ABB REF615 Product Guide

ABB 30
Feeder Protection and Control
REF615
Product version: 2.0
1MRS756379 D
Table 36. Three-phase undervoltage protection (PHPTUV)
Operation
accuracy
Depending on the frequency of the voltage measured: f
n
±2Hz
±1.5% of the set value or ±0.002 x U
n
Start time
1) 2)
Minimum Typical Maximum
U
Fault
= 0.9 x set Start value 62 ms 64 ms 66 ms
Reset time < 40 ms
Reset ratio Depends on the set Relative hysteresis
Retardation time < 35 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Operate time accuracy in inverse time mode ±5.0% of the theoretical value or ±20
ms
3)
Suppression of harmonics DFT: -50dB at f = n x f
n
,
where n = 2, 3, 4, 5,…
Table 37. Three-phase undervoltage protection (PHPTUV) main settings
Parameter Function Value (Range) Step
Start value PHPTUV 0.05...1.20 x U
n
0.01
Time multiplier PHPTUV 0.05...15.00 0.05
Operate delay time PHPTUV 60...300000 ms 10
Operating curve type
1)
PHPTUV Definite or inverse time
Curve type: 5, 15, 21, 22, 23
1) Start value = 1.0 x U
n
, Voltage before fault 1.1 x U
n
, f
n
= 50 Hz, undervoltage in one phase-to-phase with nominal
frequence injected from random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
3) Minimum Start value = 0.50, Start value multiples in range of 0.90 to 0.20
1) For further reference please refer to the Operating characteristics table at the end of the Technical data chapter
Table 38. Positive sequence undervoltage protection (PSPTUV)
Operation
accuracy
Depending on the frequency of the voltage measured: f
n
±2Hz
±1.5% of the set value or ±0.002 x U
n
Start time
1) 2)
Minimum Typical Maximum
U
Fault
= 0.99 x set Start value 51 ms 53 ms 54 ms
U
Fault
= 0.9 x set Start value 43 ms 45 ms 46 ms
Reset time < 40 ms
Reset ratio Depends on the set Relative hysteresis
Retardation time < 35 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50dB at f = n x f
n
,
where n = 2, 3, 4, 5,…
1) Start value = 1.0 x U
n
, Positive sequence voltage before fault 1.1 x U
n
, f
n
= 50 Hz, positive sequence undervoltage
with nominal frequence injected from random phase angle, results based on statistical distribution of 1000
measurements
2) Includes the delay of the signal output contact

ABB REF615 Specifications

General

Type	Feeder Protection Relay
Rated Frequency	50/60 Hz
Rated Current	1 A / 5 A
Communication Protocols	IEC 61850, Modbus, DNP3
Mounting	DIN-rail mounting
Operating Temperature Range	-25°C to +55°C
Protection Functions	Overcurrent, Earth-fault, Thermal overload
Inputs	3-phase current, 3-phase voltage
Enclosure	IP54 (front), IP20 (back)