Connections Of Current Terminals - Siemens SIPROTEC 5 Series Hardware Description

Terminal Designations
The current terminals have different designations in DIGSI, the configurator, and the device. The following
table provides an overview of the different terminal designations and order numbers of the terminals.
Terminal Configurator
Modular Device 50/60 Hz
4 protection-class TypeA-Curr.term.,
current transformers 4x prot.tion
3 protection-class TypeA-Curr.term.,
current transformers 3xprot. 1xsens.
and 1 instrument
transformer
4 instrument trans- TypeA-Curr.term.,
formers 4x measurem
Modular Device 50/60/16.7 Hz
4 protection-class TypeA-Curr.term.,
current transformers 4x prot.
3 protection-class TypeA-Curr.term.,
current transformers 3xprot. 1xsens.
and 1 instrument
transformer
4 instrument trans- TypeA-Curr.term.,
formers 4x measurem
Non-Modular Device
4 protection-class TypeB-Curr.term.,
current transformers 4x prot.
3 protection-class TypeB-Curr.term.,
current transformers 3xprot. 1xsens.
and 1 instrument
transformer

Connections of Current Terminals

5.7.2
Fasteners
The fasteners for the transformer connection are part of the current terminal (housing side). They are made of
a stress-crack and corrosion-free alloy. The head shape of the clamping screw allows the use of a DIN 5.5 x 1.0
screwdriver or a PZ2 screwdriver. Siemens recommends a PZ2 screwdriver.
Connection Elements and Conductor Cross-Sections
The following connection types are possible:
•
Stranded-wire conductor with ring-type lug
•
Stranded-wire conductor with bootlace ferrule
•
Solid conductor
Siemens recommends the use of ring-type lugs with the dimensions shown in the following figure. Use copper
cables only.
2 The equivalent 50/60/16.7-Hz terminal is used as a re-orderable single part.
SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-C, Edition 10.2017
DIGSI Display on the
Device
Current TBC4PROTA
4x protection
Current 3x TBC3PROTA1M
prot., 1x sensi-
tive
Current TBC4M
4x sensitive
Current TBC4PROTA
4x protection
Current 3x TBC3PROTA1M
prot., 1x sensi-
tive
Current TBC4M
4x sensitive
Current TBC4PROTB
4x protection
Current 3x TBC3PROTB1M
prot., 1x sensi-
tive
Working on the Device
5.7 Installing Current and Voltage Terminals
Terminal Labeling Ordering No.
(Short Desig-
nation)
C73334A 1A18 *7*
P1Z512
C73334A 1A18 *8*
P1Z529
C73334A 1A18 *9*
P1Z536
C73334A 1A17 *7* P1Z512
C73334A 1A17 *8* P1Z529
C73334A 1A17 *9* P1Z536
C73334A 1A18 *5* P1Z1869
C73334A 1A18 *6* P1Z1647
2
2
2
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