Solutions   for   Protecting   andManaging   the   Electrical   Network

DMS   7000

Digital differential protection relay

DMS 7000 series relays are designed to provide differential protection to two winding transformers, rotating machines (motors or generators) as well as generator-transformer or motor transformer units connected to 50/60 Hz three phase electrical networks.

The DMS 7000 series is made up of two families:

  • DMS7001: designed for the protection of synchronous or asynchronous generators or motors
  • DMS7002: designed for the protection of two winding transformers and generator-transformer or motor-transformer units.

PROTECTION   Functions

  • Differential Protection [87]


  • 5 programmable output units
  • 2 digital inputs (T and V)
  • Configuration and parameter setting by local MMI or LAMSTEL software
  • Disturbance Recorder and Event Recording functionalities
  • Communication by Modbus®
  • Watchdog Unit


  Device Doc. Type Lang. Ref. Index
DMS 7000 Leaflet EN -- --
DMS 7001 User Manual EN M.1826/A.XE 02/99
DMS 7001 User Manual IT MU304-2 B
DMS 7001 Connection/Definition Diagram -- 28A6 B
DMS 7002 User Manual EN M.1826/AA.XE 06/97
DMS 7002 User Manual IT MU.1826 B
DMS 7002 Connection/Definition Diagram -- 28A8 B