General Informations
The device measures the True RMS value of the voltage and frequency in
mono phase systems accurately.
It is possible to observe the voltage value in the upper screen and the
frequency value in the buttom screen simultaneously.
The device contains many protections as followes:
■ Over Voltage protection.
■ Under voltage protection:
■ Over frequency protection.
■ Under frequency protection.
As the device is beeing installed it closes its output contact if the voltage and
frequency values are within the adjusted ranges. In case of any previous
mentioned faults the the device opens its output contact at the end ofdelay
adjusted by user. When the values return withiin the adjusted ranges the
device closes its output contacts at the end of an adjusted delay.
V
Re
t
t
t-1
(o-U)
(u-U)
t-3
t-1
t-3
Umax
Umin
L1,L2,L3
Normal
Normal
Over&Under Voltage : (o-U) (u-U)
Over voltage (o-U), it can be adjusted between Umax= (230 – 290 V).
Under voltage (u-U), it can be adjusted between Umin=(150 – 210 V).
■ If the voltage drops below the adjusted under voltage limit then
u-U
shows on
the screen and the device closes it output contact after t-1 delay.
■ If the voltage exceeds the adjusted over voltage limit then
o-U
shows on the
screen and the device closes it output contact after t-1 delay.
The hysteresis value is 6V.
Locking Property :
It can be controlled by two parameters; Locking Time and Locking Counter.
If the number of openning reaches the adjusted locking counter within the
adjusted locking time then the device opens its output contact and locks its
functions until the user pressed
Reset
button.
If the locking counter is adjusted
to
oto
then this function is inactive and the device never locks itself
L-t : Locking Time
( 001 – 060 minutes )
It is well known the the frequentely occuring faults may damage the system. For
that the device locks itself when the number of faults reaches the adjusted
locking number within this locking time. This way the sistem is protected and the
user has the chance to investigate the problem.
L-C : Locking Counter
( oto , 001 – 010 )
The number of the faults allowed within the period L-t. If the number of the faults
exceeds this adjusted counter value then the device locks itself. The user must
press Reset button agter the fault passes in order to unlock the device. If L-C is
set to
oto
then this property is inactive.
Over and/or Under Frequency Protection : ( 40 – 70 Hz )
Under frequency can be adjusted be tween (u-F) = 40 Hz .......[(o-F)-0,4]
Over frequency can be adjusted between (o-F) = [(u-F) + 0,4]..... 70 Hz.
It is possible to activate one or two of these protections or deactivate them
both.
■ If o-F = 55 Hz and u-F = oFF then the device protects from over frequency
( if the frequency exceeds 55hz then the device shows
o-F
on the buttom
screen and opens its output contact at the end of t-2 delay).
■ If o-F = oFF and u-F = 45 Hz then the device protects from under frequency
( if frequency drops below 45Hz then the device shows
u-F
on the buttom
screen and opens its output contact at the end of t-2 delay).
■ If o-F = oFF and u-F = oFF then the frequency protection is disabled.
Parameters :
The menu where protection functions are adjusted. To enter this menu press
set button until set is shown on the nuttom screen. Parameters are as follow:
► o-U : Over Voltage Adjustment
( 230 V – 290 V )
If the phase – phase voltage exceeds the adjusted value then the
device opens it output contacts at the end of t – 1 delay.
► u-U : Under Voltage Adjustment
( 150 V – 210 V)
If the phase – phase voltage drops below the adjusted value then
the device opens it output contacts at the end of t – 1 delay.
► t-1 : Openning Delay (Voltage)
( 00,1 – 99,9 seconds)
If any of voltage faults occurs, and if it lasts for t-1 period then
the device opens its output contact.
► t-2 : Openning Delay (Frequency)
( 00,1 – 99,9 seconds)
If any of freuqency faults occurs, and if it lasts for t-2 period
then the device opens its output contact.
► t-3 : Returning Delay (Voltage and Frequency)
( 00,1 – 99,9 seconds)
To close the output contact after openning because of both
voltage and frequency faults, the values should return to the
normal ranges and after t-3 delay the device closes its output
contact.
► L-t : Locking Time
( 001 – 060 minutes )
The device locks itself when the number of faults reaches the
adjusted locking number within this locking time. This way the
sistem is protected and the user has the chance to investigate
the problem.
► L-C : Locking Counter
( oto , 001 – 010 )
The number of the faults allowed within the period L-t. If the
number of the faults exceeds this adjusted counter value then the
device locks itself. The user must press Reset button agter the
fault passes in order to unlock the device. If L-C is set to
oto
then this property is inactive.
► o-F : Over Frequency Adjustment
It can be set between (o-F) = [(u-F) + 0,4]..... 70 Hz.
If it is set to o-F = oFF then this protection is disabled.
► u-F : Under Frequency Adjustment
It can be set between (u-F) = 40 Hz .......[(o-F) – 0,4] .
If it is set to u-F = oFF then this protection is disabled.
► qut : Quit
If Set button is pressed there then the device goes back to the
measurement screen.
Under Voltage
Over Voltage
V
Re
t
t
(o-U)
(u-U)
t-3
Over Voltage
1. Fault
L1,L2,L3
Normal
Normal
If: L-C (Locking counter) = 2
L-t (Locking time) = 3 minutes
t-1
t-1
t-3
Reset Button is pushed
and locking is ended.
Locking Occurs
< 3 Minutes
Over Voltage
2. Fault
Re
t
t
t-2
(o-F)
(u-F)
t-3
t-2
t-3
55 Hz
45 Hz
Under Frequency
Over Frequency
L1,L2,L3
Normal
Normal
f(Hz)
DV – 72 -
01C
®
DIGITAL VOLTAGE & FREQUENCY MONITORING
DEVICE
► True RMS
TECHNICAL DATA:
Rated Voltage (Un)
: 220Vac (L1-N)
Operating Range
: (0,8-1,1) x Un
Frequency
: 50 / 60 Hz
Supply Pow er Consumption
: < 4VA
Measurement Pow er
Consumption
: <1VA
Voltage Measurement
: 10 – 500 Vac
Frequency Measurement
: 40 / 100 Hz
Measurement Sensitivity
: %1±1 digit
Measurement Catagory
: CAT III
Display
: 3 Digit x 2 line LED
Contact Current
: Max. 5A / 240Vac
Protection Class
: IP 20
Connector Protection Class
: IP 00
Temperature
: - 5 °C .... + 50 °C
Humidity
: %15 ...... %95
(w ithout condensation)
Connection Type
: To front panel tap
Dimensions
: 72x72x80 mm
