The EBR-3000 relay, combined with an EBR-Z (EBR-3Z), is a digital
protection relay designed for high impedance differential protection
schemes . The intuitive operating system with validation checks and
extensive commissioning functions such as the built-in fault simula
tor allow safe and time-optimized maintenance and commissioning .
The parameter setting and evaluation software PowerPort-E can be
used consistently across the entire family of E-Series relays .
The principle of the high impedance differential protection is compa
rable with low impedance differential protection: Calculate and moni
tor the sum of all the currents flowing into the protected object, and
under non-fault conditions the sum is zero . Any differential current,
however, is forced through the high impedance of the high imped
ance relay .
The input of the high impedance relay consists of a resistance
(EBR-Z) and an overcurrent protection element (ANSI 87 in the EBR
3000) .
The following convention is important to know: Even though the
EBR-3000 measures the currents flowing through the stabilizing
resistor, all the measurements are presented as a voltage across
this stabilizing resistor (which is 2000 Ω for the EBR-Z) . The burden
of the EBR-3000 measuring input (which is in series with the EBR-Z
resistor) can be neglected compared to the 2000 Ω impedance .
The EBR-3000 monitors the magnitude of this voltage to differenti
ate between in-zone and through faults .
A varistor is built into the EBR-Z . It is connected across the input of
the relay to avoid damage to the relay caused by high voltage . The
varistor needs to be able to conduct significant power as the paral
leled CTs deliver current under special fault circumstances (e . g . in
case of a breaker failure) for more than 30 cycles .
To prevent damage to the relay due to system issues, a lockout relay
is required to short-circuit the high impedance when an trip is initi
ated .
The F810 fieldbus power system is designed to provide redundant
Foundation™ fieldbus power for Foxboro I/A Series control systems
using FBM228 modules. Eight fieldbus segments are supported. The
system comprises a baseplate which accommodates two redundant
pairs of Foxboro FBM228 modules and two Eaton F801 or F802 power
modules operating in redundant configuration. Failure alarms, galvanic
isolation, power conditioning and segment termination are incorporated
into each F80x module. In applications requiring simplex power, a single
F80x module may be used.
The Power Xpert® energy meter series power and energy meters monitor
the most critical aspects of an electrical distribution system. This premier
metering instrument uses the latest in advanced technology to make it
simple to use, powerful, scalable, and highly flexible.
Eaton’s Power-Sure 700 is a tap changing transformer that can solve
99 percent of electrical disturbance problems to better protect your
equipment. This computer-grade, three-phase transformer features
standard and advanced metering with 97 perfect efficiency.
Combining the reliable frequency regulation you expect from an
Eaton tap changing transformer with high frequency filtering and
an optional manual bypass switch, the Power-Sure 700 is the ideal
transformer for any industrial application.
Increase profitability by reducing equipment downtime
Frequent brownouts and voltage regulation problems cause costly
downtime. The Power-Sure 700 is uniquely designed with a high in-rush
current and rapid response to protect equipment and facilities against
those problems.
A transformer designed for tight spaces and small footprints
Front-only access on Power-Sure 700 units up to 150 kVA in size means
that limited space won’t stand in the way of optimal protection.
Minimise CapEx and maximise investment return with the revolutionary smart
universal marshalling solution, SUM5. MTL SUM5 combines five functions in
one modular design enabling one standard cabinet to deliver the lowest
lifetime costs and lowest installed cost while saving valuable space in a control
room.
MTL SUM5 offers a single cabinet design, with ‘plug and play’ configurable
modules for the five key marshalling functions. This eliminates the need for
intricate wiring to interconnect the components, ultimately improving uptime
and reducing the cost of wiring, installation and maintenance.
MTL SUM5’s modular design simplifies marshalling and provides increased
flexibility throughout the product lifetime. Loop disconnect is integrated in
every terminal, so loops can be easily isolated, which together with the modular
design, simplifies maintenance and keeps associated costs to a minimum.
MTL SUM5 reduces the number of marshalling components by 65% compared
to a standard solution. One MTL SUM5 universal ADIO isolator module supports
the functionality provided by 20 different MTL4500 single channel modules,
while the configurable parameters enable support for an even wider range of
applications. The marshalling solution provides comprehensive diagnostics,
notifying the process managers when action is required. It also features LED
indicators for power, function and status, which simplifies commissioning and
troubleshooting. The MTL SUM5 modules are designed for both cabinet mounting
in the control room, or field mounting. They are certified for ambient operating
temperatures from –40 to +70°C and for mounting in a Zone 2 hazardous area,
thus providing reliable operation in remote locations.

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