KMB NOVAR-1007 - Page 39

Novar 1xxx KMB systems
39
• alarm actuation
Table 4.5: Alarm – Indication
# condition description minimum delay of
activation /
deactivation
1
undercurrent
current at metering current transformer’s secondary
side under minimum measurement current
5 / 5 seconds
2 overcurrent current at metering current transformer’s secondary
side over 120% of nominal value setting (6 A / 1.2
A)
immediately
3
voltage failure
measurement voltage not detected ( < 30 Veff ) 5 / 5 seconds
4 undervoltage voltage one-minute moving average value lower
than the undervoltage threshold specified
(parameter 31)
maximum 1 minute
(depends on the
extent of
undervoltage)
5 overvoltage voltage one-minute moving average value higher
than the overvoltage threshold specified
(parameter 32)
maximum 1 minute
(depends on the
extent of
overvoltage)
6 THDI > THDI one-minute moving average value higher
than the THDI threshold specified (parameter 33);
works on loads 5% and higher
maximum 1 minute
(depends on the
level of THDI)
7 THDU > THDU one-minute moving average value higher
than the THDU threshold specified (parameter 34)
maximum 1 minute
(depends on the
level of THDU)
8 CHL > CHL one-minute moving average value higher than
the CHL threshold specified (parameter 35)
maximum 1 minute
(depends on the
level of CHL)
9 compensation
error
power factor fifteen-minute moving average value
outside range 0.9L to 1.00; works on loads 5% and
higher
maximum 15
minutes (depends
on the level of
power factor)
10
export negative active power one-minute moving average
value detected (flow of power from appliance to
source)
maximum 1 minute
(depends on the
level of active
power)
11
number of
switching
operations
exceeded
number of connects and disconnects od a section
has exceeded the limit setting
immediately
12
section error
permanently wrong section value detected in
compensation (usually section failure)
5 connections +
5 disconnections
13
overheated temperature one-minute moving average value
higher than the temperature threshold specified
(parameter 37)
maximum 1 minute
(depends on the
level of
temperature)
14
external alarm second metering rate input switched on 5 / 5 seconds
Note: Conditions shown above in bold type are set by default.