~ 10 ~
UBZ-305 NOVATEK-ELECTRO
2.3 Programmable Parameters
Programmable parameters and their variation limits are given in Table 2.6.
Table 2.6
– Programmable Parameters
Settings and readings
Parameter
on LCD
Min.
value
Max.
value
Factory
setting
Message on LCD, actions
Address
Set the current time
Real Time
Setting of current time and date
(it. 5.3.8)
See Table
5.9
Transformers
Rated output current of
used CT, A
CT out i
1
5
5
151
Rated current of CT, A
CT nom i
20
800
100
152
Basic parameters
Rated current of motor,
A
Rated
Inоm
0
630
0
0
– current is not set: UBZ will not
enable the load relay (it.5.2.7).
150
Time during which the
average current is
measured, s
Tm
average i
10
600
60
Time during which the average
current is measured (parameters:
"Average
i1",
"Average
i2",
"Average i3" of Table 2.4).
153
Over-current protection
Type of over-current
protection
Type
Imax
0
5
0
0
– "Indep" - protection with
independent time delay.
Types
of
protection
with
dependent time delay:
1
– "SIT" ; 2 – "VIT (LTI)";
3
– " EIT"; 4 – "UIT"; 5 – "RI".
154
Actuation setting for
over-current protection,
repetition factor
Imax coef
0.8
9
4
Repetition factor is set relative to
rated motor current (it is used at
"Type Imax" = "indep").
155
Current protection delay
tripping, s
Imax delay
0.3
600
10.0
156
Permit for protection
operation
Imax
protec
0
2
2
0
– "Off" – protection is off;
1
– "OnnAR" – protection is on,
ARS after tripping is disable;
2
– "On AR"- protection is on,
ARS is enabled.
157
Sequence of tripping
relative to overheating
protection
Imax<>T
0
1
1
0
– "On" – tipping regardless of
overheating protection;
1
– "Ind" – if there is no
overheating, then
over-current
indicating displays but load relay
is not disabled.
158
Ground fault protection (for zero-sequence current
– I earth)
Over-current tripping
setting, A
I earth
tresh
0.3
10
0.5
If the parameter is not included in
MNS mode list, then default value
is:
0.5 at In<=50A;
1.0 at In>50A.
159
Tripping delay, s
I earth
delay
0.3
2
1
160
Permit for protection
operation
I earth
protec
0
2
2
0
– "Off" - protection is off;
1
– "OnnAR" - protection is on,
ARS after tripping is disable,
2
– "On AR"- protection is on,
ARS is enabled.
161
Negative-sequence current protection
Actuation setting, %
I2 rev
tresh
5
20
10
It is set as percentage of rated
current.
162
Tripping delay, s
I2 rev delay
0.3
10
5
163
Permit for protection
operation
I2 rev
Protect
0
2
2
0
– "Off" - protection is off;
1
– "OnnAR" – protection is on,
ARS after tripping is disable;
2
– "On AR"- protection is on,
164