Fig. 3-4 Use Of Nominal Frequency Band For Pure Aplc (A), Pure; Dplc (B) Or Mixed Aplc/Dplc (C) Operation In - ABB ETL600 Instruction Manual

ABB Switzerland Ltd
In Table 3-1, vertical dashed arrows show where internal teleprotection
devices NSD600 can be operated, if desired. All configurations allow
the operation at least one NSD600 device. In most cases, even two
such devices can be used.
In all modes of operation, ETL600 complies to IEC publication 60495
"Single sideband power-line carrier terminals". Wherever this standard
isn't directly applicable for DPLC, the requirements have been suitably
adopted in order to allow the coexistence of APLC-, DPLC- and mixed
mode APLC/DPLC-links on the same power line and in the same
geographical area. This aspect has been addressed in Cigré
publication TB164, where the principles of DPLC operation are
explained.
a
b
c
Fig. 3-4
3-6
1KHW001489-EN
APLC
Ch 3
DPLC
DPLC
Use of nominal frequency band for pure APLC (a), pure
DPLC (b) or mixed APLC/DPLC (c) operation in ETL600
inverted mode
November 2005
Ch 2 Ch 1
Fn
Frequency
Bn
Frequency
Fn
Bn
APLC
Ch 3 Ch 2 Ch 1
Fn
Bn
Structure and Function
ETL600
Frequency