Setup and Operation Manual
Integra 1221
Panel Mounted Energy Meter
for Single and Three Phase
Electrical Systems
1 Introduction
This document provides operating, maintenance and installation instructions.
This unit measures and displays the characteristics of Single Phase Two Wire
(1P2W), Three Phase Three Wire (3P3W) and Three Phase Four Wire (3P4W)
networks. The measuring parameters include Voltage (V), Current (A),
Frequency (Hz), Power (kW/KVA/KVAr), Power Factor (PF), Imported, Exported
and Total Energy (kWh/kVArh). The unit also measures Maximum Demand
Current and Power, this is measured over preset periods of up to 60 minutes.
This particular model accommodates 0.1A Current Transformers and can be
used with a wide range of CTs. It also comes with a complete communications
capability with built in Pulse and RS485 Modbus RTU outputs, configuration is
password protected. This product is self-powered from any phase of the supply.
1.1 Unit Characteristics
The Integra 1221 can measure and display:
• Phase to Neutral Voltage and THD% (Total
Harmonic Distortion) of all Phases
• Line Frequency
• Current, Maximum Demand Current and Current
THD% of all Phases
• Power, Maximum Power Demand and Power Factor
• Imported, Exported & Total Active Energy
• Imported, Exported & Total Reactive Energy
The unit has a Password-Protected set up menu for:
• Changing the Password
• System Configuration - 1P2W, 3P3W & 3P4W.
• Demand Interval Time
• Reset for Demand Measurements
• Pulsed Output Duration
1.2 Current Transformer Primary Current
This unit requires configuring to operate with the appropriate current
transformer(s). The secondary current is 0.1A. The CT Primary value should be
set according to the CT. It can be used on primary currents up to 9999A. e.g.
For a 250/0.1A CT. CT2 = 0.1, CT1 = 250
On the MID Version, you can only program the CT multiplier ONCE.
This cannot be overridden and must be returned to the factory.
1.3 RS485 Serial –Modbus RTU
This unit is compatible with remote monitoring through RS485 Modbus RTU.
Set-up screens are provided for configuring the RS485 port.
1.4 Pulsed Outputs
The Integra 1221 has Two Pulsed Outputs. One pulsed output is configurable
to active (kWh) or reactive (kVArh) energy. The second pulsed output is fixed to
3200imp/kWh.
2 Start Up Screens
The first screen lights up all display segments
and can be used as a display check.
The second screen indicates the firmware
installed in the unit and its build number.
Please note: The numbers on the product may
vary from those shown here.
The interface performs a self-test and indicates
the result if the test passes.
*After a short delay, the screen will display active energy measurements.
3 Measurements
The buttons operate as follows:
Selects the Power, Voltage, Current, Energy per phase and the
system values.
In Setup Mode, this is “Escape” (hold 3 sec) button.
Selects the Voltage and Current display screens.
In Setup Mode, this is the “Left” (press) button.
Select the Frequency and Power factor display screens.
In Setup Mode, this is the “Up” (press) button.
Select the Power display screens.
In Setup Mode, this is the “Down” (press) button.
Select the Energy display screens.
In Setup mode, this is the “Right” (press) or “Enter” (hold 3 sec) button.
4 Setup
To enter set up mode, hold the button for 3 seconds, until the password
screen appears.
The setup is password-protected so you must
enter the correct password (default ‘1000’) before
continuing.
If an incorrect password is entered, the display will
show:
PASS Err (Error).
To exit the set up menu, hold the button for 3 seconds, the measurement
screen will display.
4.1 Set up Entry Methods
Some menu items, such as Password and CT, require a four-digit number entry
while others, such as supply system, require selection from a number of menu
options.
4.1.1 Menu Option Selection
1. Use the and buttons to scroll through the different options of
the setup menu.
2. Hold the button for 3 seconds to confirm your selection.
3. If an item flashes, then it can be adjusted by the and buttons.
4. Having selected an option from the current layer, hold the button for
3 seconds to confirm your selection.
5. On completion of setting-up, hold the button for 3 seconds, the
measurement screen will then be restored.
4.1.2 Number Entry Procedure
When setting up the unit, some screens require the entering of a number. In
particular, on entry to the setting up section, a password must be entered. Digits
are set individually, from left to right. The procedure is as follows:
1. The current digit to be set flashes and then can be adjusted using the
and buttons.
2. Press the button to move right to the next digit.
3. After setting the last digit, hold the button for 3 seconds to save your
selection.
5 Setup Menu Structure
Set Comms
Set Address 001-247
Set Baud Rate 2400/4800/9600/19200/384000
Set Parity none/odd/even
Set Stop Bits 1 or 2
CT Configuration
Set maximum current that can be monitored according to CT in use.
PT
The PT option sets the Primary Voltage (PT1 100-500000V AC L-N
or 100-500000V AC L-L) and the Secondary Voltage (PT2 100-276V
AC L-N or 100-480 L-L) of the Voltage Transformer (PT) that may be
connected to the meter.
Note: The unit is able to measure from 57.7V AC L-N however
PT2 must be set from 100-276V AC L-N.
Set Pulse
Pulsed Output-Use this section to configure the Pulsed Output Type.
Units- kVArh (default); kWh.
Pulse Rate- Configure the number of pulses to relate to a defined
amount of Total Energy.
Pulse Duration- The energy monitored can be active or reactive and
the pulse width can be selected as 200, 100 or 60mS.
Set Demand
DIT (Demand Integration Time) - This sets the period (in minutes) in
which the Current and Power readings are integrated for maximum
demand measurement. The options are 0; 5; 8; 10; 15; 20; 30 or 60
minutes.
Demand Method- Within this menu, you are able to set whether the
demand is displayed using a sliding or fixed method
Set Time Backlight- The back light is a programmable time (in minutes) that
determines how long this remains on for before this goes into
standby.
Display Scroll - Within this menu, you can determine how long the
screen is displayed for before it scrolls to the next screen.
Set System
Sytem Type- The unit has a default setting of 3 Phase 4 Wire (3P4W).
Use this section to set the type of electrical system.
3P4W/3P3W/1P2W
CT Connections -The CT connections can be reversed through the
“Set Sys Cnct” menu, choosing between Forward (Frd) or Reversed
(Rev) depending on the system.
Set Password- Use this menu to create a custom 4 digit password.
Auto Scroll- Use this menu to determine whether you would like he
display to scroll through the various display screens.
Reset The meter provides a function to reset the maximum demand value
of current and power.
Energy/Demand/All
6 Specifications
6.1 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.
6.1.1 Voltage and Current
• Phase to Neutral Voltages 57.7-276V AC (L-N).
•Phase to Phase Voltages 100-480V AC (L-L).
• Percentage Total Voltage Harmonic Distortion (V %THD) for each Phase to
Neutral (not for 3P3W supplies).
• Percentage Total Voltage Harmonic Distortion (V% THD) between Phases (3
Phase supplies only).
• Current %THD for each Phase.
• Burden <15VA (nom 2VA)
• Self powered from any phase
6.1.2 Power factor and Frequency and Max. Demand
• Frequency in Hz
• Instantaneous power:
• Power 0-3600 MW
• Reactive power 0-3600 MVAr
• Volt-amps 0-3600 MVA
• Maximum Demand Power since last reset
• Power factor
• Maximum Neutral Demand Current, since the last reset (for 3P4W supplies
only)
6.1.3 Energy Measurements
• Imported/Exported active energy 0 to 9999999.9 kWh
• Imported/Exported reactive energy 0 to 9999999.9 kVArh
• Total active energy 0 to 9999999.9 kWh
• Total reactive energy 0 to 9999999.9 kVArh
6.2 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. Three current inputs in a single physical terminal (RJ12)
for connection of external CTs. Nominal rated input current 0.1A AC RMS.
6.3 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 distortion 2% up to 63rd harmonic
• Response time to step input 1s, typical, to >99% of final reading, at 50 Hz.
Warnings
During normal operation, voltages hazardous to life
may be present at some of the terminals of this unit.
At voltages below that specified in the Range of Use
the meter may shut down. However, voltages
hazardous to life may still be present at some of the
terminals of this unit.
Installation and servicing should be performed only by
qualified, properly trained personnel abiding by local
regulations.
Ensure all supplies are de-energised before attempting
connection or other procedures.
Terminals should not be user accessible after
installation and external installation provisions must
be sufficient to prevent hazards under fault conditions.
This unit is not intended to function as part of a system
providing the sole means of fault protection - good
engineering practice dictates that any critical function
be protected by at least two independent and diverse
means.
The unit does not have internal fuses therefore external
fuses must be used for protection and safety under
fault conditions.
Never open-circuit the secondary winding of an
energized current transformer.
This product should only be operated with the CT
secondary connections earthed.
If this equipment is used in a manner not specified by
the manufacturer, protection provided by the
equipment may be impaired.
Caution: Risk of
Electric Shock
