![ABB REF630 Product Manual Download Page 60](http://html.mh-extra.com/html/abb/ref630/ref630_product-manual_3179060.webp)
Table 97. 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
Δ
U = 1.1 x set
Voltage change rate
Typical 35 ms (±15
ms)
Δ
U = 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 98. 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
Feeder Protection and Control
1MRS756380 A
REF630
Product version: 1.0
Issued: 15.09.2009
60
ABB
Summary of Contents for REF630
Page 1: ...Relion 630 series Feeder Protection and Control REF630 Product Guide ...
Page 78: ...78 ...
Page 79: ......