Category Archives: Download

ALSTHOM MVAX12B1DA0753A | Trip DC Supply Supervision Relay Midos Draw-out Substation Hardware – Field Service Notes

Component Snapshot At-a-Glance Model: MVAX12B1DA0753A Alt. P/N: MVAX12D1DA0753A (low-burden coil variant, different winding draw); MVAX21/MVAX31 (full trip loop supervision, incompatible wiring logic) Product Series: MVAX Midos draw-out supervision relay family, cross-compatible with MCGG/MVAJ protection rack bases Hardware Type: Electromechanical plug-in trip supply monitoring relay, yellow aluminum withdrawable chassis Key Feature: B-series medium burden 110/125VDC coil,…

ALSTHOM MVAX31C1DF0754A | Midos Trip Circuit Supervision Relay Continuous CB Trip Loop Monitoring 110VDC Draw-out Unit – Field Service Notes

Component Snapshot At-a-Glance Model: MVAX31C1DF0754A Manufacturer: GEC ALSTHOM (later AREVA Grid, now GE Vernova Grid) Alt P/N: MVAX21 (only post-closing supervision, cannot monitor breaker open state); MVAX31S1DC0754A (different coil burden, pinout mismatch); MVAX91 (triple MVAX31 integrated unit, larger rack footprint) Product Series: MVAX Midos trip circuit supervision relay family, unified draw-out rack platform compatible with…

ALSTHOM MCGG22D1CB0753C | Single Phase IDMT Overcurrent Protection Relay Midos Draw-out MV Substation Feeder Motor Backup – Field Service Notes

Component Snapshot At-a-Glance Model: MCGG22D1CB0753C Manufacturer: GEC ALSTHOM (later AREVA, GE Vernova Grid) Alt P/N: MCGG52H1CB0753C (2-phase + earth fault + high-set, incompatible protection logic); MCGG22H (with high-set instantaneous element); MCGG42 (two-phase variant) Product Series: MCGG Midos static numerical protection relay family, draw-out substation rack form factor Hardware Type: Draw-out plug-in single-phase static overcurrent relay,…

ALSTHOM MVAJ13D1GB0780A | Midos Low-Burden DC Tripping Auxiliary Relay MV Substation Protection Interlock – Field Service Notes

Component Snapshot At-a-Glance Model: MVAJ13D1GB0780A Manufacturer: GEC ALSTHOM (later AREVA, GE Vernova Grid) Alt P/N: MVAJ13B1GB0780A (High-burden coil variant, incompatible coil impedance); MVAJ23 series (larger multi-contact frame, cannot direct swap) Product Series: MVAJ13 compact hinged armature tripping relay, Midos standard draw-out rack form factor Hardware Type: Draw-out plug-in electromechanical auxiliary trip relay, transparent front protective…

ALSTHOM MVAJ23B1AB0757B | MVAJ23 High Burden Draw-out Trip Relay MV Substation Circuit Breaker Interlock – Field Service Notes

Component Snapshot At-a-Glance Model: MVAJ23B1AB0757B Manufacturer: GEC ALSTHOM (later AREVA, now GE Vernova Grid) Alt P/N: MVAJ23R1AB0505F (low burden coil variant, coil impedance incompatible); MVAJ10 series (smaller contact count, cannot substitute multi-interlock schemes) Product Series: MVAJ 20-series hinged armature trip/auxiliary relay, Midos draw-out rack form factor Hardware Type: Draw-out plug-in mechanical tripping lockout relay, yellow…

ALSTHOM MCGG52H1CB0753C | MCGG52 Series IDMT Overcurrent & Earth Fault Protection Relay Power Plant Feeder Motor Protection – Field Service Notes

Component Snapshot At-a-Glance Model: MCGG52H1CB0753C Manufacturer: GEC ALSTHOM (Later acquired by Schneider Electric) Alt P/N: MCGG22D1CB0753C (Low-set only, no instantaneous high-set); MCGG62N1CB0753F (Extended curve variant, pinout incompatible) Product Series: MCGG (Microprocessor Controlled Generalized Gear) numerical protection relay series Hardware Type: Draw-out rack-mount numerical overcurrent & earth fault protection relay, full withdrawable plug-in chassis Key Feature:…

ABB DSAI130D 3BSE006513R1 | 8CH Isolated 4-20mA Analog Input Module S800 I/O AC800M 800xA – Field Service Notes

Component Snapshot At-a-Glance Model: DSAI130D, factory P/N 3BSE006513R1 Alt. P/N: DSAI130 (non-HART older revision, limited diagnostic capability); DSAI143 (16-channel non-isolated AI, cannot substitute) Product Series: ABB S800 I/O, AC 800M / 800xA DCS & SIL capable SIS auxiliary monitoring Hardware Type: Hot-swappable rack plug-in 8-channel analog input module, mates with S800 TU830/TU831 terminal baseplates Key…

ABB DSDI110AV1 3BSE018295R1 | 16CH Wetting Voltage Digital Input Module S800 I/O AC800M 800xA – Field Service Notes

Component Snapshot At-a-Glance Model: DSDI110AV1, factory P/N 3BSE018295R1 Alt. P/N: DSDI110V1 (no internal wetting supply, external 24V required); DSDI110A (Advant S100 legacy 32CH DI, rack/backplane incompatible) Product Series: ABB S800 I/O, AC 800M / 800xA DCS & SIS control system Hardware Type: Rack plug-in 16-channel wetting digital input module, hot-swap compatible with S800 I/O unit…

ABB DSQC355A | Robot Serial Measurement Board SMB Unit For IRC5 Controller – Field Service Notes

Component Snapshot At-a-Glance Model: DSQC355A Alt. P/N: DSQC355 (older non-A revision, pinout partial mismatch; DSQC355B upgraded version with improved EMI filtering) Product Series: ABB IRC5 Robot Controller, Serial Measurement Bus (SMB) architecture Hardware Type: Rack-mount SMB serial measurement board, hot-swap compatible inside IRC5 main cabinet Key Feature: Reads absolute serial encoder data from robot servo…

ABB SK827005 | 480V 60Hz AC Contactor Magnet Coil For EH550 Power Contactor – Field Service Notes

Component Snapshot At-a-Glance Model: SK827005 Alt. P/N: SK827100-AS (24VDC DC coil variant, pinout incompatible); SK827004 (400VAC coil, voltage mismatch) Product Series: ABB EH550 high-power AC contactor, generator excitation & MCC power switching equipment Hardware Type: Molded insulated AC operating magnet coil, plug-in direct replacement for EH550 contactor core Key Feature: Factory integrated surge suppression circuit,…