Trinity XPERT-PRO User manual

XPERT-PRO – Operational Manual
TRINITY
[1]
USER’S MANUAL
XPERT-PRO
Electrical Power Meter
This document contains the latest technical information about Xpert-pro which is a
micro-controller based Electrical Power Meter. The product Xpert-pro is
sophisticated electronic equipment, and the user is advised to read this User’s
Manual carefully before attempting to install or operate the equipment.
Trinity Energy Systems Pvt. Ltd.
Published on: 05/12/2019
Document Version: 1.0

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Warranty statement
Trinity warrants to the original retail purchaser of the Trinity product enclosed with this
limited warranty statement that the product, if purchased new and used in the India
conforms to the manufacturer’s specifications and will be free from defects in
workmanship and materials for a period of one year from the date of original
purchase, unless expressly stated otherwise by Trinity, in a written format.
Should your Trinity product prove defective during the warranty period, please bring
the product securely packaged in its original container or an equivalent, along with
proof of the date of original purchase, to our Trinity Dealer or Factory. You are
responsible for all costs (shipping, insurance, travel time) in getting the product to the
service location. Trinity will, at its option, repair or replace on an exchange basis the
defective unit, without charge for parts or labor. When warranty service involves the
exchange of the product or of a part, the item replaced becomes Trinity property. The
replacement unit may be new or refurbished to the Trinity standard of quality, and at
Trinity’s option, the replacement may be another model of like kind and quality.
Trinity’s liability for replacement of the covered product will not exceed the original
retail selling price of the covered product. Exchange or replacement products or parts
assume the remaining warranty period of the product covered by this limited warranty.
What This Warranty Does Not Cover:
This warranty does not apply to refurbished or reconditioned products. This warranty
covers only normal use in India. This warranty does not cover damage to the Trinity
product caused by parts or supplies not manufactured, distributed or certified by
Trinity. This warranty is not transferable. This warranty does not cover third party
parts, components or peripheral devices added to the Trinity product after its
shipment from Trinity. Trinity is not responsible for warranty service should the Trinity
label or logo or the rating label or serial number be removed or should the product fail
to be properly maintained or fail to function properly as a result of misuse, abuse,
improper installation, neglect, improper shipping, damage caused by disasters such
as fire, flood, and lightning, improper electrical current, interaction with non-Trinity
products, or service other than by an Trinity Authorized Service.
The warranty and remedy provided above are exclusive and in lieu of all other
express or implied warranties including, but not limited to, the implied
warranties of merchantability or fitness for a particular purpose. In the event,
the remedies above fail, Trinity’s entire liability shall be limited to a refund of
the price paid for the Trinity product covered by this limited warranty. Except
as provided in this written warranty, neither Trinity Energy Systems Pvt. Ltd.
nor its affiliates shall be liable for any loss, inconvenience, or damage,
including direct, special, incidental, or consequential damages, resulting from
the use or inability to use the Trinity product, whether resulting from breach of
warranty or any other legal theory.

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Contents
Introduction .............................................................................................................. 4
The Main features Available in this Model........................................................... 4
Technical Specifications...................................................................................... 6
Installation and Commissioning ............................................................................. 7
3P4W Mode Installation ...................................................................................... 7
3P3W Mode Installation ...................................................................................... 8
1P2W Mode Installation ...................................................................................... 9
Connection Scheme.......................................................................................... 10
Operational Details............................................................................................ 10
Programming Mode .............................................................................................. 11
Selecting Installation Type ................................................................................ 11
Setting CT Primary............................................................................................ 13
Setting CT Secondary ....................................................................................... 13
Setting Device ID along with Baud Rate for RS485 port ................................... 14
Setting K1 On, K1 Value and K1 Time for an Alarm Parameter ........................ 14
Setting K2 On, K2 Value and K2 Time for an Alarm Parameter ........................ 16
Auto scrolling the Run Mode pages .................................................................. 16
Setting Time to Run Hour and Load Run Hour ................................................. 17
Resetting Energy............................................................................................... 17
Resetting Demand Power ................................................................................. 18
Run Mode in 3P4W ........................................................................................... 19
Run Mode in 3P3W ........................................................................................... 23
Run Mode in 1P2W ........................................................................................... 23
Control Outputs...................................................................................................... 24
Relays for Alarm Action ..................................................................................... 24
Communication ...................................................................................................... 25
Modbus RTU on RS485 Port ............................................................................ 26
Appendix ........................................................................................................... 26

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Introduction
The electrical power meter, Xpert-pro is a micro-controller based unit which
measures various electrical parameters, and sequentially displays on a 128X64
backlit LCD. The meter has four LEDs in the front, one to calibrate energy (KWh),
one to indicate the status of RS485 communication and other two shows Status of
the Relay.
The unit is meant for use in three phase four wire/ three wire systems. In three phase
four wire LT systems, it requires four wires from R, Y, B & N, in addition to six wires
from the three current transformers mounted on the three phases. It thus uses the
three wattmeter method to arrive at the system KVA and KW. On the other hand, for
use in three phase three wire system, it requires three phases from the PT
secondary (usually 110 VAC) and only four wires from the HT current transformer
secondary of two phases. The KVA and KW are calculated by the two wattmeter
method.
The unit measures the three phase voltages, currents, frequency, power factors,
individual Harmonic data as Histogram including Total Harmonic Distortion as well as
individual current and voltage waveforms for all three phases. Based on these
inputs, the system KVA, KW and KWh can also be calculated.
For the correct operation of the unit, the only basic care required is to ensure that the
phase sequence of the three phases is R-Y-B and the polarity of the CT secondary is
correct.The S1 terminal in every CT will go to the M terminal of unit. Similarly, the
S2 end of the CT will go to the L terminal of the unit.
The unit is fully solid state and will give years of trouble-free service once installed
correctly.
The Main features Available in this Model
All readings are true RMS measurements
Site selectable 1A or 5A CT secondary
CT and PT Ratio site selectable
Measurement of all three voltages-phase to phase, phase to neutral, all
currents in three phases including frequency (Hz)
Measurement of three powers (KVA, KW and KVAR), three energies (KVAh,
KWh and KVARh) for both EB and DG.
Indication of system PF including individual PF in three phases at lead and lag
side
Demand Measurement - KVA or KW (Site selectable).
Individual Odd Harmonics up to 15th for voltage and current including THD
Odd Harmonic data as Histogram for each individual current and voltage

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Individual Current and Voltage Waveforms for each phase of three phases.
RS-485 port for connection to SCADA/EMS.RS-485 communication with
indication RX/TX LED.
KWh Energy Pulse output on the LED (1000 impulses/KWh basic).
All parameters with default accuracy class 1.0s
Two relay contacts for alarm/trip which are programmable for different
parameters including (Sliding) Demand powers (KW and KVA).
In ideal condition the back light will turn off after 5 min. And if any key is
pressed back light will on.

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Technical Specifications
Parameter
s
Type Name Statistics
INPUT
Supply Three Phases and Neutral of a 3P4W system / Three Phases of
a 3P3W system & Phases and Neutral of a 1P2W system
Voltage
Direct Voltage Input : 25 to 500V L-L, 25 to 300V L-N
PT Ratio : Site Selectable
Burden : 0.5VA
Current
Secondary Current Input : 5A or 1A (Site Selectable)
CT Ratio : Site Selectable
Range of Reading : 5 – 5000A
Burden : < 1.0VA
Overload : 5A CT →6A RMS Continuous
1A CT →1.2A RMS Continuous
Power Supply Auxiliary Supply : 80 - 270 VAC, 50-60 Hz.
OUT
PUT
Relay Two. Individually Field Programmable.
3A @ 230 VAC, Resistive Load
MEASUREMENT
True RMS Basic
Parameters
Voltage
(Volts L-N & L-L)
VL-N - Accuracy : 0.5% of Reading
VL-L - Accuracy : 1.0% of Reading
Current
(Amps IR, IY, IB) Accuracy : 0.25% of Reading
Line Frequency 45 to 65 Hz, Accuracy : 0.3% of Reading
Power
Active Power (P) Accuracy : 1% of Reading
(For IPFI>0.5)
Reactive Power (Q) Accuracy : 1.5% of Reading
(Between 0.5 Lag to 0.8 Lead)
Apparent Power (S) Accuracy : 1% of Reading
Power Factor
For Individual phases and System
Accuracy : 1.0% of Reading (IPFI≥0.5)
Range of Reading : 0.05 to 1.00 Lag/Lead
Energy
Total Active Energy
(KWh)
Range of Reading : 0 to 9999999.9
Accuracy : class 1.0S as per IS13779.
Total Apparent Energy
(KVAh)
Range of Reading : 0 to 9999999.9
Accuracy : 1.0% of Reading
Total Reactive Energy
(KVARh)
Range of Reading : 0 to 9999999.9
Accuracy : 1.5% of Reading
Power
Quality
Individual Wave form for each voltage and current
THD for each current and voltage in three phases
MISCELLANEOUS
Dimensi ons
Bezel 96 X 96 mm
Panel Cutout 90 X 90 mm
Depth of installation 55 mm
Display 128X64 LCD
Operating temp 10°C to 50°C
Weight 0.35 Kgs (Approx.)
Min. Operating Current 0.4% to 120% of CT primary
Comm. RS485 Modbus-RTU protocol
Calibration LED. Red color. 1000 impulses/unit(basic) for KWh

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Installation and Commissioning
The unit supports three types of electrical installation such as 3P4W/3P3W/1P2W.
According to user’s requirement, the three electrical installation types can be
selected either.
P4W Mode Installation
For Installation and Commissioning, proceed the following instructions.
1. Push the unit into the panel and mount it by using the clamps provided.
Connect the Auxiliary supply (80 VAC to 270 VAC) to the terminals marked P
and N.
2. Connect the three phases with the phase sequence being R-Y-B to the
terminals marked U1, U2 and U3 respectively. Make sure that the three
phases coming to the unit come through control fuses of 1.0 Amp rating. This
will protect the electronic inside from damage due to severe over voltages or
phase faults in the system.
3. Connect the neutral wire to the terminal marked U4.
4. Connect the two wires from the R-Phase CT to the terminals marked M1 and
L1 such that S1 from CT goes to M1 on the unit. Connect the two wires from
the Y-phase CT to the terminals marked M2 & L2 such that S1 from the Y-
phase CT goes to M2 on the unit. Connect the two wires from the B-phase CT
to the terminals marked M3 & L3 such that S1 from CT goes to M3 on the
unit.
5. Switch on the three phases supply as well as the auxiliary supply. The unit will
come alive and display such as Firmware Version, CT Ratio, Device ID and
Installation type and then, the unit enters into Run Mode displaying the first
page.
Communication LED
Dual color LED.
Data Receive – Green LED.
Data Transmit – Red LED.
Relay LED 2 Red Color for Relay ON Indication.

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6. The unit should be programmed for all the required parameters which are field
programmable and therefore, for selecting the various options supported,
refer Operational Details in next section.
7. Now, the unit is ready for operation.
P W Mode Installation
For Installation and Commissioning, proceed the following instructions.
1. Push the unit into the panel and mount using the clamps provided. Connect
the auxiliary supply (80 VAC to 270 VAC) to the terminal marked P and N.
2. Connect the three phases such as R-phase to the terminal marked U1, Y-
phase to the terminal marked U4 and B-phase to the terminal marked U3
respectively. Make sure that the three phases coming to the unit come
through control fuse of 1.0 rating.
3. Connect the two wires from R-phase CT to the terminal marked M1 & L1 such
that S1 from CT goes to M1. Connect the two wires from B-phase CT to the
terminal marked M3 & L3 such that S1 from the CT goes to M3 on the unit.
4. Switch on the three phases supply as well as the auxiliary supply. The unit will
come alive and display such as Firmware Version, CT Ratio, Device ID and
Installation Type and the unit then, enters into Run Mode displaying the first
page.
5. The unit should be programmed for all the required parameters which are field
programmable and therefore, for selecting the various options supported,
refer Operational Details in next section.
6. Now, the unit is ready for operation.

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1P2W Mode Installation
For Installation and Commissioning, proceed the following instructions.
1. Push the unit into the panel and mount using the clamps provided. Connect
the auxiliary supply (80 VAC to 270 VAC) to the terminal marked P and N.
2. Connect the R-Phase (Single phase) to the terminals marked U1. Make sure
that the phase coming to the unit comes through control fuses of 1.0 Amp
rating. This will protect the electronic inside from damage due to severe over
voltages or phase faults in the system.
3. Connect the neutral wire to the terminal marked U4.
4. Connect the two wires from the R-Phase CT to the terminals marked M1 and
L1 such that S1 from CT goes to M1 on the unit.
5. Switch on the single phases supply as well as the auxiliary supply. The unit
will come alive and display such as Firmware Version, CT Ratio, Device ID
and Installation type and then, the unit enters into Run Mode displaying the
first page.
6. The unit should be programmed for all the required parameters which are field
programmable and therefore, for selecting the various options supported,
refer Operational Details in next section.
7. Now, the unit is ready for operation.

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Connection Scheme
Operational Details
The electrical power meter, Xpert-Pro is a versatile meter with all the features
needed to implement for a robust electrical power system. It can be configured to
suit various electrical controls. This is achieved by making as many parameters field
programmable, as possible. In order to configure any parameter and, the parameters
measured and calculated by the meter display in two modes:
1. Programming Mode
2. Run Mode.
After supplying power (80 VAC to 270 VAC) the unit displays immediately power
receiving information such as Firmware version, CT Ratio, Device ID and Installation
type on LCD screen and then, the display comes into the first page of Run Mode by
default such as shown below.
Now, the unit can be operated by using the keys provided such as , and
for both Programming Mode and Run Mode.
Vry=408.4
Vyb=412.7
Vbr=415.2
49.32 Hz

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Programming Mode
The unit is easy user interface for all the field programmable parameters by
pressing , and keys provided. In order to program for all the parameters,
the user should precede upto 18 parameters with the following displays.
Selecting Demand On and Demand Window
DEMAND ON can be selected for the calculation of Demand Power. The unit
supports Demand based on either KVA or KW, for an integration period of 30/15
minutes.
To retrieve the DEMAND ON, precede the following instructions.
In Run Mode, press key for about five seconds and then the unit displays the
first programmable parameter, DEMAND ON.
1. Press key again. Immediately ‘P’ starts blinking which shows that the
parameter can now be selected. Select the DEMAND ON by pressing and
keys according to your desire and then press key to save the
parameter.
2. Press key to retrieve the next programmable parameter, DEMAND
WINDOW and then set as above parameter for the following display.
3. After setting the parameter, the unit will reset and return into Run Mode. In
case, your setting is incomplete, precede as above steps 1 and 2.
Selecting Installation Type
The unit supports three types of electrical installation such as 3P4W, 3P3W and
1P2W. So the user should select to either 3P4W or 3P3W or 1P2W accordingly.
To select the Installation Type, precede the following instruction.
1. In Run Mode, press key for about five seconds and then the unit will
display the first programmable parameter, DEMAND ON. Press keys to
retrieve the programmable parameter, INSTALLATION TYPE such as shown
below.
DEMAND WINDOW
30
DEMAND ON
KW

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2. Press key again. Immediately ‘P’ starts blinking which shows that the
parameter can now be selected. Select the Installation Type to either 3P4W or
3P3W or 1P2W by pressing and keys according to your desire and
then press key so as to save the parameter. However, the unit will reset
and return into Run Mode.
3. In case, your setting is incomplete, precede as above step 1 and 2.
Selecting PT Gain
The PT Gain is the ratio of PT Primary and PT Secondary which is also selectable at
site. The PT Gain should be selected so as to give the actual voltage in your PT
operated meter with the following table.
PT
Primary
PT
Secondary
PT Gain
(PT Ratio)
No multiply factor 1
3300 110 30
6600 110 60
11000 110 100
22000 110 200
33000 110 300
66000 110 600
132000 110 1200
415 110 3.7727
440 110 4.0000
690 110 6.2727
To select the PT Gain, precede the following instruction
1. In Run Mode, press key for about five seconds and then the unit displays
the first programmable parameter, DEMAND ON. Press keys to retrieve
the programmable parameter, PT GAIN such as shown below.
2. Press key again. Immediately ‘P’ starts blinking which shows that the
parameter can now be selected. Select the PT GAIN by pressing and
keys according to your desire and then press key so to save the
parameter. However, the unit will reset and return into Run Mode.
PT GAIN
1200
INST.
3P4W

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3. In case, your setting is incomplete, precede as above steps 1 and 2.
Setting CT Primary
CT Primary should be selected at site so as to give the actual current for CT
operated meters. The CT Primary can be selected from 5 to 5000.
To retrieve the CT Primary, precede the following instructions.
1. In Run Mode, press key for about five seconds and then the unit displays
the first programmable parameter, DEMAND ON. Press keys several
times to retrieve the programmable parameter, CT PRIMARY such as shown
below.
2. Press key again. Immediately ‘P’ starts blinking which shows that the
parameter can now be selected. Select the CT PRIMARY by pressing and
keys according to your desire and then press key to save the
parameter. However, the unit will reset and return into Run Mode.
3. In case, your setting is incomplete, precede as above steps 1 and 2.
Setting CT Secondary
CT Secondary should be selected at site so as to give the actual current for CT
operated meters. CT Secondary can be selected to either 1 or 5.
To retrieve the CT Secondary, precede the following instructions.
1. In Run Mode, press key for about five seconds and then the unit displays
the first programmable parameter, DEMAND ON. Press keys several
times to retrieve the programmable parameter, CT Secondary such as shown
below.
2. Press key again. Immediately ‘P’ starts blinking which shows that the
parameter can now be selected. Select the CT SECONDARY by pressing
T SE
5
T PRIMARY
225

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and keys according to your desire and then press key to save the
parameter. However, the unit will reset and return into Run Mode.
3. In case, your setting is incomplete, precede as above steps 1 and 2.
Setting Device ID along with Baud Rate for RS485 port
The unit supports Modbus RTU on RS485 communication port for downloading the
live data at site and the Device ID should therefore be set starting from 1 to 255.
According to your requirement the Baud Rate can also be selected to 4800 or 9600
or 19200.
To retrieve the DEVICE ID, precede the following instructions.
1. In Run Mode, press key for about five seconds and then the unit displays
the first programmable parameter, DEMAND ON. Press keys several
times to retrieve the programmable parameter, DEVICE ID such as shown
below.
2. Press key again. Immediately ‘P’ starts blinking which shows that the
parameter can now be selected. Select the DEVICE ID by pressing and
keys according to your desire and then press key to save the
parameter.
3. Press key to retrieve the next programmable parameter, BAUD RATE and
then set as above parameter for the following display.
4. After setting, the unit will reset and return into Run Mode. In case, your setting
is incomplete, proceed as above steps 1 and 2.
Setting K1 On, K1 Value and K1 Time for an Alarm Parameter
The meter has two relays for an alarm contacts. The relay contact is rated 3A @ 230
VAC. The contact is normally open where the operation of the relay contact can be
programmable at site. For this specification, there are three parameters to be
programmed such as shown below:
a. The Alarm Parameter (K1 ON) for which the alarm has to be generated
BAUD RATE
9600
DEVI E ID
255

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should be selected from any one of the following: Demand, Avg. Volt, Avg.
Amps, KVA, KW, KVAR, and PF.
b. The Alarm Values (K1 Value) which are programmable from 5 to 5000 should
be selected for which the alarm parameter has to be generated. In case of PF,
the Alarm value can be set from 60 to 100.
c. The Time Delay (K1 Time) for a selected alarm parameter should be also set
from 5 seconds to 180 seconds. In case of Demand, it will be fix 2 seconds.
Understanding Hysteresis
There is a time delay involved in switching ON and OFF the relay. Also, if there is no
hysteresis in the switching operation of the relay, there is bound to be frequent
switching of the relay near the alarm value. To avoid this, a band of 5 % is added to
the programmed value, which acts when the time to switch off the relay comes .e.g.
Say, the parameter is set to KW; the value for operating the relay is programmed to
100 and the time delay is set to 30 seconds. The relay will, thus operate when the
KW crosses 100, and stays more than 100 for 30 seconds continuously.
The relay will now open when the KW falls below 95, and stays that way for 30
seconds continuously.
Thus, there is a time delay involved, and also a 5% band. However, since Demand is
already an integrated parameter, there is only 2 seconds delay involved when the
alarm contact is set for Demand.
In case of PF, the hysteresis is not there. However, PF has a multiplying factor (MF)
of 100. Thus, a PF value of 0.98 is set as 98. All this is summarized below:
Sr.
No.
Alarm
parameter
Relay switches
on at
Relay switches off at
Settable Time
Delay
1. Avg. Volts >Set value <95 % of set value 005 to 180 sec.
2. Avg. Amps. >Set value <95 % of set value 005 to 180 sec.
3. KVA >Set value <95 % of set value 005 to 180 sec.
4. KW >Set value <95 % of set value 005 to 180 sec.
5. KVAR >Set value <95 % of set value 005 to 180 sec.
6. Demands >Set value <95 % of set value 2 sec.(fixed)
7. PF <Set value >Set value 005 to 180 sec.
To retrieve the K1 On, K1 Value and K1 Time, precede the following instructions.
1. In Run Mode, press key for about five seconds and then the unit displays
the first programmable parameter, DEMAND ON. Press keys several
times to retrieve the programmable parameter, K1 ON such as shown below.

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2. Press key again. Immediately ‘P’ starts blinking which shows that the
parameter can now be selected. Select the K1 ON by pressing and
keys according to your desired parameter and then press key to save the
parameter.
3. Press key to retrieve the next programmable parameter, K1 VALUE and
then set as above parameter for the following display.
4. After setting K1 VALUE, press key to retrieve the next programmable
parameter, K1 TIME and then set as above parameter for the following
display.
5. To retrieve to the next desired parameter, K2 ON, press key so as to set
as before. Or else, key for about five seconds to return into Run Mode.
Setting K2 On, K2 Value and K2 Time for an Alarm Parameter
To set K2 ON, K2 VALUE and K2 TIME, proceed as before K1 ON, K1 VALUE and
K1 TIME.
Auto scrolling the Run Mode pages
Scroll second is settable from 5 to 12 seconds. The unit will either continue to display
the parameter steadily or scroll automatically. If the SCROLL SECOND is set to
Zero, the unit will be in FREEZE mode, and will not scroll automatically.
In case, the scroll seconds value is set from 5 to 12 seconds, the unit will
automatically scroll to the next pages in Run Mode for every specified second.
To scroll the Run Mode pages, precede the following instruction.
1. In Run Mode, press key for about five seconds and then the unit displays
the first programmable parameter, DEMAND ON. Press key several times
K1 TIME
45
K1 VALUE
2500
K1 ON
KVA

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to retrieve the programmable parameter, AUTOSCROLL SECOND such as
shown below.
2. Press key again. Immediately ‘P’ starts blinking which shows that the
parameter can now be set. Set the SCROLL SECOND according to your
desire by pressing or keys and then press key to save the
parameter.
3. To retrieve to the next desired parameters, press key so as to set as
before. Or else, press key for about five seconds to return into Run Mode.
Setting Time to Run Hour and Load Run Hour
The unit supports two types of times: (i) Run Hour (ii) Load Run Hour. User should
select one of these options. Run Hour is the time to be counted since the unit
receives power. Load Run Hour is the time to be counted since the Load receives
energy.
To set this time, follow the instructions below:
1. In Run Mode, press key for about five seconds and then the unit displays
the first programmable parameter, DEMAND ON. Press keys several
times to retrieve the programmable parameter, Time such as shown below.
2. Press key again. Immediately ‘P’ starts blinking which shows that the
parameter can now be selected. Select the TIME by pressing and
keys according to your desire and then press key to save the parameter.
However, the unit will reset and return into Run Mode.
3. In case, your setting is incomplete, precede as above steps 1 and 2.
Resetting Energy
The three energies such as KWh, KVAh and KVARh for both EB and DG can be
reset. In case, RESET ENERGY is set to YES, for all the values of energies in Run
Mode will be reset to zeroes.
To select the RESET ENERGY, precede the following instruction.
S OROLL SE
12
TIME
LoadRunhr

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1. In Run Mode, press key for about five seconds and then the unit displays
the first programmable parameter, DEMAND ON. Press key several times
to retrieve the programmable parameter, RESET ENERGY such as shown
below.
2. Press key again. Immediately ‘P’ starts blinking which shows that the
parameter can now be selected. Set the RESET ENERGY to YES by pressing
or keys and then press key to reset all energy parameter.
3. To retrieve to the next desired parameters, press key so as to set as
before. Or else, press key for about five seconds to return into Run Mode.
Resetting Demand Power
Both KW_D and KVA_D can be reset with their maximum Demand Power (MAX
DMD). In case, Demand Power is set to YES, both the Demand Powers including
Maximum Demand will be replaced by zeroes in Run Mode.
To select the Reset Demand, precede the following instructions.
1. In Run Mode, press key for about five seconds and then the unit will
display the first programmable parameter, DEMAND ON. Press key
several times to retrieve the programmable parameter, RESET DEMAND
such as shown below.
2. Press key again. Immediately ‘P’ starts blinking which shows that the
parameter can now be selected. Set RESET DEMAND to YES by pressing
or keys and then press key to reset all Demand parameter.
3. To retrieve to the next desired parameters, press key so as to set as
before. Or else, press key for about five seconds to return into Run Mode
If your setting is completed.
RESET
DEMAND
YES?
RESET
ENERGY
YES?

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Run Mode
In the run mode, the various parameters calculated by the meter display on different
pages with 128X64 LCD backlit and are also true rms measurement. However, all
the Power values displayed will auto scale to Mega from Kilo when the KVA value
crosses 10,000. e.g., KVA≥10000.0, it will show as 10.00 MVA.
There are 30 pages in 3P4W, 22 pages in 3P3W, and 15 pages in 1P2W with its
individual and system values in three phases.
Run Mode in P4W
In case, the pages are frozen, each page can be altered by pressing and
keys so as to display such as below pages.
The first page shows phase to phase voltage in three phases with system frequency.
In case, PT ratio >10.0, the voltages will auto scale to KV.
The second page shows R-phase, Y-phase and B-phase current in three phases.
The third page shows the individual PF in R-phase, Y-phase and B-phase with
lagging PF. In case of leading PF, the unit will show “LD” sign for all three individual
phases.
PF
R 0.797 LG
Y 0.784 LG
B 0.813 LG
Ir=29.18
Iy=29.24
Ib=32.21
Vry=408.4
Vyb=413.9
Vbr=415.3
49.59 Hz

XPERT-PRO – Operational Manual
TRINITY
[20]
The fourth page shows the three powers such as KVA, KW and KVAR including
system PF to lag side.
The fifth page shows both Apparent Energy (KVAh) and Active energy (KWh).
The sixth page shows Reactive Energy (KVARh) and time for EB.
The seventh page shows Apparent Energy (KVAh) and Active energy (KWh) for DG.
The eighth page shows Reactive Energy (KVARh) and time for DG.
DG KVArh
4.40
TDG
00000:05:10
DG KVAh
5.09
DG KWh
2.42
KVAh
35.09
KWh
29.42
KVA=21.61
KW=17.24
KVAr=13.09
PF=0.796 LG
KVArh
24.40
TEB
00000:15:50