VAMP 259 - Voltage Protection

Technical description
9 Technical data
9.3 Protection stages
VM259.EN007
VAMP 24h support phone +358 (0)20 753 3264
287
Directional earth fault stages I
0
>, I
0
>> (67N)
Pick-up current
0.005 - 8.00 x I
0n
0.05 … 20.0 When I
0Calc
Start voltage
1 – 50 %U
0n
Input signal
I
0
( input X1-7 & 8)
I
0Calc
( = I
L1
+I
L2
+I
L3
)
Mode
Non-directional/Sector/ResCap
Base angle setting range
-180 to + 179
Operation angle
±88 (10 - 170)
Definite time function:
- Operating time
0.10
**)
– 300.00 s (step 0.02 s)
IDMT function:
- Delay curve family
(DT), IEC, IEEE, RI Prg
- Curve type
EI, VI, NI, LTI, MI…depends on the family *)
- Time multiplier k
0.05  20.0, except
0.50  20.0 for RXIDG, IEEE and IEEE2
Start time
Typically 60 ms
Reset time
<95 ms
Reset ratio
0.95
Reset ratio (angle)
2
Inaccuracy:
- Starting Uo&Io (rated value In= 1 .. 5A)
±3% of the set value or ±0.3% of the rated value
- Starting Uo&Io (Peak Mode when, rated
value Io
n
= 1 .. 10A)
±5% of the set value or ±2% of the rated value
(Sine wave <65 Hz)
- Starting U
0
&I
0
(I
0Calc
)
±3% of the set value or ±0.5% of the rated value
- Angle
±2when U> 1V and I
0
> 5% of I
0N
else ±20
- Operate time at definite time function
±1% or ±30 ms
- Operate time at IDMT function
±5% or at least ±30 ms **)
*) EI = Extremely Inverse, NI = Normal Inverse, VI = Very Inverse, LTI = Long Time Inverse
MI= Moderately Inverse
**) This is the instantaneous time i.e. the minimum total operational time including the fault
detection time and operation time of the trip contacts.
9.3.3. Voltage protection
Overvoltage stages U>, U>> and U>>> (59)
Overvoltage setting range:
50 - 150 %U
n
for U>, U>> **)
50 - 160 % U
n
for U>>> **)
Definite time characteristic:
- operating time
0.08
*)
- 300.00 s (step 0.02) (U>, U>>)
0.06
*)
- 300.00 s (step 0.02) (U>>>)
Starting time
Typically 60 ms
Resetting time U>
0.06 - 300.00 s (step 0.02)
Resetting time U>>, U>>>
<95 ms
Retardation time
<50 ms
Reset ratio
0.99 – 0.800 (0.1 – 20.0 %, step 0.1 %)
Inaccuracy:
- starting
±3% of the set value **)
- operate time
±1% or ±30 ms
*) This is the instantaneous time i.e. the minimum total operational time including the fault
detection time and operation time of the trip contacts.
**) The measurement range is up to 160 V. This limits the maximum usable setting when
rated VT secondary is more than 100 V.