ABB ACS880-01 - Connection of Motor Temperature Sensor to the Drive Via a Relay; Ptc (Iec 60800-5-1); Pt100 (IEC 90800-5-1)

￭ Connection of motor temperature sensor to the drive via a relay
PTC (IEC 60800-5-1)
Class 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).
Temperature sensor insula-
tion requirement
PTC relay
InsulationType
Basic insulationBasic insulation 6 kVExternal relay
Class B. Decisive voltage class B (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 (IEC 90800-5-1)
Class B. Decisive voltage class B (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.
Temperature sensor insula-
tion requirement between
sensor and live parts of mo-
tor
P100 relay
InsulationType
Basic insulationBasic insulation 6 kVExternal relay
88 Guidelines for planning the electrical installation