CYG SUNRI CO., LTD.

PRS-7789 smart terminal

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

PRS-7789 smart terminal

Product Description

The PRS-7789 smart terminal is a smart terminal device fully supporting digital substations. It provides digital interfaces for traditional circuit breakers and has the function of a local operation box. It can be used as an intelligent accessory for traditional circuit breakers. The PRS-7789 smart terminal receives the controlcommand from associated bay layer equipment through the optical fiber GOOSE network or point-to-point optical fiber connection, completes the operation of circuit breaker, and collects the relevant state signals of the circuit breaker and sends it to the bay layer equipment through the optical fiber.

Scope of application

It isapplicable to circuit breakers and busbar disconnector inintelligent 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 can receive the GOOSE command of protection tripping and closing, manual closing/manual opening of measurement and control, as well as knife switch and grounding knife switch control, and output corresponding action contacts.

It can collect and upload the positions of switch, knife switch and grounding knife switch, and other signals through GOOSE communication.

The device can adapt to various tripping and closing action currents, which has the function of current self-retaining.

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
Power consumption of DC power circuit	Under tripping action, the power consumption of entire device is no more than 40W.
Tripping action time	The tripping action time is no more than 5ms
Input response time	The input response time (not including the anti-shake time) should be no more than 5ms.