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PRS-7393 Merging unit
The PRS-7393 merging unit is used in intelligent substations. It can be connected to the conventional primary equipment using cables, and collect analog signals from the conventional primary transformers or receive digital signals from other merging units. After synchronization processing, the sampling information is provided to multiple secondary devices such as protection, measurement and control, digital watt-hour meter and digital wave recorder via the Ethernet interface (optical fiber). The data output format of the PRS-7393 merging unit conforms to the IEC61850 standard for intelligent substations.
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Scope of Application
It is applicable to intelligent substations of various voltage levels.
Advantages
01
The device adopts the 4U entire layer, reinforced case, multi-layer shielding, strict separation of strong and weak currents and other anti-vibration and anti-interference designs, which has high anti-interference performance, and is suitable for installation in harsh environments.
02
The device adopts 64-bit high-performance CPU, internal high-speed bus and intelligent I/O, and both software and hardware have modularized design, which can provide flexible configuration and plug-and-play.
03
It supports the substation communication standard IEC61850, and the number of SV/GOOSE message receiving ports can be configured.
04
It has high sampling precision and stable performance.
Technical Features
Specifications

Case dimensions

482.6mm×177.0mm×283.0mm(W×H×D)

Normal working temperature

-40℃～70℃

Extreme working temperature

-40℃～85℃

Storage and transportation

-40℃～85℃

Relative humidity

5%～95%

Atmospheric pressure

80kPa～106kPa

DC working power

220V / 110V, allowable deviation: -20％～+15％

Remote signal input

DC110V / DC220V, passive contact input, isolated by   optocoupler

Power consumption of DC power circuit

Under normal operation, the power consumption of   entire device is no more than 30W.

Sampling frequency

Standard 4000Hz (80 points/cycle)

Sampling precision

The voltage channel meets level 0.2.

The protection current channel meets level TPY   (5P40).

The measurement/metering current channel meets level   0.2.

Even-bay sending discreteness

Even-bay sending discreteness is no more than 10µs.

Related solutions
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Intelligent Substation Solution (1000kV and Below)
Intelligent substation is an important part of the intelligent power grid, while the integrated monitoring system is the basis for dispatching control and production management in the intelligent power grid. The PRS-7000 monitoring system of CYG SUNRI meets the requirements of digital information of entire station, network-based communication platform and standard information sharing, and various functions have been realized, such as uniform access, storage and display of station information, operation monitoring, operation and control, comprehensive information analysis and intelligent alarm, operation management and auxiliary applications.