ABB ACS880-37LC Hardware Manual page 77

relay (plus code option for a cabinet-installed drive), and the insulation requirement for the
sensor.
Type
External relay
Drive options +L505 and +L513
PTC alternative B: Decisive voltage class B of IEC 60800-5-1 (basic insulation) is provided
with a 6 kV relay. Circuits connected to all motor protection relay inputs and outputs must
be protected against direct contact.
Pt100 alternative A: This table shows the insulation requirement for a customer's external
relay, and the insulation requirement for the sensor to fulfill decisive voltage class A (double
insulation) of IEC 60800-5-1.The table also shows the insulation of the factory-installed
relay (plus code option for a cabinet-installed drive), and the insulation requirement for the
sensor.
Type
External relay
Drive options +L506 and +L514
Pt100 alternative B: Decisive voltage class B of IEC 60800-5-1 (basic insulation) can be
achieved when there is basic insulation between the sensor and live parts of the motor.
Circuits connected to all motor protection relay inputs and outputs must be protected against
direct contact.
Guidelines for planning the electrical installation 77
PTC relay
Insulation
Basic insulation 6 kV
Basic insulation 6 kV
Pt100 relay
Insulation
Basic insulation 6 kV
Basic insulation < 6 kV
Temperature sensor insulation
requirement
Basic insulation
Basic insulation
Temperature sensor insulation
requirement
Basic insulation
Double or reinforced insulation