E.K.T. ke-DP01 User manual

Digital Protector
Voltage – Current
and
Frequency control
ke-DP01
Phase Sequence Control
Under Voltage Protection
Unbalanced Voltage
Protection
Over Frequency
Protection
Under Frequency
Protection
TRUE RM S
Latch Function
VL1,VL2,VL3
VL12,VL23,VL13
IL1,IL2,IL3
Hz
Ge eral:
In three phase systems it measures RMS values of AC voltages
(Select) phase-neutral voltages and phase-phase voltages monitor
sequentially.
ke-DP01 has many features.
Those are;
- Phase Failure (se q)
- Phase Sequence (se q)
- Over Voltage Protection (o - U)
- Under Voltage Protection (u - U)
- Voltage Unbalance (asymmetry) Protection (u b)
- Over Current Protection (o - C)
- Under Current Protection (u - C)
- Current Unbalance (asymmetry) Protection (ubC)
- Over Frequency Protection (o - F)
- Under Frequency Protection (u - F)
When device is turn on if its adjusted voltages and frequency in its
interval and if phase sequence is correct relay sw itch on.
If any of error occurred ( except phase f ailure and phase sequence )
at the end of adjusted time relay sw itch off its contact. When system
return normal values at the end of time out relay sw itch on.
L1
L2
L3
Re
< t-1 t-1
Phase Failure : (u-U)
Before starting system it controls phase absence then if all phases
exits Normal LED turn on and relay contact sw itch on. In case of
missing of any L1 L2 L3 phases Normal LED turn off and relay
sw itch off its contact .In this case u-U w arn appears on display.
Special Butto s:
VL2
VL3
L1 L2 L3
VL12
L1 L2 L3
VL23
L1 L2 L3
VL13
Sele ct: (Up direction)
w hen pressing continuously
system. When button release
device continue to show voltage.
Re se t:
If error case although disappeared
then device is not return to normal
latch-function occurred and it
makes locked device.
Or Lock-f unction (only for
currents) may be occured.
After checking error in system
then restart device w ith pushing
reset button.
IMPORTANT: L1 - N is device supply inputs. Thus the applied L1 – N
voltage must be rated voltage of system . Otherw ise normal led
makes flash and the device sw itched off its output contact.
The measured frequency also must the frequency of the system.
Phase Seque tio : (Seq)
In case of w rong phase order Normal LED turned of f and relay
contact is not sw itch on. In this case seq w arn appears on the
screen. If phase order is corrected Normal LED turned on and out
relay sw itch on.
Over Voltage Protection
Under Current Protection
Unbalanced Current
Protection
Over Current Protection
L1 L2 L3
L1 L2 L3
Dis play Fu ctio s:
AREAS OF OPERATION:
■ In-Elevator motors protection
■ On-pump and electric motor
■ Resistance in oven w ith
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Voltage U bala ced: (u b)
The phase-phase voltage unbalance limit can be adjusted betw een
(5% - 20%) . When it exceeds the adjusted limit the device
sw itched off its out contact at the end of t-1 delay. In this case
u b w arn appears on the screen. For the returning normal state
case at the end of t3 time Normal LED turned on and output contact
sw itch on. If the phase-phase voltage unbalance return adjusted
value shorter than t-1 time output relay does not release its
u b = 000(oFF) protection is disable .
Exam ple : Let's say that asymmetry value is set to %15 for a
3 x 380VAC.
In this case relay contact sw itch off at (380-(380x0.15))=323 V.
Sw itch on the contact is perf ormed at 323+(380x%15x%20)= 334V.
Re
L1 L2 L3 L2 L3
L1
L2
L3
hy s
+ % unb
Vnom
hy s
Lev el
Re
- % unb
t-1 < t-1 t-1
L1 L3 L2L1 L2 L3
r-t r-t
(Vmax - Vmin)
% unb = x 100 Hys = 380 x (% Asm) x (% 20)
380
currents and system frequency sensitively. Using up direction button
p f f
screen dis l ys frequency o a
asymmetry values should under 20% (hysteresis value). In this
contact. Hysteresis is 20 %.
(%20 is the hysteresis).
VL1
L1 L2 L3

V
Re t
t
t-1
(o-U)
(u-U)
r-t t-1 r-t
Umax
Umin
Under Voltage
Over Voltage L1
L2 L3
Normal
Normal
Over a d U der Voltage : (o-U),(u-U)
Under voltage (u-U) it can adjusted betw een Umin= (300 – 370 V).
Umax=(390 – 460 V).
If the voltage drops below the adjusted under voltage limit w hen u-U
show s on the screen and device sw itch off its output contact end of
the t-1 time Normal LED turned on .In this case u-U w arn appears on
the screen.
If the voltage exceed the adjusted over voltage limit Normal LED
turned off and output relay sw itch off. In this case o-U w arn appers
on its screen.
Hysteresis is 6 V.
I(A)
Re t
t
Sdt d-t r-t d-t r-t
o-C
u-C
%hYS
%hYS
2.6 Asym m e tric Curre t Protectio :
It can be set by the user betw een 5% and 40%. It controls the
asymmetric that may occur in the current of the three phases. That
may occur w hen o and the other one
is high. That may cause asymmetric current in the motor's bobbin.
This w ay the motor's bobbin is protected. Furthermore it protects the
motor f rom missing phase or a possible unplugged or cut w iring.
If the unbalance betw een the phases' current exceeds the adjusted
value the sw itch off occurs after t-1 delay.
If the current unbalance exceed the adjusted value Normal LED
turned off and output relay sw itch off. In this case ubC w arn
appears on its screen.
This function can be disable if ubC value = 000 (oFF)
Over a d U der Curre t : (o-C),(u-C)
When the current of the protected system goes below the adjusted
value it sw itches off its output contact af ter d-t delay.
Normal LED turn of f and relay sw itch off its contact .In this case
u-C w arn appears on display.
When any current passing through any phase of the protected
system
exceeds the adjusted value the device sw itches off its output
contacts after a proper time (d-t).Normal LED turn off and relay
sw itch of f its contact .In this case o-C w arn appears on display.
NOTE: Under current protection set value with its hysteresis must
not overlap with over current protection set value with its hysteresis
or, the under current protection set value must not b e higher than the
over current protection set value.
VOC
OC
r-t r-t
Re t
t
t-2
(o-F)
(u-F)
r-t t-2 r-t
55 Hz
45 Hz
Under Frequency
Over Frequency L1
L2 L3
Normal
Normal
f (Hz)
Start delay tim e: Sd-t
It can be set betw een 1 and 60 seconds.It is used to prevent the
sw itch of f f rom occurance because of the motor's inrush current.
This function can be disable if Sd-t value = 000 (oFF)
Re tur Tim e : r-t
it show s the delay time that device w ill w ait to sw itch on its output
Very Over Curre t Coefficie t : VOC (Current Very Sudden
Sw itch Off Protection)
When the current value exceeds the adjusted value w ithin the start
delay time the device sw itches of f its output contact immediately.
Very Over Current value = (o – C) x (VOC)
This function can be disable if VOC = 000 (oFF)
Over Curre t Coefficie t : OC (Current Sudden Sw itch Off
Protection)
delay time the device sw itches of f its output contact immediately.
Over Current value = (o – C) x (OC)
This function can be disable if OC = 000 (oFF)
Over a d/or U der Freque cy Protectio : ( 40 – 70 Hz )
Under Frequency be able to set betw een(u-F) = 40 Hz ...[(o-F) -0 4]
Over Frequency be able to set betw een (o-F) =[(u-F) + 0 4]...70 Hz
If required it can be set only under frequency or only over
frequency protector only. (if system frequency above 55 Hz under
screen displays o-F w arning and end of time t-2 relay sw itch off
its output contact )
if o-F = oFF and u-F = 45 Hz set device w orks as under
frequency protector only . (if system frequency below 45 Hz
under screen displays u-F w arning and end of time t-2 relay
sw itch of f its out contact.)
if o-F = oFF and u-F = oFF set frequency protection is disabled.
LOCKING FUNCTION :
It can be controlled by tw o parameters. Locking time and
Locking counter. If the number of opening reaches the
adjusted locking counter w ithing the adjusted locking time then
device sw itch off its contact and locks its f unctions until the
user pressed Rese t button.
If the locking counter is adjusted to oto then this function is
disable and device never locks itself.
L-t : Locki g Tim e ( 001 – 060 min. )
It is w ell know the frequently occurring faults may damage
system. For that the device w hen number of faults reaches the
adjusted locking number w ithin this locking time. This w ay the
system is protected and user has chance to investigate the
problem.
g ( )
The number of f aults allow ed w ithin the period L-t. If number of
faults exceeds this adjusted counter value device locks itself.
In this case (- - -) w arn appears on its screen. User must
press Reset button then the fault passes in order to unlock the
device.
V
Re
t
t
(o-U)
(u-U)
r-t
Over Voltage
1. E rror L1
L2 L3
Normal
Normal
L- C (number of lock) = 2 piece
L- t (lock time) = 3 min. if select ;
t-1 t-1 r-t
Pushed to Res et button
and Loc k have res eted.
Loc ked oc c urred
< 3 mi nutes
Over Voltage
2. Error
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ne of the phases' voltage is low
Over voltage (o-U) it can adjusted betw een
If o-F = 55 Hz and u-F = oFF set device w orks as over
frequency protection as w ell as both of protection can be disabled.
Under Current (u-C)
Over Current (o-C)
relay w hen f ailure ends after a sw itch of f. It can be set betw een 0 5
and 99 9 seconds.
It can be set by the user betw een 2 1 and 6.
It can be set by the user betw een 1 1 and 2.
When the current value exceeds the adjusted value w ithout th start e
p p tyIf L- C is set to oto then this ro er is disabled.
L-C : Locki g Cou ter oto 001 – 010 iece p

SET
SET
ACCESSING PARAMETER M ENU:
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
+
SET
SET
Push the SET button
during 3 seconds.
SET
Return time
( r - t )
return time from error
00 5 – 99 9 (sec.)
Locking Counter
(L - C)
[oto (001–010 pieces)]
oto: function is disabled
Locking Time
(L – t )
001 – 060 (minutes)
quit
Retur from
VOLTAGE Me u
Retur from
CURENT Me u
Over Voltage
( o – U)
phase - phase
390 - 460 (V)
oFF:function is disabled
Under Voltage
( u – U)
phase - phase
300 - 370 (V)
oFF:function is disabled
Unbalance for Voltage
( u b )
0 05 – 0 40
(5% - 40% )
oFF:function is disabled
Delay Time for Voltage
( t - 1)
00 1 – 99 9 (sec.)
Delay Time for Frequency
( t - 1)
00 1 – 99 9 (sec.)
Over Frequency
( o – F )
[(u-F) + 0 4] ≤...≤ 70 Hz
oFF:function is disabled
Under Frequency
( u – F )
40 Hz ≤...≤ [(o-F) – 0 4]
oFF:function is disabled
Accessing
Voltage
Parameter
Accessing
Curre t
Parameter
Current transformer
Primer value
Ct Ct
000 001
005 – 000 A
( 5 – 1000 ) A
Over Current
( o – C)
oFF:function is di sabled
ysteresis Value
( hYS )
00.3(3%) – 0.50 (50%)
Delay Time for Current
( d - t)
(0 1 – 60 sec.)
Start Delay Time
( Sdt )
(0 1 – 60 sec.)
oFF:function is di sabled
Very Over Curre t
Coefficie t
(VOC)
VOC = 2 1 - 6 0
oFF:function is di sabled
Under Current
( u – C)
oFF:function is di sabled
Unbalance for Current
( u b )
0 05 – 0 40
(5% - 40%)
oFF:func tion is disabled
Over Curre t
Coefficie t
(OC)
OC = 1 1 - 2 0
oFF:function is di sabled
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+
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+
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+
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+
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+
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+
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+
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+
_
+
_
+
_
+
_
SET
Lock :
Locking function for
currents.
o : function is inabled
oFF: function is disabled
+
_
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ATTENTION !!!
- Clean the device using dry dust cloth after turned off device.
- Read and follow the instruction on this manual and attached label.
58mm
32mm
48mm
90mm
36mm
45mm
62mm
53mm
Co ectio :
TECHNICAL INFORM ATION:
Rated Voltage (Un) : 220Vac (L1-N)
Operating Range : (0 8-1 1) x Un
Frequency : 50 / 60 Hz
Supply Pow er Consumption : < 4VA
Current Transformer Ratio : X / 5A
Current Measurement Range : (for seconder current)
0 05 - 6 Amp AC
Voltage Measurement Range : (Phase-Phase)10 - 500 Vac 45 - 65Hz
: (Phase-Neutral )10 - 300 Vac 45 - 65Hz
For pow er supply(L1 - N) 176V – 242V
Voltage Measurement
Pow er Consumption : <1VA (for one phase)
Measurement Sensitivity : %1±1 digit
Contact Current : Max. 3A / 240Vac
Device Protection Class : IP 20
Connector Protection Class : IP 00
Temperature : - 5 °C .... + 50 °C
Connection Type : To connection rail in electrical panel
Dimension :
L3
N
1A1A 1A
L2
L1
Load
X/5
X/5
X/5
18
16
15
N
Fault
lamp
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