ABB RELION 670 SERIES REG670, Руководство по эксплуатации продукта

Страница: 74 / 134

SEMOD166919-2 v6
Table 68. Voltage differential protection VDCPTOV
Function Range or value Accuracy
Voltage difference for alarm and
trip (2.0–100.0) % of
UBase
±0.5% of U
r
Under voltage level (1.0–100.0) % of
UBase
±0.5% of U
r
Independent time delay for
voltage differential alarm at 0.8 to
1.2 x UDAlarm (0.000–60.000)s ±0.2% or ±40 ms whichever is greater
Independent time delay for
voltage differential trip at 0.8 to
1.2 x UDTrip (0.000–60.000)s ±0.2% or ±40 ms whichever is greater
Independent time delay for
voltage differential reset at 1.2 to
0.8 x UDTrip (0.000–60.000)s ±0.2% or ±40 ms whichever is greater
SEMOD175168-2 v7
Table 69. 100% Stator E/F 3rd harmonic STEFPHIZ
Function Range or value Accuracy
Fundamental frequency level UN
(95% Stator EF) (1.0–50.0)% of
UBase
±0.25% of U
r
Third harmonic differential level (0.5–10.0)% of UBase ±0.25% of U
r
Third harmonic differential block
level (0.1–10.0)% of
UBase
±0.25% of U
r
Independent time delay to
operate for fundamental UN >
protection at 0 to 1.2 x UNFund> (0.020–60.000) s ±0.2% or ±40 ms whichever is greater
Independent time delay to
operate for 3rd harm-based
protection at 0 to 5 x UN3rdH< (0.020–60.000) s ±0.2% or ±40 ms whichever is greater
Filter characteristic:
Fundamental
Third harmonic
Reject third harmonic by 1–40
Reject fundamental harmonic by
1–40 -
1MRK 502 068-BEN D
Generator protection REG670 2.1 IEC
Product version: 2.1
74 ABB