ABB RELION 670 Series Technical Manual page 1193

1MRK 502 066-UUS B
Upper limit for measured voltages and frequency is 1.2 times rated value.
The upper limit is the maximum value that can be encoded into the ASDU (Application Service Data
Unit). Any value higher than this value will be tagged as OVERFLOW. The factors 1.2 and 2.4 are
taken from the 103 standard and require that a rated value to use as base exists, and then use 1.2
or 2.4 times <rated> as
propagate value to client, the use of a scale factor on <rated> does not make much difference.
You can configure client:client-scaled-max ::= 1.2 * <rated> or client-scaled-
max ::= 1.0 * <maxVal>
If the client has a hard-coded gain of 1.2 * <rated> then client-scaled-max ::= 1.2 times
<maxVal>/1.2
Resolution is <maxVal> / 4095 and hence the lowest possible
Table 901: I103MEAS supported indications
INF
148
144, 145,
146, 148
148
147
148
148
148
145, 146
147
146, 148
146, 148
148
Measurands in private range, I103MEASUSR
Number of instances: 3
Function type parameter for each block in private range.
Information number must be selected for measurands.
Table 902: I103MEASUSR supported indications
INF
1)
*
*
*
Table continues on next page
Technical manual
maxVal . You can use 2.4 times rated as maxVal , but as there is no way to
Description
I_A
I_B
I_C
IN, Neutral current
V_A
V_B
V_C
V_A-V_B
UN, Neutral voltage
P, active power
Q, reactive power
f, frequency
FUN GI
No, polled
2)
*
with CL2
* No, polled
with CL2
* No, polled
with CL2
TYP COT
2,7
3)
*
* 2,7
* 2,7
Station communication
maxVal yields the best accuracy.
Description
Meas1
Meas2
Meas3
Section 18
M11874-431 v5
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