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General Series Data Technical Data: Measuring Inputs - Analogue

The document provides technical specifications for measuring inputs, power supplies, digital inputs, and temperature range for a Px40 protection relay range. It details that the CT inputs can handle 1A and 5A, the terminal block has shorting to prevent voltages during maintenance, and models have an IEC 61850-9.2 process bus interface. There are three power supply options to balance deployment ease and efficiency. The digital inputs have programmable thresholds and burden switching provides immunity to false wiring equivalent to high burden trip relays. The Px40 range is tested and proven to operate from -40°C to +85°C.

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karthik
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67 views1 page

General Series Data Technical Data: Measuring Inputs - Analogue

The document provides technical specifications for measuring inputs, power supplies, digital inputs, and temperature range for a Px40 protection relay range. It details that the CT inputs can handle 1A and 5A, the terminal block has shorting to prevent voltages during maintenance, and models have an IEC 61850-9.2 process bus interface. There are three power supply options to balance deployment ease and efficiency. The digital inputs have programmable thresholds and burden switching provides immunity to false wiring equivalent to high burden trip relays. The Px40 range is tested and proven to operate from -40°C to +85°C.

Uploaded by

karthik
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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GENERAL SERIES DATA TECHNICAL DATA

Measuring inputs – analogue


All CT inputs are dual-rated at 1A and 5A
to simplify ordering and strategic spares
inventories.
The heavy duty terminal block features
integral current transformer shorting to
prevent dangerous voltages being
present should the block be removed; a
maintenance error could otherwise lead
to a potentially unsafe/lethal scenario.

Measuring inputs – process bus IEC


61850-9.2
Many models in the range are available
with an IEC 61850-9.2 process bus
interface to replace traditional analogue
inputs. This facilitates interoperability
with non-conventional instrument
transformers and merging units, with
the measuring signals marshalled via
Ethernet.

Power supplies
Three ranges of power supply options
are available at the ordering stage to
balance ease of deployment with energy
efficiency.

Digital inputs (Optos)


Extended temperature range operation
The digital status input pickup thresholds
In addition to the standard -25o C to +55o C operating temperatures claim as per IEC
are programmable, so specifying the
60255-6, the Px40 range has proven withstand capability at extremes of temperature
inputs is just a question of counting how
as per IEC 60068-2. These onerous tests were passed at -40o C and +85o C for 96
many are needed.
continuous hours in each case.
Intelligent burden switching and
compliance with the ESI48-4EB2
standard provides immunity to false
wiring pickup equivalent to the level
offered by high burden trip relays such
as MVAJ.

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