Load centers 100-225 ampere single- and three-phase 10-42 circuit indoor type (4 pages)
Summary of Contents for GE Multilin 8 Series
Page 1
Grid Solutions Multilin 8 Series 745 to 845 Retrofit Kit Instruction Manual 8 Series version: 2.9x GE publication code: 1601-0726-A1 *1601-0701-...
Page 2
Part number: 1601-0726-A1 (April 2023) Disclaimer It is the responsibility of the user to verify and validate the suitability of all GE Grid Automation products. This equipment must be used within its design limits. The proper application including the configuration and setting of this product to suit the power system assets is the responsibility of the user, who is also required to ensure that all local or regional safety guidelines are adhered to.
Page 3
For further assistance For current manuals and software go to: Website: http://www.gegridsolutions.com/multilin/ProductListing.htm For product support, please use the following contact information: GE Grid Solutions 650 Markland Street Markham, Ontario Canada L6C 0M1 Worldwide telephone: +1 905 927 7070 Europe/Middle East/Africa telephone: +34 94 485 88 54...
Page 4
Safety words and definitions The following symbols used in this document indicate the following conditions: Indicates a hazardous situation which, if not avoided, will result in death or serious Note injury. Indicates a hazardous situation which, if not avoided, could result in death or serious Note injury.
Page 5
Ensure that all ground paths are un-compromised for safety purposes during device operation and service. All recommended equipment that should be grounded and must have a reliable and un-compromised grounding path for safety purposes, protection against electromagnetic interference and proper device operation. Equipment grounds should be bonded together and connected to the facility’s main ground system for primary power.
Page 7
Table of Contents 1: OVERVIEW INTRODUCTION ..........................1 ORDERING ............................2 2: CONVERTING DOWNLOADING & SAVING A 745 SETPOINT FILE ............. 3 SETTINGS FILES CONVERTING A SAVED 745 SETPOINT FILE ................. 4 CONVERSION REPORT ........................5 LOADING SETPOINTS FROM A FILE ..................6 3: REMOVING THE UNINSTALL THE 745 RELAY ......................
Page 9
Grid Solutions Multilin 745 to 845 Retrofit Kit Chapter 1: Overview Overview Introduction 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 745 to 845 Retrofit Kit provides a quick 3-step solution to upgrade previously installed Multilin relays, reducing upgrade costs and minimizing effort.
Page 10
• A HI-voltage AC Power Supply with less than 88 V AC • A LO-voltage AC Power Supply • RS422 communications If you require any of the features listed above, contact GE Grid Solution directly to discuss your options. www.gegridsolutions.com/multilin/contact.htm?loc=3 Enter your existing SR 745 order code, and click Order Upgrade.
Page 11
Grid Solutions Multilin 745 to 845 Retrofit Kit Chapter 2: Converting Settings Files Converting Settings Files Before any mechanical or electrical changes are made, the settings file from the Multilin 745 relay must be backed up. The existing settings file can then be converted to an 8 Series settings file.
Page 12
Install and start the latest version of the EnerVista 8 Series Setup software (available from the GE Website). (See the 845 Instruction Manual for more information.) In the Offline pane, right click and select the New Settings File item. The following box appears, allowing for the configuration of the setpoint file for the correct firmware version and relay order code.
Page 13
CHAPTER 2: CONVERTING SETTINGS FILES CONVERSION REPORT To select an existing 745 file, click the button beside the Initialize Settings from SR Settings File box and navigate to the file. Click OK to complete the process. Once this step is completed, the new file, with a complete path, is added to the 845 software environment.
Page 14
LOADING SETPOINTS FROM A FILE CHAPTER 2: CONVERTING SETTINGS FILES Loading Setpoints from a File Once the converted settings file has been thoroughly reviewed, and the new 845 Relay installed, the settings file can be uploaded to the 845 Relay. An error message occurs when attempting to upload a setpoint file with a revision number that does not match the relay firmware.
Page 15
Grid Solutions Multilin 745 to 845 Retrofit Kit Chapter 3: Removing the Existing Relay Removing the Existing Relay Uninstall the 745 Relay Always be sure to follow your company's safety policies and procedures during the retrofit Note process. Wear appropriate personal protective equipment for hand and eye protection. Note Turn off control power before drawing out or re-inserting the relay to prevent Note...
Page 16
UNINSTALL THE 745 RELAY CHAPTER 3: REMOVING THE EXISTING RELAY Use a Phillips screwdriver or a sharp prying tool to pry open the metal sides of the case around the terminal blocks. Use pliers to further pry open the case. This will loosen the terminal blocks from the case.
Page 17
Grid Solutions Multilin 745 to 845 Retrofit Kit Chapter 4: Installing the 8 Series Relay Installing the 8 Series Relay The following sections show the mechanical installation of the Multilin 745 to 845 Retrofit Kit. MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 18
DIMENSIONS CHAPTER 4: INSTALLING THE 8 SERIES RELAY Dimensions The dimensions (in inches) of the Multilin 745 to 845 Retrofit Kit are shown, followed by additional dimensions for mounting and panel cutouts. Figure 4-1: Overall Dimensions - Top View MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 19
CHAPTER 4: INSTALLING THE 8 SERIES RELAY DIMENSIONS 8.68 10.35 Figure 4-2: Overall Dimensions - Back View MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 20
DIMENSIONS CHAPTER 4: INSTALLING THE 8 SERIES RELAY Figure 4-3: Overall Dimensions - Side View MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 21
CHAPTER 4: INSTALLING THE 8 SERIES RELAY DIMENSIONS Figure 4-4: Cutout Dimensions MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 22
DIMENSIONS CHAPTER 4: INSTALLING THE 8 SERIES RELAY Figure 4-5: Drill Guide Template MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 23
CHAPTER 4: INSTALLING THE 8 SERIES RELAY MOUNTING THE 845 RETROFIT KIT Mounting the 845 Retrofit Kit With the retrofit kit, the draw-out and insertion mechanism remains the same. The depth of the new terminal blocks is a close match to the depth of the 745 terminal blocks due to the depth reduction collar included in the Retrofit Kit.
Page 24
MOUNTING THE 845 RETROFIT KIT CHAPTER 4: INSTALLING THE 8 SERIES RELAY Insert the new 845 relay inside the newly mounted Retrofit Kit case. Step 6 Step 5 MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 25
Grid Solutions Multilin 745 to 845 Retrofit Kit Chapter 5: Electrical Installation Electrical Installation This chapter shows the electrical wiring diagram translations from Multilin 745 relays to Multilin 845 relays. For complete wiring diagrams for each relay, refer to the appropriate product Instruction Manual available on our website: www.gegridsolutions.com/multilin N/R = Not Required...
Page 26
CHAPTER 5: ELECTRICAL INSTALLATION BASIC COMMS COMMS S COMMS C PORT 4 PORT 4 PORT 5 PORT 5 PORT 1 BANK - J1 BANK - K1 BANK - J2 BANK - K2 AC ANALOG INPUTS Figure 5-1: Rear Terminal Layout of the 8 Series Platform MULTILIN 745 TO 845 RETROFIT KIT –...
Page 27
CHAPTER 5: ELECTRICAL INSTALLATION Figure 5-2: Rear Terminal Layout of the 745-845 Retrofit Kit MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 28
CHAPTER 5: ELECTRICAL INSTALLATION Figure 5-3: Typical Wiring for a 2-Winding Transformer with VTs on HV Side MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 29
CHAPTER 5: ELECTRICAL INSTALLATION Figure 5-4: Typical Wiring for a 3-Winding Transformer MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 30
745 TO 845 EQUIVALENT TERMINAL BLOCK MAPPINGS CHAPTER 5: ELECTRICAL INSTALLATION 745 to 845 Equivalent Terminal Block Mappings Table 5–1: 745 Terminal Blocks ANALOG ANALOG ANALOG ANALOG ANALOG ANALOG ANALOG ANALOG OUT ANALOG OUT ANALOG OUT INPUT + INPUT - POSITION + POSITION - OUT COM...
Page 31
CHAPTER 5: ELECTRICAL INSTALLATION 745 TO 845 SLOTS J&K: CT/VT CONNECTIONS 745 to 845 SLOTS J&K: CT/VT Connections Figure 5-5: 745 and 845 CT Wiring - Two-Winding Transformer MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 32
745 TO 845 SLOTS J&K: CT/VT CONNECTIONS CHAPTER 5: ELECTRICAL INSTALLATION Figure 5-6: 745 and 845 CT Wiring - Three-Winding Transformer Table 5–3: VT Connections Type System Connection Voltages VT Input any winding, any phase Voltages VT Return any winding, any phase Set 845 SYSTEM >...
Page 33
CHAPTER 5: ELECTRICAL INSTALLATION 745 TO 845 SLOTS J&K: CT/VT CONNECTIONS Table 5–4: CT Connections Type System Connection Winding 1 - Phase A Winding 1 - Phase A RETURN Winding 1 - Phase B Winding 1 - Phase B RETURN Winding 1 - Phase C ...
Page 34
745 TO 845 SLOTS J&K: CT/VT CONNECTIONS CHAPTER 5: ELECTRICAL INSTALLATION Phase A Phase B Phase C WYE VT CONNECTION J14 J15 VOLTAGE INPUTS Figure 5-7: 745 and 845 VT Connections MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 35
CHAPTER 5: ELECTRICAL INSTALLATION 745 TO 845 SLOT A: CONTROL POWER AND GROUNDING 745 to 845 Slot A: Control Power and Grounding Figure 5-8: Control Power and Grounding Table 5–5: Control Power and Grounding Type Function Power Supply Plus Power Supply Negative Power Supply Ground...
Page 36
745 TO 845 SLOT F, H CHAPTER 5: ELECTRICAL INSTALLATION 745 to 845 Slot F, H 5.4.1 HV I/O - Contact Outputs Figure 5-9: 745-845 Contact Output Mapping Trip and close coil supervision is not available. Note MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 37
CHAPTER 5: ELECTRICAL INSTALLATION 745 TO 845 SLOT F, H Table 5–6: Contact Outputs 745 Function 845 Function Output 1: solid state trip (+) Auxiliary 12 NO Output 1: solid state trip (-) Auxiliary 12 Common Output 2: trip relay (NO) Auxiliary 1 NO Output 2: trip relay (common) Auxiliary 1 Common...
Page 39
CHAPTER 5: ELECTRICAL INSTALLATION 745 TO 845 SLOT F, H Table 5–7: Contact Inputs System Connection Logic Power Out (Dry) (+) F21, H21 Logic Power Out (Wet) (COM) F20, H20 Setpoint Access (+) Not supported - see Note Setpoint Access (-) Not supported - see Note •...
Page 40
745 TO 845 LOW VOLTAGE ANALOG I/O, TAP POSITION INPUT, RTD INPUT CHAPTER 5: ELECTRICAL INSTALLATION 745 to 845 Low Voltage Analog I/O, Tap Position Input, RTD Input Figure 5-11: 745-845 Low Voltage Analog I/O, Tap Position Input, RTD Input Mapping Table 5–8: Low Voltage Inputs and Outputs Type System Connection...
Page 41
CHAPTER 5: ELECTRICAL INSTALLATION 745 TO 845 LOW VOLTAGE ANALOG I/O, TAP POSITION INPUT, RTD INPUT Figure 5-12: 745-845 Communications Table 5–9: Communications System Connection Computer RS485 (+) / RS422 (Rx+) Computer RS485 (-) / RS422 (Rx-) Computer RS485/RS422 (common) RS422 (Tx+) Not supported RS422 (Tx-)
Page 42
745 TO 845 LOW VOLTAGE ANALOG I/O, TAP POSITION INPUT, RTD INPUT CHAPTER 5: ELECTRICAL INSTALLATION MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Page 43
This Appendix includes the warranty and revision history. Warranty For products shipped as of 1 October 2013, GE warrants most of its GE manufactured products for 10 years. For warranty details including any limitations and disclaimers, see our Terms and Conditions at https://www.gegridsolutions.com/multilin/warranty.htm...
Page 44
REVISION HISTORY CHAPTER A: WARRANTY AND REVISION HISTORY MULTILIN 745 TO 845 RETROFIT KIT – INSTRUCTION MANUAL...
Need help?
Do you have a question about the Multilin 8 Series and is the answer not in the manual?
Questions and answers