ABB Relion REQ650, Product Manual

Page: 65 / 91

Voltage protection
Table 36. Two step undervoltage protection UV2PTUV (27)
Function Range or value Accuracy
Operate voltage, low and high
step (1–100)% of VBase ± 0.5% of V
n
Reset ratio <105% -
Inverse time characteristics for
low and high step, see table
73
- See table 73
Definite time delay, step 1 (0.00 - 6000.00) s ± 0.5% ± 25 ms
Definite time delays, step 2 (0.000-60.000) s ± 0.5% ±25 ms
Minimum operate time, inverse
characteristics (0.000–60.000) s ± 0.5% ± 25 ms
Operate time, pickup function 30 ms typically at 2 to 0.5 x V
set
-
Reset time, pickup function 40 ms typically at 0.5 to 2 x V
set
-
Critical impulse time 10 ms typically at 2 to 0 x V
set
-
Impulse margin time 15 ms typically -
Breaker protection REQ650 ANSI 1MRK 505 269-BUS -
Product version: 1.1 Issued: April 2011
ABB 65