Poznámky redaktora
1 t4< 1s, step 0.20xIn I4<1xIn
step 0.
(3) no-trip time
(4) the protection disabled for current values greater than 4In, where 0.50
0.1xIn
0.5s t6< step 0.
(5) Max trip time
For all cases not covered the above hypotheses, the following tolerance values
apply:
Protections Trip threshold Trip time
L Release between 1.1 1.05 and 1.5s, step 0.2.10 step 0.01s
0.25 20%
S 10% 20%
± 15% 60ms
G 10% 20%
Others 20%
Model 2234 Apparatus Scale
L2778
Doc-No- 2
Page No.06s(5)
950ms@0.01s2start-up
@I In
g
± 15%
Gext
(t= k)
H 0.05 t2< 0.1s t4< 1s, step 0.04 t4sel 0.6xIn I2<10xIn
step 0.05s
0.8 step 0.20 step 0.02xIn
0.80s(51
U
(t= k)
H I6< 90% %Unb.05 t2< 0.6 xIn <10xIn2start-up
step 0.2 step 0.05s
0.01s2start-up
0.1xIn
< 30ms
0.0xIn I5< 15xIn
step 0.30-0.10 step 0.01s2start-up
where I>I4
± 10%
M CR
(t= k)
H 6.05 and1.8 s,
step 0.02xIn
0.20xIn I4<1xIn
step 0.4xIn I1< 1xIn
step 0.1xIn
0.02xIn
0.10 30s, step 0.01xIn
3 t1< 144 s(1), step 3s
t1@ 3I1
Release between
1.5 0.20xIn I4<1xIn
step 0.1 t4< step 0.13.9.6 xIn <10xIn
step 0.02xIn
0.1 t4< step 0.01s
where I>I4
± 7%
The data
± 10% s
Gext
(t= k/i2)
H 0.20xIn I4<1xIn
step 0.1 30s, step 0.04 t2sel< 0.1xIn
< 30ms(3) 10%
G(4)
(t= k)
H 0.06-0.8 and greater than where I4> 0.
(2) These tolerances are based the following assumptions:
- self-supplied relay full power (without start-up)
- presence auxiliary power supply
- two-phase three-phase power supply
- preset trip time 100 ms.0-5.0-7.5 In,
greater than In, where 0.01s
where I4
± 7%
The data
± 10% s
G(4>
(t= k/i2)
H 0.5s 10% The data
± 10% s
OT
(temp k)
□ Fixed, defined by
SACE
Instantaneous 5°C -
linst Automatic, defined
by SACE
Instantaneous
LC1/LC2 loads
control
H 50%^100% step 0.2 xI1
± 10%, 6In
g
± 20%, 6In
g
S
(t= k)
H 0.12 Summary table the protection function settings for the PR122/P
Protection
Disabling
Disablingof
TRIPonly
Zoneselectivity
Start-upthreshold
t
or
£
e
£ al
£ er
h
1-
Trip Threshold Trip Time rip
th ld
to e
( )
T rip tim e
to (2)
L
(t= k/i2) curve
IEC 60255-3
□ 0.01s4start-up
0.01s4start-up
0.05xI1
W arning 0,3-h10I step 0,05xI' 10% 10+40 ms
(1) The minimum value this trip regardless the type curve set (self
protection).2s, step 0.0-10-20
-30A
0.
step 1%
0.
49/158
.80s(3) 20%
140ms@0.01s
± 7%,I In
g
± 10%,I In
g
The data
± 10% s
S
(t= k/i2)
H 0.01s 10xIn
± 7%,Ig< In
g
± 10%,Ig> In
g
± 15%, 6In
± 20%, 6In
g
(t= k)
H 1,5xIn I3< 15xIn
step 0.8 In.05s
@I >4In
± 15%
Rc
(Idn)
H Idn =3.20xIn I4<1xIn
step 0.10-0.40-0.1xIn
0.20-0.04 t4sel 0.02xIn
0.05s
0
