ERICO TDS-MOVTEC Surge Diverters - Manual (Page 13)

D I N L I N E I N S T A L L A T I O N I N S T R U C T I O N S
PAGE 13
product into a circuit which features a total
harmonic voltage ratio above 5%.
Model Nominal †Maximum
Voltage Permissible
Abnormal
Over-Voltage
TDS-MT-277 220-277V 480V
TDS-MTU 220-277V 480V
MT275V-135K-A 220-240V 275V
Ensure that the correct voltage rating unit is
installed. Exceeding the nominal rating while
transient events occur may affect product life.
† Note: Other voltage rating Movtecs are available. Refer
to Movtec table for actual ratings.
6. PROTECTION MODES
Movtecs are available in Three Mode and
Single Mode configurations. This refers to how
the internal protection is arranged and
applied to the circuit to be protected.
Three Mode units provide protection between
the Phase-Neutral*, Phase-Earth* and
Neutral-Earth circuit within one Movtec.
Single Mode units provide protection between
two conductors connected to the terminals
marked T1 and T2. These units can be
connected to provide protection from Phase-
Neutral* or Phase-Earth* or Neutral-Earth.
To allow the status indication and alarm
circuitry to operate, a neutral connection is
required for Phase-Earth* configured units,
and a Phase* connection is required for