KAEL ke-DP01-100A Manual

ke-DP01-100A
Digital Protector
Voltage – Current
and
Frequency control
0 -100A
AREAS OF OPERATION:
■ In-Elevator motors protection
■ on submersible pump and electric motors protection
■ Resistance in oven with

General:

In three phase systems, it measures RMS values of AC voltages,
currents and system frequency sensitively. Using up direction button
(Select) phase-neutral voltages and phase-phase voltages monitor
sequentially.
ke-DP01 has many features.
Those are;

- Phase Failure

- Phase Sequence

- Over Voltage Protection

- Under Voltage Protection

- Voltage Unbalance (asymmetry) Protection

- Over Current Protection

- Under Current Protection

- Current Unbalance (asymmetry) Protection
- Over Frequency Protection
- Under Frequency Protection
When device is turn on if its adjusted voltages and frequency in its
interval and if phase sequence is correct relay switch on.
If any of error occurred ( except phase failure and phase sequence )
at the end of adjusted time relay switch off its contact. When system
return normal values, at the end of time out relay switch on.
IMPORTANT: L1 - N is device supply inputs. Thus,the applied L1 – N
voltage must be rated voltage of system . Otherwise normal led makes
flash and the device switched off its output contact.
The measured frequency also must the frequency of the system.
Phase Failure: (u-U)
Before starting system , it controls phase absence then if all phases
exits Normal LED turn on and relay contact switch on. In case of
missing of any L1,L2,L3 phases , Normal LED turn off and relay
switch off its contact .In this case
L1
L2
L3
Re
t-1
< t-1
V V V
,
L1 L2, L3
V V V
L12, L23, L13
I I I
L1, L2, L3
Hz
Phase Sequence Control
Over Voltage Protection
Under Voltage Protection
Unbalanced Voltage
Protection
Over Current Protection
Under Current Protection
Unbalanced Current
Protection
Over Frequency
Protection
Under Frequency
Protection
Latch Function
TRUE RMS
(seq)
(seq)
(o - U)
(u - U)
(unb)
(o - C)
(u - C)
(ubC)
(o - F)
(u - F)
u-U warn appears on display.
Display Functions:
V
L1
L1 L2 L3
V
L2
L1 L2 L3
V
L3
L1 L2 L3
V
L12
L1 L2 L3
V
L23
L1 L2 L3
V
L13
L1 L2 L3
Phase Sequetion: (Seq)
In case of wrong phase order , Normal LED turned off and relay
contact is not switch on. In this case
screen. If phase order is corrected , Normal LED turned on and out
relay switch on.
L1 L1,L2,L3 L1,L3,L2
L2
L3
Re
Voltage Unbalanced: (unb)
The phase-phase voltage unbalance limit can be adjusted
between(5% - 20%) . When it exceeds the adjusted limit , the device
switched off its out contact at the end of t-1 delay. In this case
warn appears on the screen. For the returning normal state,
asymmetry values should under 20% (hysteresis value). In this case
at the end of t3 time Normal LED turned on and output contact switch
on. If the phase-phase voltage unbalance, return adjusted value
shorter than t-1 time, output relay does not release its contact.
Hysteresis is 20 %.
unb = 000(oFF) protection is disable .
Example: Let's say that asymmetry value is set to %15 for a
3 x 380VAC.
In this case, relay contact switch off at (380-(380x0.15))=323 V.
Switch on the contact is performed at 323+(380x%15x%20)= 334V.
(%20 is the hysteresis).
(V - V )
max min
% unb = x 100
380
+ % unb
hys
V
nom
hys
- % unb
Level
Re
r-t
Special Buttons:
Select: (Up direction)
when pressing continuously,
screen displays frequency of
system. When button release
device continue to show voltage.
Reset:
If error case although disappeared
then device is not return to normal,
latch-function occurred and it
makes locked device.
Or Lock-function (only for currents)
may be occured.
After checking error in system then
restart device with pushing reset
button.
seq warn appears on the
L1,L2,L3 L2,L3
Hys = 380 x (% Asm) x (% 20)
< t-1
t-1 r-t
®
unb
t-1