Thytronic NV10P, Руководство пользователя

Страница: 19 / 240

19 NV10P - Manual - 01 - 2015 TECHNICAL DATA
Ten minutes overvoltage - 59Uavg
[1]
for inductive VTs versions
Common confi guration:
Operating logic ( Logic59Uavg ) AND/OR
Uavg> Element
Defi nite time
First threshold defi nite time (
U
avg
>
def
) 0.50...1.50 U
n
(step 0.01 U
n
)
Time delay ( t
Uavg
>
def
) 0...1000 s (step 1 s)
Pickup time according to the reference conditions
[2]
Pickup accuracy ± 1% ± 1% U
n
Time delay accuracy
[3]
5% ± 3 s
Ten minutes overvoltage - 59Uavg
[1]
for electronic sensor versions
Common confi guration:
Voltage measurement type ( Utype59Uavg ) U
ph-ph
/ U
ph-n
Operating logic ( Logic59Uavg ) AND/OR
Uavg> Element
Defi nite time
First threshold defi nite time (
U
avg
>
def
) 0.50...1.50 U
n
(step 0.01 U
n
/ E
n
)
Time delay ( t
Uavg
>
def
) 0...1000 s (step 1 s)
Pickup time according to the reference conditions
[2]
Pickup accuracy ± 1% ± 1% U
n
/ E
n
Time delay accuracy
[3]
5% ± 3 s
Residual overvoltage - 59N for inductive VTs versions
Common confi guration:
Residual voltage measurement type for 59N - direct/calculated (
3
V o
Type59N
) U
E
/ U
EC
Operation from 74VT external ( 74VText 59N) OFF /Block
U
E
> Element
U > Curve type ( U >
Curve
) DEFINITE/INVERSE
[4]
U
E
> Reset time delay ( t
UE>RES
) 0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Defi nite time
59N First threshold defi nite time (
U
E
>
def
) 0.01...0.70 U
En
(step 0.01 U
En
)
U
E
>
def
Operating time ( t
UE
>
def
) 0.07...100.0 s
0.07...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Inverse time
59N First threshold inverse time (
U
E
>
inv
) 0.01...0.50 U
En
(step 0.01 U
En
)
U
E
>
inv
Operating time ( t
UE
>
inv
) 0.10...100.0 s
0.10...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Element
U
E
>>
U
E
>> Reset time delay ( t
UE>>RES
) 0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Defi nite time
59N Second threshold defi nite time (
U
E
>>
def
) 0.01...0.70 U
En
(step 0.01 U
En
)
U
E
>>
def
Operating time ( t
UE
>>
def
) 0.07...100.0 s
0.07...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
U
E
>> Reduced Operating time ( t
cUE
>>
def
) 0.07...10.00 s (step 0.01 s)
t
cUE
>> Activation time ( t
atcUE
>>) 1...60 s (step 1 s)
Pickup time ≤ 0.04 s
Dropout ratio 0.95...0.98
Dropout time ≤ 0.04 s
Overshoot time 0.03 s
Pickup accuracy ± 1% ± 1% U
En
Operate time accuracy 5% or ± 10 ms
Note 1 The function is based on the measurement of the mean of the three phase voltages of 10 minutes with update every three seconds
Note 2 The pickup time depends on the initial and fi nal value of the input voltage; e.g. with a setting of threshold equal to 1.10 Un:
- with initial value 0 and fi nal value 1.1 Uavg> def (1.1x1.1 = 1.21 Un) the pickup time is 498 s
- with initial value 0.9 Uavg>def (0.9x1.1 = 0.99 Un) and fi nal value 1.1 Uavg>def (1.1x1.1 = 1.21 Un) the pickup time is 285 s
Note 3 Since the aggregate value is updated every 3 s, times are only meaningful in multiples of 3 s
Note 4 The mathematical formula for INVERSE curve is t= (0.5 ∙
t
UE
>
inv
) / [( U
E
/ U
E
>
inv
) - 1]
t = operating time (in seconds)
t
UE
>
inv
= operating time setting (in seconds)
U
E
= residual input voltage (direct or calculated)
U
E
>
inv
= threshold setting
‡
‡
‡