8
Operation
Permitted duty types
Operating Instructions – Explosion-Protected MOVI-SWITCH
®
Drives
38
8.2
Permitted duty types
8.2.1
Permitted duty types and protection concept for category 3 motors
Design
Duty types
on nameplate
Addi-
tional
name-
plate
Permitted
duty types
Protection
against
excessive heating
Identification on
the nameplate
3G
3D
3GD
S1
–
Line operation:
S1
Motor circuit breaker
1)
–
S1
Line operation:
Switching
operation, soft
starter, heavy
starting
PTC thermistor
/TF
2)
Option
designation /TF
2)
S1
VFC
Line operation:
S1
Motor circuit breaker
1)
–
S1
VFC
Line operation:
S1
Optional PTC
thermistor /TF
2)
Option
designation /TF
2)
S1
VFC
Line operation:
Switching
operation, soft
starter, heavy
starting
PTC thermistor /TF
2)
Option
designation /TF
2)
S1
VFC
Inverter opera-
tion, group drive
(only for 3D)
PTC thermistor /TF
2)
Additional nameplate:
Permitted continuous
currents listed depen-
ding on the frequency
1) Monitoring device for protecting explosion-protected drives (e.g. Directive 2014/34/EU).
2) The catalog designation for PTC thermistors is /TF. Monitoring of the PTC thermistor by a thermistor "monitoring device for protect-
ing explosion-protected drives" (e.g. Directive 2014/34/EU).
INFORMATION
All motors must be protected from impermissible heating according to ATEX Directive
2014/34/EU. Safety equipment required for safe operation is affected by this Directive
and must be certified for this reason.
25988670/EN – 04/2020
