Configuration Notes
81
7SS52 V4 Manual
C53000-G1176-C182-1
4.8 Configuration Notes
The 7SS52 V4 can be applied for the protection of busbar configurations with quintu-
ple busbars as a maximum and up to 48 feeders.
• When configuring the up to 12 bus zones (including up to 4 transfer bus zones) and
12 bus coupler zones, the individual bus zones (BB01 to BB12) or bus coupler
zones (TB01 to TB12) are numbered from left to right and from the top to the bottom
starting from the first main busbar to the transfer busbar or fourth main busbar. The
parameters are assigned automatically by the Plant Configuration and can be veri-
fied in the report (see Figure 4-30, page 79)..
• 2-bay bus couplers must be parameterized to bay units with successive numbers.
• Only switchgear or current transformers of the same bay may be assigned to a bay
unit. Except sectionalising isolators.
An example of a triple busbar with transfer busbars is shown in Figure 4-31, page 82.
The corresponding configuration data are collected in Table 4-3, page 83.
An example of a double busbar with a combination busbar is shown in Figure 4-32,
page 84. The corresponding configuration data are collected in Table 4-4, page 85.
Bus coupler zones are bus zones which are used exclusively for connecting bus zones
and which have no feeder bays. In most cases they occur in connection with bus cou-
plers. An example is given in Figure 4-32, page 84 (BS1, BS2).
Note
A bay (feeder bay or bus coupler) must comprise at least one isolator, one current
transformer an exactly one circuit breaker.
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