Current-Terminal Block for Non-Modular Devices (7xx82)
The following transformers can be installed optionally in a current-terminal block for non-modular devices:
•
4 protection-class current transformers
•
3 protection-class current transformers and 1 instrument transformer
Protection-class current transformers on non-modular devices are transformers with a rated current of 1 A or
5 A and a measuring range of 50 x rated current.
Instrument transformers are transformers with a rated current of 1 A or 5 A and a measuring range of
1.6 x rated current. Instrument transformers are also referred to as sensitive protection-class current trans-
formers or sensitive ground-current transformers.
NOTE
You can read the type of the current transformer used on the side of the terminal block:
•
C73334A 1A18 *5* = 4 protection-class current transformers
•
C73334A 1A18 *6* = 3 protection-class current transformers and 1 instrument transformer
Use the cross connector for voltage terminals shown on the right in the figure below for grouping binary
inputs and relay outputs.
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Figure 5-24 Cross Connector for Current (Left) and Voltage Terminals (Right)
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Figure 5-25 Covering Cap for Current-Terminal Block
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Figure 5-26 Covering Cap for Voltage-Terminal Block
Cover caps for sealing the contacts of the terminal block can be ordered as accessories.
Working on the Device
5.7 Installing Current and Voltage Terminals
184 SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-C, Edition 10.2017
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