CET Electric Technology
88
20105~20119
RO
Event 8
20120~20134
RO
Event 9
20135~20149
RO
Event 10
20150~20164
RO
Event 11
20165~20179
RO
Event 12
…
…
27665~27679
RO
Event 512
Table 5-28 PQ Log
Offset
Properties
Description
Format
Note
+0
RO
High-order Byte: Event Classification
UINT16
See
Table 5-30 PQ Log
Classification
Low-order Byte: Sub-Classification
+1
RO
High-order Byte: Year
UINT16
0-99 (Year-2000)
Low-order Byte: Month
1 to 12
+2
RO
High-order Byte: Day
UINT16
1 to 31
Low-order Byte: Hour
0 to 23
+3
RO
High-order Byte: Minute
UINT16
0 to 59
Low-order Byte: Second
0 to 59
+4
RO
Millisecond
UNIT16
0 to 999
+5
+6
RO
Event Value 1
INT32
See
— Event Value
RO
+7
+8
RO
Event Value 2
INT32
RO
+9
+10
RO
Event Value 3
INT32
RO
+11
+12
RO
Event Value 4
INT32
RO
+13
+14
RO
Event Value 5
INT32
RO
Table 5-29 PQ Log Data Structure
PQ Log
Classification
Sub-
Classification
Description
Event Value, Unit, Scale, Option
7. Transient
1
Transient
Triggered
Event Value 1
: Maximum of Transient (%), x100
Event Value 2
: Duration (μs)
Event Value 3:
Maximum Uan/Uab Transient (%), x100
Event Value 4
: Maximum Ubn/Ubc Transient (%), x100
Event Value 5
: Maximum Ucn/Uca Transient (%), x100
8. Dip/Swell
1
Swell Starts
Event Value 1:
Trigger Phase
B0 = Uan
B1 = Ubn
B2 = Ucn
B3 = Uab
B4 = Ubc
B5
=
Uca
Event Value 2 to 5:
Reserved
2
Swell Ends
When the
Wiring Mode
is
3P4W(WYE)
:
Event Value 1
: Maximum %Residual Uln, x100
Event Value 2
: Duration (ms)
Event Value 3
: %Residual Uan
max
/Uln
nominal
, x100
Event Value 4
: %Residual Ubn
max
/Uln
nominal
, x100
Event Value 5
: %Residual Ucn
max
/Uln
nominal
, x100
Where
Uln
nominal
=
(Ull
nominal
÷√3)
When the
Wiring Mode
is
3P3W (Delta)
:
Event Value 1
: Maximum %Residual Ull, x100
Event Value 2
: Duration (us)
Event Value 3
: %Residual Uab
max
/Ull
nominal
, x100
Event Value 4
: %Residual Ubc
max
/Ull
nominal
, x100
Event Value 5
: %Residual Uca
max
/Ull
nominal
, x100
3
Dip Starts
See
PQ Log Classification
8 =>
Sub-Classification
1
4
Dip Ends
When the
Wiring Mode
is
3P4W(WYE)
::
Event Value 1
: Minimum %Residual Uln, x100
Event Value 2
: Duration (ms)
Event Value 3
: %Residual Uan
min
/Uln
nominal
, x100
Event Value 4
: %Residual Ubn
min
/Uln
nominal
, x100
Event Value 5
: %Residual Ucn
min
/Uln
nominal
, x100
Where
Uln
nominal
=
(Ull
nominal
÷√3)
When the
Wiring Mode
is
3P3W (Delta)
:
Event Value 1
: Maximum %Residual Ull, x100
Event Value 2
: Duration (ms)