Specifications For Insulation Tests, Protection Class, Degree Of Protection, And Rated Voltage - Siemens ET 200pro Operating Instructions Manual

10.5 Specifications for insulation tests, protection class, degree of protection, and rated voltage

10.5 Specifications for insulation tests, protection class, degree of
protection, and rated voltage
Test voltage
The proof of dielectric strength is provided in a type test with the following test voltage
according to IEC 61131-2:
Circuits with rated voltage V
Pollution degree/overvoltage category according to IEC 61131-2
● Pollution degree 2
● Overvoltage category
Degree of protection IP65
Degree of protection according to IEC 60529
● Protection against the ingress of dust and full touch protection
● Water projected by a nozzle against the enclosure from any direction shall have no
Degrees of protection IP66 and IP67
Degree of protection according to IEC 60529
● Protection against the ingress of dust and full touch protection
● IP66: Water from heavy seas or water projected in powerful jets shall not enter the
● IP67: Protection against water when enclosure is immersed at specified pressures over a
Rated voltage for operation
The ET 200pro distributed I/O system operates at the following rated voltage and
corresponding tolerance.
Rated voltage
24 V DC
ET 200pro distributed I/O system
Operating Instructions, 03/2013, A5E00335544-08
– At V = 24 V DC: II
r
harmful effect.
enclosure in harmful quantities.
specified time period (water must not enter the enclosure in any harmful amount)
against other circuits or ground.
e
< 50 V
< 150 V
< 250 V
Tolerance range
20.4 V DC to 28.8 V DC
General technical data
Test voltage
500 V DC
2500 V DC
4000 V DC
247