EasyManuals Logo

ABB REF615 L User Manual

ABB REF615 L
896 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #819 background imageLoading...
Page #819 background image
11.2.1.2 User-programmable inverse-time characteristics
The user can define curves by entering parameters into the following standard
formula:
A060641 V2 EN (Equation 100)
t[s] Operate time (in seconds)
A set
Curve parameter A
B set
Curve parameter B
C set
Curve parameter C
E set
Curve parameter E
I Measured current
I> set
Start value
k set
Time multiplier
11.2.1.3 RI and RD-type inverse-time characteristics
The RI-type simulates the behavior of electromechanical relays. The RD-type is an
earth-fault specific characteristic.
The RI-type is calculated using the formula
t s
k
I
I
[ ]
. .
=
− ×
>












0 339 0 236
A060642 V2 EN (Equation 101)
The RD-type is calculated using the formula
t s
I
k I
[ ] . .= − ×
× >






5 8 1 35 In
A060643 V2 EN (Equation 102)
1YHT530004D05 D Section 11
General function block features
615 series 813
Technical Manual

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the ABB REF615 L and is the answer not in the manual?

ABB REF615 L Specifications

General IconGeneral
TypeFeeder Protection Relay
Rated Frequency50/60 Hz
WeightApprox. 1.5 kg
Communication ProtocolsIEC 61850, Modbus RTU, DNP3
Protection FunctionsOvercurrent, Earth fault, Thermal overload, Under/Over voltage, Under/Over frequency
EnclosureIP20

Related product manuals