Technical Description; Functional Description; Product Functions; Protection Functions - ABB REF 610 Technical Reference Manual

1MRS 755535
4.
4.1.
4.1.1.
4.1.1.1.
4.1.1.2.
Feeder Protection Relay
Technical Reference Manual - ANSI Version

Technical description

Functional description

Product functions

Protection functions

The protection functions of REF 610 with their IEC symbols and IEEE device
numbers are presented in the table below:
Table 4.1.1.1-1 IEC symbols and IEEE device numbers
Function description
Three-phase non-directional overcurrent protection,
low-set element
Three-phase non-directional overcurrent protection,
high-set element
Three-phase non-directional overcurrent protection,
instantaneous element
Phase discontinuity protection
Three-phase thermal overload protection for cables
Non-directional ground-fault protection, low-set element I
Non-directional ground-fault protection, high-set
element
Arc protection
Circuit-breaker failure protection
Automatic reclosing
Lockout relay
For descriptions of the protection functions, refer to sections:
• 4.1.4.2. Overcurrent protection
• 4.1.4.3. Ground-fault protection
• 4.1.4.4. Thermal protection for cables
• 4.1.4.5. Phase discontinuity protection
• 4.1.4.6. Circuit-breaker failure protection
• 4.1.4.7. Arc protection
• 4.1.4.8. Auto-reclose function

Inputs

REF 610 is provided with four energizing inputs, two optional light sensor inputs,
two digital inputs and three optional digital inputs controlled by an external voltage.
Three of the energizing inputs are for the phase currents and one for the ground-fault
current. For details, refer to section Input/output connections and tables 4.1.4.10-7,
4.2.1-1 and 4.2.1-5. The functions of the digital inputs are determined with the
SGB switches.
REF 610
IEEE Device
IEC symbol
No.
I> 51P
I>> 50P-1
I>>> 50P-2
ΔI>
46
θ>
49
> 51N
0
I >> 50N
0
ARC ARC
CBFP CBFAIL
0→1 79
86
13