ABB RES670 Technical Manual page 720

Section 19
Station communication
714
Measurands
Function blocks in monitor direction for input measurands. Typically connected to
monitoring function, for example to power measurement CVMMXN.
Measurands in public range, I103MEAS
Number of instances: 1
The IED reports all valid measuring types depending on connected signals.
Upper limit for measured currents, active/reactive-power is 2.4 times rated value.
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 maxVal.
You can use 2.4 times rated as maxVal, but as there is no way to 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 maxVal yields the best
accuracy.
Table 546: I103MEAS supported indications
INF Description
148 I_A
144, 145, I_B
146, 148
148 I_C
147 IN, Neutral current
148 V_A
148 V_B
148 V_C
145, 146 V_A-V_B
147 UN, Neutral voltage
146, 148 P, active power
146, 148 Q, reactive power
148 f, frequency
1MRK 511 408-UUS A
Phasor measurement unit RES670 2.2 ANSI
Technical manual
M11874-382 v2
M11874-385 v8