Reverse Power Relay Market - Global Industry Analysis, Size, Share, Growth, Trends, and Forecast 2018 – 2026
Reverse Power Relay
Market: Overview
An electrical
regulated switch is known as a relay. Relays are widely used where a
number of circuits need to be controlled by single signal or by other
low-power signal. Reverse power relay is a directional protective
relay, which protects back flow of power in reverse direction. A
relay is used to prevent back flow of power from an active generator
to the utility or other generator when a generator operates in
parallel with another generator or utility. The relay inspects the
power from a generator and in case the power output drops below the
set value it disconnects the generator coil to prevent power flow
into the stator coil.
A reverse power
relay is built from lightweight non-magnetic aluminum disc enclosed
in two iron core electromagnets which are fixed on a spindle. The
upper magnet is wound with voltage coil, while the other output
magnet is wound with a current coil, which is connected to the same
phase as that of the voltage coil. The current passes through the
aluminum disc to generate eddy current. However, torque is developed
due to the formation of eddy current, which tries to rotate the disc.
In normal conditions, the trip contact on the disc is open and
rotation is restricted by stoppers; however, if a reverse power
starts to flow the disc rotates in the opposite direction.
The selection of
reverse power relay depends upon factors such as sensitivity of
reverse power relay, time delay in reverse power relay, number of
phases, power supply, nominal voltage and current, frequency of
operation, operational environment, and mounting. A sensitivity of
reverse power relay specifies the power setting for activation of a
tripping mechanism. The setting is depends on the application. Time
delay deals with the time required by the relay to disconnect the
power when the preset limit is met. Some relays have inbuilt time
delay mechanism, while some have instant cut down mechanism. The
relay can be used for a Single-Phase or three-Phase depending upon
the application. The three-Phase relay is available in with
three-phase four wire relay or three-phase three wire relay. The
nominal voltage ratings of the system should be 110, 230, 380, 415
and 480 volts, and 2, 4, 6, 8 and 10 A or 5 A are the nominal current
ratings. The operational frequency of the system needs to be 50, 60,
and 400Hz for proper functioning of a reverse power relay. The
operational environment refers to the surrounding temperature.
Mounting can be of DIN rail mounting, panel, or wall mounting.
Reverse Power Relay
Market: Key Segments
The global reverse
power relay market can be segregated into type, end-use, and region.
Based on type, market can be bifurcated into single-phase and
three-phase. The single-phase relay has only one measuring element.
This relay can be used to protect generators from reverse power
conditions. It is used to prevent power flow from small gen-sets to
grid and to detect failure in the grid. The three-Phase reverse power
relay is used for three-Phase connections and functions that are
similar to the Single-Phase reverse power relay. In terms of end-use,
the reverse power relay market can be classified into telecom
equipment and household automation.
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Reverse Power Relay
Market: Regional Outlook
Based on region, the
global reverse power relay market can be split into North America,
Asia Pacific, Europe, Latin America, and Middle East & Africa.
Asia Pacific is expected to lead the global reverse power relay
market during the forecast period, followed by North America. The
reverse power relay market in Asia Pacific is anticipated to expand
at a rapid pace during the forecast period. Latin America and Middle
East & Africa are likely to account for small share of the
reverse power relay market.
Reverse Power Relay
Market: Key Players
Key players
operating in the global reverse power relay market include ABB,
Eaton, Siemens AG, Alstom, OMRON Corporation, and Schneider Electric.
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