Siemens 7SR105 Rho - Page 87

7SR105 Rho Performance Specification
© 2018 Siemens Protection Devices Chapter 3 Page 11 of 17
Insulation Resistance
IEC/EN 60255-27: Edition 2:
2013-10
Test voltage: 500 V DC
> 100 M ohm
Test duration: > 5 s
Protective Bonding
Resistance
IEC/EN 60255-27: Edition 2:
2013-10
Test voltage: < 12 V
AC/DC
< 0.1 Ohm
Test duration: 1 min
Bonding resistance
Protective Bonding
Continuity
IEC/EN 60255-27: Edition 2:
2013-10
Accessible conductive
parts should be bonded
with the protective
conductor terminal
Low current
continuity test
Flammability of
Insulating Materials,
Components and Fire
enclosures
IEC/EN 60255-27: Edition 2:
2013-10
Structure Part
Standard for
insulating material
of flammability
class
Terminals Class UL 94 V-0
Terminal Mounting Class UL 94 V-0
Wiring (CT) (N)2GFAF (VDE)
Components mounting Class UL 94 V-0
Enclosure Class UL 94 V-0
PCB Class UL 94 V-0
LCD Class UL 94 V-0
Single Fault Condition
IEC/EN 60255-27: Edition 2:
2013-10
Assessment of:
• Insulation between
circuits and parts
• Compliance with
requirements for
protection against the
spread of fire
• Overloads
• Intermittently rated
resistors
• Compliance with
requirements for
mechanical protection
The equipment
shall not present
a risk of electric
shock or fire after
a single-fault test.
Marking and
Documentation
IEC 61010-1: 2010 Clause No. 5 -
Protection against
electric shock
Clause No. 6
-
Protection against
mechanical hazard
Clause No. 7
-