Siemens siprotec 7SA6 User Manual

Functions
6-2697SA6 Manual
C53000-G1176-C156-2
6.20 Analog Outputs (optional)
6.20.1 Method of Operation
Dependingontheorderingversionthe7SA6relayuptofouranalogoutputsareavail-
able. During the configuration of the functional scope (see Figure 5.1) it was deter-
mined which values may be transmitted via these interfaces. Up to four outputs can
be selected out of the following list:
• Measured value I
L2
(current of phase L2) in per cent of the operational nominal
current
• Measured value U
L2–L3
(phase-to-phase voltage L2-L3) in per cent of the opera-
tional nominal voltage
• Measured value |P| (value of active power) in per cent of the operational nominal
power
√3·U
N
·I
N
• Measured value |Q| (value of reactive power) in per cent of the operational nominal
apparent power
√3·U
N
·I
N
• Fault distance d in per cent of line length on the basis of the configured reactance
perunitlengthandthelinelength(Address
1110 to 1113, see also Subsection
6.1.3)
• Fault distance d in kilometres or miles, depending on the configured length unit (Ad-
dress
236, see also Subsection 6.1.1), on the basis of the configured reactance per
unit length (Address
1110 or 1112, see also Subsection 6.1.3)
• Fault current I
max
, i. e. the maximum of 3 phase currents during clearance of the
last fault, primary in Ampere, on the basis of the configured primary and secondary
nominal current (Address
205 and 206, see also Subsection 6.1.1)
The operational nominal values are the nominal values configured according to Ad-
dress
1103 and 1104 (see also Subsection 6.1.3).
The analog values are output as current source. The nominal range of the analog out-
putsis0mAto20mA,theoperatingrangemayreachupto22.5mA.Theconversion
factor and the valid range can be set.
6.20.2 Applying the Function Parameter Settings
Measure Values Once the measured values are selected (Section 5.1, Addresses 150 to 153), set the
conversion factor and the valid range for the available outputs, as follows:
for analog output 1 at mounting location “B” (Port B1):
Address
5001 20 mA (B1) = valuein%tobeindicatedat20mA
Address
5006 MIN VALUE (B1) the minimum value permitted
for analog output 2 at mounting location “B” (Port B2):
Address
5011 20 mA (B2) = valuein%tobeindicatedat20mA
Address
5016 MIN VALUE (B2) the minimum value permitted

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English