Features; General Description - Mitsubishi Electric CBV2-A01D1 Instruction Manual

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Features

1.1

General description

Mitsubishi Electric MELPRO-D Series is a digital protection relay product with a microprocessor for
protecting high/extra-high-voltage electric power system.
With its improved functions, including operation support using the advanced communication networks,
data saving at the power system faults and power system voltage/current measurement, this series of
protection relay will allow stable and effective control and monitoring of electric power systems as well as
provide high-reliable protection.
1.2 Features
(1) High-reliable protection
The product includes a three-phase undervoltage and a three-phase overvoltage element.
It is used to detect abnormal voltage between lines.
(2) Communication Network
With an open field bus system, the relays can be used to build a high-speed, high-performance
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network system. In addition, the relay's multi-drop serial wiring reduces the amount of labor
required for communication wiring.
Control of measurement values, operation status, as well as setting changes, etc., can be
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performed from a remote location.
In consideration of future network system variations and compatibility with communication
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networks, communication features are mounted in the relay using a replaceable card.
(3) Measurement & Recording Functions
Real time monitor of relay input data
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The relay can measure steady state relay input values, supporting energy management.
Fault Data Monitor
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When a fault occurs, the relay saves the past 5 effective input values and harmonics data to
assist with fault analysis.
(4) Programmable Output Configuration
The operating output contacts (DO) can be set by combining the outputs of the protection relay
element using 'OR' logic, thereby simplifying sequence design.
(5) High Accurate Digital Computation
The digital computation using high-speed sampling minimizes the effect of high harmonics, etc., and
results in highly accurate protection.
(6) Self-diagnosis
The relay continuously monitors electronic circuits from input to output so that it can detect internal
failure before that failure causes damage on the power system, thereby improving reliability.
(7) Easy Replacement
The dimensions of the panel cutout are the same as the prior MULTICAP series. Changing from an
existing relay type to this new type is easy.
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