3
）
F
v
4
）
V
a
5
）
P
6
）
P
4.14 P
Loa
current p
(OTP), re
The main
press an
electroni
automati
4.14.1
If the
status re
condition
connecto
the outpu
Operatio
Che
protectin
under tes
(OVP) di
4.14.2
The
features.
Hardwar
current ra
when the
over curr
Software
+
delay tim
value is o
For the sec
，
V
to s
voltage, the
For the th
VFD displa
automatica
Press key
Press “ESC
Protect
ad has the
protection
（
everse volt
nframe will
ny button o
c load com
ically shut
Over V
e OVP circ
egister’s (O
n will rema
or’s VF pin
ut state of
ons to clea
eck whethe
ng voltage r
st. Press a
isplayed on
Over C
electronic
.
re OVP
: lo
ange, once
e hardware
rent protec
e OCP: use
number 5
me before a
over the ov
cond mean
FD will dis
start the ba
e load will
hird means
ay ”Stop Ti
ally turn off
to
C”, quit the
tion Fu
following
（
OCP
）
, o
tage protec
l act appro
n front pan
me into ove
down and
Voltage
cuit has be
OV) and (VF
in until the
on the rea
the power
ar the OVP
er the input
ranges, if i
any key on
n the front
Current
c load inclu
oad’s maxim
e the hardw
e OCP is re
ction won’t
ers can set
>Protect>
alarm. Whe
ver current
ns
：
press k
splay”Stop
attery test.
auto turn o
s: press
mer= S”
，
f after the s
start to tes
e battery te
unction
protection
over power
ction(LRV/
opriatly onc
nel to resto
er temperat
VFD will d
Protect
een triggere
F) bit is se
ey are rese
ar panel wi
supply un
P state
t voltage is
it is outside
the front p
panel will
Protect
des both h
mum input
ware OCP
emoved, th
affect load
t load’s sof
Alimit’ set
en the softw
t protection
29
key
Voltage= V
. When the
off the inpu
+num
，
set the d
setting time
st
est mode.
ns
functions:
r protection
/RRV.
ce any of th
ore the pro
ture protec
display OT
tion
（
OV
ed, input w
t, the main
t. Once ov
ill output T
der test via
s in the load
e the range
panel (or se
disappear
tion
（
O
hardware a
current wi
is triggere
he status re
d’s on/off s
ftware OC
ON, “Apoi
ware OCP
n set value
+number
V”
，
set the
e battery vo
ut.
mber 3
，
se
discharging
e.
over volta
n(OPP), ov
he above p
tection fun
ction, the b
P.
VP
）
will be shut
n frame scr
ver voltage
TTL high vo
a this pin.
d’s rated v
e, please d
end comm
r, load exits
CP
）
and softwa
ill be limite
ed, the stat
egister’s O
state.
P value, st
nt” set OC
P function is
e, load will
IT880
r 3
，
select
e cut-off vo
oltage falls
lect Timer
，
g time, the
age protect
ver temper
protection i
nction. For
buzzer will
down, buz
reen will di
protection
oltage leve
voltage or t
disconnect
mandPROT
s OVP prot
re over cu
ed at about
us register
OC bit will b
teps:
CP current v
s actived, i
automatica
00 User
User M
Voltage
，
p
oltage,pres
s to the cut
，
press
load will
tion
（
OVP
rature prote
is actived.
example, t
alarm, the
zzer alarm
isplay(OVP
n occur, the
el, you can
the program
the instrum
Tection:CLE
tection sta
rrent prote
t 110% of t
r’s OC bit w
be reset. H
value,” Ad
if the load
ally off, VF
Manual
Manual
press key
ss key
t-off
key
，
P
）
,over
ection
you can
the
input will
, the
P), the
e 8 pins
control
mmed
ment
Ear), the
te.
ection
the
will be set;
Hardware
elay” set
current
FD
