ABB REG670 Product Manual page 67

Generator protection REG670 2.2 and Injection equipment REX060,
REX061, REX062
Product version: 2.2.1
Table 49. STTIPHIZ technical data
Function
Fault resistance sensitivity
Injection frequency
Injection voltage
Trip limit of fault resistance
Alarm limit of fault resistance
Operate time, start at R ~ 0Ω and filter length
f
= 1 s
Operate time, trip at R ~ 0Ω and filter length =
f
1 s
Alarm time delay at R ~ 0Ω and filter length =
f
1 s
Table 50. Underimpedance protection for generators and transformers ZGVPDIS
Function
Number of zones
Forward reach
Reverse reach
Impedance angle
Reset ratio
Start time at 1.2 x set impedance to 0.8 x set
impedance
Independent time delay to operate at 1.2 x set
impedance to 0.8 x set impedance
ABB
GUID-956187E5-A466-47BF-B671-F46548A5DF2E v3
Range or value
Can be reached at steady state
operating condition of the machine
Typically
(50.000 - 250.000) Hz
240 V
(100 - 10000)Ω
(100 - 100000)Ω
1.00 s typically
3.00 s typically
(0.00 - 600.00) s
GUID-E8104D00-3183-4F55-89F9-A74B14BFE6FE v7
Range or value
3
(3.0 - 200.0)% of Z
r
where Z =UBase/√3∗IBase
r
(3.0 - 200.0)% of Z
r
where Z =UBase/√3∗IBase
r
(5 - 90) degrees
105% typically
Min. = 15 ms
Max. = 35 ms
(0.000 – 60.000) s
Accuracy
50 kΩ
10 kΩ
±0.1 Hz
±5% of 1 kΩ at R ≤ 1 kΩ
f
±10% of set value at R > 1 kΩ
f
±5% of 1 kΩ at R ≤ 1 kΩ
f
±10% of 10 kΩ at 1 kΩ < R ≤ 10 kΩ
f
±50% of set value at R > 10 kΩ
f
-
-
±0.2% or ± 2.00 s whichever is greater
Accuracy
±5.0% of set impedance
Conditions:
Voltage range: (0.1 - 1.1) x U
Current range: (0.5 - 30) x I
±5.0% of set impedance
Conditions:
Voltage range: (0.1 - 1.1) x U
Current range: (0.5 - 30) x I
±0.2% or ±40 ms whichever is greater
1MRK 502 074-BEN A
-
r
r
r
r
-
-
-
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