Values defined are % of nominal values.
Hysteresis thresholds must be programmed according to over and under frequency thresholds
(respectively under & above).
Timers
LCD Denomination Setting range Default values
Mft
Main Failure Timer From
Delays priority network failure detection
From 0 to 60 s 5 s
dtt
Delay on transfer timer From
Emergency network stability validation before transfer
From 0 to 60 s 5 s
0Mf
O Main Failure Timer From
Rest in O position when transferring
from main network to emergency network
From 0 to 20 s 0 s
Mrt
Main Return Timer From
Main network stability validation before re-transfer
From 0 to 30 min 2 min
0Mr
O Main Return Timer From
Rest in O position when re-transferring from emergency network
to main network
From 0 to 20 s 0 s
Cdt
Cool Down Timer From
Allows generator cooling down period after load’s
retransfer from emergency source (generator) to Main source
From 0 to 10 min 4 min