ABB RET630 - Fuse Failure Supervision; Station Battery Supervision

Table 80. Fuse failure supervision (SEQRFUF)
Characteristic Value
Operation accuracy At the frequency f = f
n
Current: ±1.5% of the set value or ±0.002 × I
n
Voltage: ±1.5% of the set value or ±0.002 × U
n
Operate time
1)
• NPS function
U
Fault
= 1.1 x set Neg
Seq voltage Lev
Typical 35 ms (±15
ms)
U
Fault
= 5.0 x set Neg
Seq voltage Lev
Typical 25 ms (±15
ms)
• Delta function
ΔU = 1.1 x set
Voltage change rate
Typical 35 ms (±15
ms)
ΔU = 2.0 x set
Voltage change rate
Typical 28 ms (±15
ms)
1) Includes the delay of the signal output contact, f
n
= 50 Hz, fault voltage with nominal frequency injected from
random phase angle
Table 81. Station battery supervision (SPVNZBAT)
Characteristic
Value
Operation accuracy ±1.0% of the set value
Operate time accuracy ±1.0% of the set value or ±40 ms
Transformer Protection and Control 1MRS756788 A
RET630
Product version: 1.0 Issued: 15.09.2009
50 ABB