CYG SUNRI CO., LTD.

PRS-7393 Merging unit

Overview/Introduction/Application Technical Features/Advantages Technical Specifications/Sub-models Related Solutions

PRS-7393 Merging unit

Product description

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.

Scope of application

It is applicable to intelligent substations of various voltage levels.

Technical features/advantages

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.

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.

It supports the substation communication standard IEC61850, and the number of SV/GOOSE message receiving ports can be configured.

It has high sampling precision and stable performance.

Specifications/Submodels

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.