Line Overvolta Ge Detection Level; Alternate Power Factor Calculation; Auto Reset; Line U Ndervoltage Detection Level - Westinghouse IQ DATA PLUS II User Manual

Line metering and protection system
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TD 17271A
DIP
Slide
Switch
Switch
SW5
o/o
Line Overvoltage Detection Level -
6.1.17
Plus I I can be set to detect an overvoltage condition as a
selectable level. The available range is from 105 to 1 40% of
the nominal AC line voltage. As the resu lt of a detected level,
the Trip and Alarm Relays may be actuated.
SW5, Nos.
and 3
Switch
1 , 2,
as shown in Table 6.0.
SW2, Nos.
Note also that Switch
response to a detected overvoltage condition, as described
in Paragraph 6.1 .6.
Table
LINE OVERVOLTAGE DETECTION
SW5
% Detection
Level
1
1 05
ON
1 1 0
OFF
1 1 5
ON
1 20
OFF
1 25
ON
1 30
OFF
1 35
ON
1 40
OFF
Note: If the protection function switch is in the ON position
and you wish to disable a particular protection function, set
its specific detection response to No Alarm or Trip. Example:
To disable Overvoltage refer to Table 6. D and set Switch
No.
No. 2
1 ON and
ON.

Alternate Power Factor Calculation

6.1.18
power factor calculation for the IQ Data Plus II is Wf\(W 2 + Q 2
for sinusoidal loads. If the user has a load waveform that is
nonsinusoidal (e.g. chopped) or a load that is extremely light,
Courtesy of NationalSwitchgear.com
IQ DATA PLUS II INSTALLATION RECORD SHEET: SW5
Setting
ON/OFF
Combinations
-
1
2
-
-
3
4
-
-
5
6
-
-
7
-
8
The IQ Data
determine the detection level,
and
1
2 determine the unit's
6.0
(%
LEVEL )
Switch Settings
2
3
ON
ON
ON
ON
OFF
ON
OFF
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
SW
- The standard
T able
N
6
.
Description
Percent of nominal monitored line voltage
to cause overvoltage
=
__
(1 05/110/1 15/120/125/130/135/140%)
Alt. Power Factor Calculation ON
Auto Reset attempt 3 times within 3 seconds. ON
U ndervoltage % detection point
(95/90/85/80/75/70/65/60%)
the alternate calculation can be enabled with
Applications that may require the alternate calculation include
lighting loads, computer room monitoring, and loads at less
than 20% of the current transformer full load rating.

Auto Reset -

6.1 .19
position will enable the IQ Data Plus II to attempt an auto reset
based on any protective function. The unit will attempt to reset
itself 3 times in 3 seconds by monitoring the line and looking
for a fault. If the condition still exists, the IQ Data Plus II will
remain off-line until an operator resets it, either locally or over
IN COM .
o/o
Line Undervoltage Detection Level -
6.1.20
Plus I I can be set to detect an undervoltage condition at a
selectable level. The available range is from 60 to 95% of the
nominal AC line voltage. As the result of a detected level, the
Trip and Alarm Relays may be actuated.
SWS, Nos. 6,
Switch
as shown in Table 6.P.
Note also that Switch
response to a detected undervoltage condition, as described
in Paragraph 6.1 .7.
LINE UNDERVOLTAGE DETECTION
% Detection
Level
95
90
85
80
2
75
70
65
60
37
IQ DA TA PLUS I I
Refer to Table 6.0
Disabled
=
OFF
Enabled
=
Enabled
=
OFF
Disabled
=
%
=
__
Refer to Table 6.P
SW5, No. 4.
SWS, No. 5
Setting Switch
The IQ Data
and
7
8 determine the detection level,
SW2, Nos. 3 and 4
determine the unit's
Table 6.P
(%
LEVEL )
SWS
Switch Settings
6
7
ON
ON
OFF
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
OFF
to the ON
8
ON
ON
ON
ON
OFF
OFF
OFF
OFF

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