4.5 Supply System
The unit has a default setting of 3Phase 4wire (3P4).
Use this
section to set the type of electrical system.
From the set-up menu, use
and
buttons to select the
system option.
The screen will show the currently
selected power supply.
Press
to enter the selection
routine. The current selection will
flash.
Use
and
buttons to
select the required system option:
1P2(W),3P3(W), 3P4(W).
Press
to confirm the
selection. SET indicator will
appear.
Press
to exit the system selection routine and return to the
menu. SET will disappear and you will be returned to the main
set-up Menu.
4.6 CLR
The meter provides a function to reset the maximum demand
value of current and power.
From the set-up menu, use
and
buttons to select the
reset option.
Press
to enter the selection
routine. The dIt will flash.
Press
to confirm the setting and press
to return to
the main set up menu.
4.7 Change Password
Use the
and
to choose the change
password option.
Press the
to enter the
change password routine. The
new password screen will appear
with the first digit flashing.
Use
and
to set the first
digit and press
to confirm
your selection. The next digit will
flash.
Repeat the procedure for the
remaining three digits.
After setting the last digit, SET will
show.
Press
to exit the number setting routine and return to the
Set-up menu. SET will be removed.
4.8 DIT Demand Integration Time
This sets the period in minutes over which the current and power
readings are integrated for maximum demand measurement. The
options are: off, 5, 10,15 30,60 minutes.
From the set-up menu, use
and
buttons to select the DIT
option. The screen will show
the currently selected integration
time.
Press
to enter the selection
routine.
The current time interval will flash.
Use
and
buttons to select the time required.
Press
to confirm the
selection. SET indicator will
appear.
Press
to exit the DIT selection routine and return to the
menu.
5 Specifications
5.1 Measured Parameters
The unit can monitor and display the following parameters of a
single phase two wire (1p2w), three phase three wire (3p3w) or
three phase four wire (3p4w) system.
5.1.1 Voltage and Current
• Phase to neutral voltages 100 to 289V a.c.
(not for 3p3w supplies).
• Voltages between phases 173 to 500V a.c.
(3p supplies only).
• Continuous Overload voltage 120%
• Percentage total voltage harmonic distortion
(THD%) for each phase to N ( not for 3p3w
supplies).
• Percentage voltage THD% between phases
(three phase supplies only).
• Current 100A (Direct connected)
• Continuous Overload current 120%
• Current THD% for each phase.
• Burden <10VA (nom 2VA)
• Self powered from any phase
5.1.2 Power factor and Frequency and Max. Demand
• Frequency in Hz
• Instantaneous power:
• Power 0 to 3600 MW
• Reactive power 0 to 3600 MVAr
• Volt-amps 0 to 3600 MVA
• Maximum demanded power since last Demand
reset Power factor
• Maximum neutral demand current, since the last
Demand reset (for three phase supplies only)
5.1.3 Energy Measurements
• Imported/Exported active
energy
• Imported/Exported
reactive energy
• Total active energy
• Total reactive energy
0 to 9999999.9 kWh
0 to 9999999.9 kVArh
0 to 9999999.9 kWh
0 to 9999999.9 kVArh
5.2 Measured Inputs
Voltage inputs through 4-way fixed connector with 2.5mm²
stranded wire capacity. Single phase two wire(1p2w), three
phase three wire(3p3w) or three phase four wire(3p4w)
unbalanced. Line frequency measured from L1 voltage or L3
voltage.
5.3 Accuracy
• Voltage
0·5% of range maximum
• Current
0·5% of nominal
• Frequency
0·2% of mid-frequency
• Power factor
1% of unity (0.01)
• Active power (W)
±1% of range maximum
• Reactive power (VAr)
±1% of range maximum
• Apparent power (VA)
±1% of range maximum
• Active energy (Wh)
Class 1 IEC 62053-21
• Reactive energy (VARh) ±1% of range maximum
• Total harmonic
1% up to 31st harmonic
distortion
• Response time to
1s, typical, to >99% of
step input
final reading, at 50 Hz.
5.4 Interfaces for External Monitoring
Three interfaces are provided:
• RS485 communication channel that can be
programmed for Modbus RTU protocol
• Relay output indicating real-time measured energy.
(configurable)
• Pulse output 400imp/kWh (not configurable)
The Modbus configuration (baud rate etc.) and the pulse relay
output assignments (kW/kVArh import/export etc.) are configured
through the set-up screens.
5.4.1 Pulse Output
Opto-coupler with potential free SPST-NO Contact
(Contact range 5-27VDC / Max current input: Imin 2mA and Imax
27mA DC). The pulse output can be set to generate pulses to
represent kWh or kVArh.
Rate
can be set to generate 1 pulse per:
0.01 = 10 Wh/VArh
0.1 = 100 Wh/VArh
1 = 1 kWh/kVArh
10 = 10 kWh/kVArh
100 = 100 kWh/kVArh
Pulse width
200/100/60 ms.
5.4.2 RS485 Output for Modbus RTU
For Modbus RTU, the following RS485 communication
parameters can be configured from the set-up menu:
Baud rate
2400, 4800, 9600, 19200, 38400
Parity
none (default) / odd / even
Stop bits
1 or 2
RS485 network address
nnn
– 3-digit number, 1 to 247
Modbus™ Word
order Hi/Lo byte order is set automatically to
normal as defined by IEEE 754. It cannot be configured from the
set-up menu.
5.5 Reference Conditions of Influence Quantities
Influence Quantities are variables that affect measurement errors
to a minor degree. Accuracy is verified under nominal value
(within the specified tolerance) of these conditions.
• Ambient temperature
23°C ±1°C
• Input waveform
50 or 60Hz ±2%
• Input waveform
Sinusoidal (distortion
factor < 0·005)
(if AC)
factor < 0·05)
• Magnetic field of
Terrestrial flux
external origin
5.6 Environment
• Operating temperature
-25°C to +55°C*
• Storage temperature
-40°C to +70°C*
• Relative humidity
0 to 95%,
non-condensing
• Altitude
Up to 3000m
• Warm up time
1 minute
• Vibration
10Hz to 50Hz, IEC
60068-2-6, 2g
• Shock
30g in 3 planes
*Maximum operating and storage temperatures are in the context
of typical daily and seasonal variation.
5.7 Mechanics
• DIN rail dimensions
76 x 100 mm (WxH)
per DIN 43880
• Mounting
DIN rail (DIN 43880)
• Sealing
IP51 indoor
• Material
UL 94 V-0
Self-extinguishing
6 Installation and Maintenance
6.1 Installation notes
Units should be installed in a dry position, where the ambient
temperature is reasonably stable and will not be outside the
range -25 to +55
⁰
C.
Vibration should be kept to a minimum.
Preferably, mount the Integra so that the display contrast is not
reduced by direct sunlight or other high intensity lighting.
