REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
1VTA100004-en DMS,2001-10-04
REF542
plus
: Installation and Commissioning
62 / 80
10 Type Test
10.1 Protection Function
All relevant tests according to the standard IEC 60255.
ANSI Code
Protection Function and the Setting Parameters
Test Procedure
68
Inrush stabilization (Only in connection with I>> and I>)
N = 2.0 … 8.0
M = 3.0 … 4.0
Time = 220 … 100.000 ms
IEC 60255-3
67 Overcurrent
directional
high
I>> = 0,05 ... 40 In
t = 70 ... 300.000 ms
IEC 60255-12
67 Overcurrent
directional
low
I > = 0,05 ... 40 In
t = 220 ... 300.000 ms
IEC 60255-12
50 Overcurrent
instantaneous
I>>> = 0,10 ... 40 In
t = 15 ... 300.000 ms
IEC 60255-3
51 Overcurrent
high
I>> = 0,05 ... 40 In
t = 40 ... 300.000 ms
IEC 60255-3
51 Overcurrent
low
I > = 0,05 ... 40 In
t = 40 ... 300.000 ms
IEC 60255-3
51 IDMT
Normal-, Very-, Extremely- or Longtime- inverse time
characteristic
Ie = 0,05 ... 40 In
K = 0,05 ... 1,5
IEC 60255-3
51N Earth
fault
high
IE>> = 0,05 ... 40 In
t = 70 ... 100.000 ms
IEC 60255-3
51N Earth
fault
low
IE> = 0,05 ... 40 In
t = 70 ... 100.000 ms
IEC 60255-3
67N
Earth fault directional high
IE>> = 0,05 ... 40 In
t = 40 ... 100.000 ms
forward- / backward direction
isolated (sin
ϕ
) and earthed (cos
ϕ
)
IEC 60255-12
67N
Earth fault directional low
IE> = 0,05 ... 40 In
t = 40 ... 300.000 ms
forward- / backward direction
isolated (sin
ϕ
) and earthed (cos
ϕ
)
IEC 60255-12
