MICROENER IM3G-VX, Operation Manual

Page: 35 / 36

IM3G-VX
Doc. N° MO-0068-ING
Rev. 1
Pag. 35 of 36
Copyright 2010 - Microener
25. PROGRAMMING’S FORM
Date : Number Relay:
RELAY PROGRAMMING
Default Setting Actual Setting
Variable Value Units Description Variable Value Units
NodAd 1 - Identification number for connection on serial communication bus NodAd -
Fn
50
Hz
Mains frequency
Fn Hz
In
500
Ap
Rated primary current of the phase C.Ts.
In Ap
UnS 100 V Rated secondary voltage of Vts (phase to phase) UnS V
Ib 0.5 In
Generator’s rated current as p.u. of C.Ts rated current
Ib In
F(I>)
D - Operation characteristic of the low-set overcurrent element
F(I>)
-
U/I>
ON - Voltage control on level I>
U/I>
-
I> 1.0 Ib Trip level of low-set overcurrent element (p.u. of Ib) I> Ib
tI>
0.05
s
Trip time delay of the low-set overcurrent element
tI> s
U/I>>
ON - Voltage control on level I>>
U/I>>
-
I>> 3 Ib Trip level of high-set overcurrent element (p.u. of Ib) I>> Ib
tI>> 0.05 s Trip time delay of the high-set overcurrent element tI>> s
1Is
0.05
Ib
Generator’s max. continuos negative sequence current rating
1Is Ib
Ks 5 s Time multiplier of the I
2
t time-current curve Ks s
tcs 10 s Cooling time from trip level to the state corresponding to I2=1Is tcs s
2Is
0.03
Ib
Negative sequence current alarm level
2Is Ib
t2Is
1
s
Independent trip time delay of alarm element
t2Is s
Ir> 0.02 Ib Trip level of the reverse power element Ir> Ib
tIr> 0.1 s Independent trip time delay of reverse power element tIr> s
K1
300
%Zb
Diameter of the circle including the underimpedance tripping zone
K1 %Zb
K2
50
%Zb
Offset of the circle
K2 %Zb
tz 0.2 s Trip time delay of the underimpedance element tz s
ti
0
s
Integration time of underimpedance element.
ti s
Un
+/-
1u
Operation mode of first voltage element
Un 1u
1u 15 % Un Pick-up level of the first voltage element 1u % Un
t1u 1.00 s Trip time delay of the first voltage element t1u s
Un
+
2u
Operation mode of second voltage element
Un 2u
2u
10
% Un
Pick-up level of the second voltage element
2u % Un
t2u 3 s Trip time delay of the second voltage element t2u s
Fn
+/-
1f
Operation mode of first frequency element
Fn 1f
1f
005
Hz
Pick-up level of the first frequency element
1f Hz
t1f 3 s Trip time delay of the first frequency element t1f s
Fn + 2f Operation mode of second frequency element Fn 2f
2f
1
Hz
Pick-up level of the second frequency element
2f Hz
t2f
0.5
s
Trip time delay of the second frequency element
t2f s
Tc 60 m Thermal time constant of the alternator Tc m
Ta/n
100
%
Prealarm level of the thermal image
Ta/n %
W<
0.05
Wb
Pick-up level of the active underpower element
W< Wb
tW< 0.1 s Trip time delay tW< s
tBF 0.05 s Breaker Failure function tBF s