SR750-P5-G5-S5-LO-A20-R-T SR 750/760 protection relay

Description

Traditionally, retrofitting or upgrading an existing relay has been a challenging and time consuming task often requiring re-engineering, panel modifications, and re-wiring. The Multilin 8 Series Retrofit Kit provides a quick, 3-step solution to upgrade previously installed Multilin SR 750/760 protection relays, reducing upgrade costs. With the new 8 Series Retrofit Kit, users are able to install a new 850 Feeder Management System without modifying existing panel or switchgear cutouts, re-wiring, or need for drawing changes and re-engineering time and cost. With this three-step process, operators are able to upgrade existing SR relays in as fast as 21 minutes, simplifying maintenance procedures and reducing system downtime.

EnerVista™ Launchpad is a powerful software package that provides users with all of the setup and support tools needed for configuring and maintaining Multilin products. The setup software within Launchpad allows configuring devices in real-time by using serial, Ethernet, or modem connections, or offline by creating setting files to be sent to devices at a later time. Included in Launchpad is a document archiving and management system that ensures critical documentation is up-to-date and available when needed.

Documents made available include:

• Manuals • Application Notes

• Guideform Specifications

• Brochures

• Wiring Diagrams

• FAQ’s

• Service Bulletins

Thermocouple is a temperature sensor that we often use in daily life. However, some users have certain doubts about whether the cold end temperature compensation wire of the thermocouple is connected to the DCS when using it. If there is no temperature transmitter in the middle and the DCS card is a thermocouple, then the compensation wire must be connected to the card; If there is a temperature transmitter, then the compensation wire is connected to the temperature transmitter, and the signal from the temperature transmitter to DCS is 4-20mA. To help everyone better understand and utilize, this article will introduce two methods for connecting thermocouples to DCS:

1. Thermocouples use compensating wires, with nodes in the middle, but corresponding compensating cables must be used to directly connect to the DCS thermocouple module, such as the LLMUX card in HONEYWELLTPS. Minimize nodes as much as possible to reduce interference. In addition, the corresponding thermocouple model and compensation method need to be selected in the DCS configuration.

2. Thermocouples use transmitters (temperature transmitters) on site to convert into 4-20mA standard signals, which are then connected to indoor safety barriers (if necessary, such as in chemical environments), and then connected to standard analog quantity cards (ordinary AI cards) in DCS. Pay attention to the use of compensation cables between the thermocouple and the transmitter. The transmitter needs to set the compensation method, thermocouple model, calibration range, etc. DCS needs to set the range, signal type, etc.