Eaton EMS2 Series - Motor Protection Characteristics

7 Technical data
48 EMS2… Electronic motor starter 10/19 MN034003EN www.eaton.com
Motor protection tripping characteristics
(IEC 60947-4-2)
Class 10 Class 10A
Heat dissipation min / max
0.88 W / 4.1 W 0.88 W / 7 W
Cooling-off time with auto reset after triggering 20 min 20 min
Protection against overvoltage Yes Yes
Allocated protective element on the network side ￫ section 4.1, “Short-circuit protection”,
page 25
￫ section 4.1, “Short-circuit protection”,
page 25
Use in UL environment
￫ section 4.1.2, “Use in UL environment”,
page 26
￫ section 4.1.2, “Use in UL environment”,
page 26
Insulation properties
Rated insulation voltage 500 V 500 V
Rated impulse voltage / insulation 6 kV 4 kV
Insulation properties between the actuating
voltage, control supply voltage and auxiliary circuit
to the main circuit
Operational voltage < 300 V AC
(e. g. 230 / 400V AC, 277 / 480 V AC):
Safe isolation according to IEC/EN 60947-1 and
EN 50178 checks for devices with safety
Operational voltage 300 V AC - 500 V AC:
Basic isolation according to IEC/EN 60947-1
Safe isolation according to EN 50178
Operational voltage < 300 V AC
(e. g. 230 / 400V AC, 277 / 480 V AC):
Safe isolation according to IEC/EN 60947-1 and
EN 50178 checks for devices with safety
Operational voltage 300 V AC - 500 V AC:
Basic isolation according to IEC/EN 60947-1
Safe isolation according to EN 50178
Insulation properties between actuating voltage
and control supply voltage to auxiliary circuits
Safe isolation according to IEC/EN 60947-1 and
EN 50178
Safe isolation according to IEC/EN 60947-1 and
EN 50178
Degree of pollution
2 2
Additional information for devices with safety function, i.e. EMS2-D(R)OS(F)-…-24VDC
System conditions
Database for failure rates SN 29500 –
System type (made up of subsystems) Type B –
Applied standard
IEC 61508 –
Beta factor 2% –
Safe switch off
HFT (hardware fault tolerance) 1
Ambient temperature 40 °C - 60 °C –
MTTF (Mean Time to Failure) 64 years at 40 °C ambient temperature –
MTTF
D
(Mean Time to Failure Dangerous) 175 years at 40 °C ambient temperature –
Shutdown time 200 ms –
λ
sd
– failure rate of detectable safe failures
(sd = safe, detectable)
0 FIT –
λ
su
– failure rate of undetectable safe failures
(su = safe, undetectable)
1134 FIT at 40°C ambient temperature –
λ
dd
– failure rate of detectable dangerous failures
(dd = dangerous, detectable)
647 FIT at 40 °C ambient temperature –
λ
du
– failure rate of undetectable dangerous
failures (du = dangerous, undetectable)
4.2 FIT at 40 °C ambient temperature –
SFF (Safe Failure Fraction)
99.8 % at 40 °C ambient temperature –
DC (Diagnostic Coverage)
99.4 % at 40 °C ambient temperature –
Size/feature
EMS2-…-24VDC EMS2-…-230VAC