Lightstar KDX-300 User manual

KDX-300
Clear Large
LCD display
kwh
RS-485
Communication
MAX
Max. value
automatically saved
SIZE
INSTRUCTION MANUAL
(FULL VERSION)
Consumed Energy
Generated Energy
Compact size
(96x96mm)

Contents Page.1
6. Communication
Page.22
Page.22
Page.22
Page.23
6.4 Data Map
6.1 MODBUS Communication specification
6.3 Function Code
6.2 Modbus RTU Protocol
4.2 Default value
4.3 Conversion table for decimal point and unit
4. Setting method
Page.6
Page.7
Page.7
4.1 Setting
5.2 Display mode
5. Mode description
Page.10
Page.11
Page.15
Page.17
Page.19
5.5 Display Overview
5.3 Setting mode
5.4 Harmonic mode
5.1 Display item per page
3. Configuration
Page.5
Page.5
Page.5
Page.5
3.2 Key
3.1 LED
3.3 LCD
3.4 Terminals
2. Connection method
Page.42.1 Power, PT, CT connection
1.2 Dimensions
1. General Introduction
1.1 General
1.3 Specification
Page.2
Page.2
Page.3
Page.3
1.4 Function and accuracy

Safety warning
1.2 Dimensions
(1) During installation
Please be advised to avoid following severe conditions or equip with appropriate protection device in order to prevent
malfunctions.
Exposed to high electromagnetic field.
Located near circuit breaker, inverter, motor controller or frequently turned on/off power sources.
High temperature area, direct sunlight, chemical contaminated area, excessive vibration or excessive humidity.
(2) During cabling
Earthing point shall be located near this device as close as possible.
Please be advised to segregate power cable and control cable.
Otherwise, surge protection device shall be used at appropriate location.
Prior to cabling, be sure to check the designed aux power and connection diagram.
1.1 General
Chapter_1. General Introduction Page.2
Function
Features
Safety warnings must be read and understood before the instrument is used.
KDX-300 can measure/display electric data of the system and transmit data via RS-485 communication.
This can measure voltage, current, power, energy, power factor, frequency, phase angle, harmonics.
● Remote monitoring can be supported by RS-485 communication.
● Easily recognized display with various electric data as per pages
● Harmonics and phase angle can be displayed.
● Compact size with DIN 96 x 96
Unit : mm
91.5±0
1
91.5±0
1
50
6
18-M3.5 BOLT
90.5
90.5
99
100
100

Chapter_1. General Introduction Page.3
1.3 Specification
1.4 Function and accuracy
Line to line 40 ~ 700V
0.05 ~ 6A
±0.200~1.000
45 ~ 65Hz
Panel mounted
AC90V ~ 260V(50/60Hz), DC 110V
0~55℃
20~80%
Burst, Level 4 (IEC 61000-4-4)
Voltage(1.2㎲/50㎲, 5kV), Current(8㎲/20㎲)(IEC 60255-5)
±8kV(Air), ±4kV(Contact)(IEC 61000-4-2)
CE: 0.15~0.5MHz:79(66)dBuV, 0.5~30MHz:73(60)dBuV(KN22)
RE: 30~230MHz:40dBuV/m, 230~1000MHz:47dBuV/m(KN22)
10V/m(IEC 61000-4-3)
1P2W, 1P3W, 3P3W, 3P4W
RS-485 multi-drop 2wire (MODBUS RTU)
Function
Phase voltage
Line to line voltage
Current
Current load rate
Total power
Power per phase
Total reactive power
Reactive power per phase
Total apparent power
Apparent power per phase
Energy
Reverse Energy
Reactive energy
Reverse reactive energy
Frequency
Phase angle
Line to line angle
Current angle
Total power factor
Power factor per phase
Voltage THD
Current THD
Voltage Harmonic
Current Harmonic
Voltage
Line to line voltage
Current
Total power
Category
Voltage
Current
Power
Energy
Angle
Frequency
Power factor
T H D
Harmonic
Max value
Detail
V1,V2,V3
V12,V23,V31
I1,I2,I3
I1,I2,I3
W
W1,W2,W3
Var
Var1,Var2,Var3
VA
VA1,VA2,VA3
Wh_p
Wh_n
Varh_p
Varh_n
Frequency(Hz)
∠V12,∠V23,∠V31
∠V1,∠V2,∠V3
∠I1,∠I2,∠I3
PF
PF1,PF2,PF3
V1,V2,V3 THD
I1,I2,I3 THD
V1,V2,V3 Harmonic to 32nd order
I1,I2,I3 Harmonic to 32nd order
max V1, max V2, max V3
max V12, max V21, max V31
max I1, max I2, max I3
max W
Accuracy
±(0.2% of rdg + 0.02% of FS)
±(0.2% of rdg + 0.02% of FS)
Class 0.5 as per IEC 62053-22
Class 1.0 as per IEC 62053-24
Class 0.5 as per IEC 62053-22
Class 0.5 as per IEC 62053-22
Class 1.0 as per IEC 62053-24
±0.02Hz
±(0.5% of rdg +0.5°)
±(0.5% of rdg +0.5°)
-
-
-
-
-
-
-
-
Burst immunity test
Surge impulse test
Electrostatic discharge immunity test
Radiated radio-frequency immunity test
Connection method
Communication
Type
Operating power
Operating temperature
Operating humidity
Less than ‘2,000m above sea level’ without vibrations or shocks
Operating condition
Current
Power Factor
Frequency
Voltage
Radio disturbance test

Chapter_2. Connection method Page.4
2.1 Power, PT, CT connection
(without PT) (without PT)

Chapter_3. Configuration Page.5
LED
KEY
LCD
3.2 Key
(1) Key usage
3.1 LED
Setting mode
Key
KEY
LCD
1S
1L
2S
2L
3S
3L
A
B
G
S1
S2
G
P1
P2
P3
P0
KDX-300
PT Input AC 40 ~ 500 V
CT Input 0.1 ~6A
Source AC 90~260V, DC 110V
Panel Power Meter
DIsplay mode
page down
page up
Page down
Page up
Harmonic mode
Page down
Page up
Switch to basic mode
3.3 LCD
- Clear large LCD display with white backlight.
3.4 Terminals
Terminals
S1, S2, G
P1, P2, P3, P0
1S, 1L, 2S, 2L, 3S, 3L
A+, B-, SG
Usage
Aux. power / Earthing
Voltage input
Current input
RS-485 communication (to PC)
This device is equipped with 5 LED on the front top, which help to recognize power consumption easily.
Return to first page.
Or switch to setting mode
with holding 2 sec
Set-up ready
Set-up complete
Increase value.
Or rapid increase with holding 2 sec.
Decrease value.
Or rapid decrease with holding 2 sec.
Tap down(19>15>12>8>5>1 page)
Tap up(1>5>8>12>15>19 page) Tap up(1>17 page)
Tap down(17>1 page)

Chapter_4. Setting method Page.6
4.1 Setting
connection method > PT ratio > CT ratio > Communication ID & Adress > Max value reset -Energy reset
> All setting reset > backlight > Firmware information > Frequency
● Button function
- ◎ : enter to setting mode with holding 2 sec or finish setting mode.
- < , > : Choose setting page
- ∧, ∨ : Adjust setting value
● Setting procedure
1) connection method
Choose connection method from 3P3W, 3P4W, 1P2W, 1P3W
2) PT ratio
Input ratio for primary and secondary
Primary value can be set by the sequence as below.
Decimal point and unit > 1000 digit > 10 digit > 1 digit
Decimal point and unit can be chosen among (0.0V / 0V / 0,0kV/ 0kV)
Secondary value can be 190V(3P4W) or 110V(3P3W) (Refer to Page 11 for set up mode)
3) CT Ratio
Default value is 5/5A and setting range will be 5 ~ 6000A (56 kinds)
4) Communication ID & speed
Setting ID and speed(9600/14400/19200bps) for RS-485 communication.
5) Max value / Energy / All Setting reset
Reset max value or energy.
All setting reset includes max value and energy.
6) Back light
Can choose 3 options (Automatically off after 60 seconds on / ON / OFF)
7) Firmware information
This page can not be modified manually.
8)Frequency
Choose frequency according to the condition (50Hz/60Hz)

4.2 Default value
Page.7
Default value
- Decimal point of Power, Energy
+ If positive Energy exceed 9 digit, it will be reset as '0'
- If negative energy exceed 8 digit, it will be reset as '0'
4.3 Conversion table for decimal point and unit
- Decimal point and unit for Voltage
- Decimal point and unit for Current
5
10~50
60~500
600~6000
5.000A (3rd decimal point)
50.00A (2nd decimal point)
500.0A (1st decimal point)
6000A (Without decimal point)
Primary Current How to display
Primary voltage 110V
110.0V
11.0kV
11.00kV
190V
190.0V
11.4kV
11.40kV
11.40kV
380V
380.0V
380.0V
22.0kV
22.00kV
440V
440.0V
22.9kV
22.90kV
3.30kV
3.300kV
66.0kV
66.00kV
6.60kV
6.600kV
154kV
154.0kV
7.2kV
7.200kV
22.90kV
- Decimal point and unit for frequency, power factor, phase, harmonics
Phase angle
60.00 (2nd decimal point)
100.0 (1st decimal point)
120.0 (1st decimal point)
Hz
%
%
Decimal point Unit
3Φ3W voltage
3Φ4W voltage
Primary voltage
3Φ3W voltage
3Φ4W voltage
※ Secondary current 5A
100.0 (1st decimal point, excluding 1st order)
∠
Chapter_4. Setting method
Connection method : 3P4W
PT ratio : 190:190 (Direct)
CT ratio : 5:5
Backlight : Automatically off after 60 seconds on
RS-485 communistion : 255 (ID), 9600bps
Frequency : 60Hz
Frequency
Power factor
Harmonic

Page.8
Chapter_4. Setting method
5
10
15
20
25
30
40
50
60
70
75
80
90
100
120
125
130
140
150
160
170
175
180
200
225
240
250
300
350
400
450
500
600
700
750
800
900
1000
1200
1250
1300
1400
1500
1600
1700
1750
1800
2000
2500
3000
3200
3500
3600
4000
5000
6000
CT/PT Ratio 380 440 3.30k 6.60k 7.20k 11.0k 11.4k 22.0k 22.9k 66.0k 154k
.000kW .00kW
.0kW
.00kW
.0kW
kW
kW
kW
.00MW
.00MW
.00MW
MW
.0MW
kW
.00MW
3Φ3W

Page.9
Chapter_4. Setting method
CT/PT Ratio
5
10
15
20
25
30
40
50
60
70
75
80
90
100
120
125
130
140
150
160
170
175
180
200
225
240
250
300
350
400
450
500
600
700
750
800
900
1000
1200
1250
1300
1400
1500
1600
1700
1750
1800
2000
2500
3000
3200
3500
3600
4000
5000
6000
3Φ4W
190 380 11.4k 22.9k
- Decimal point and Unit
.000kW -> 3rd decimal point, Unit: kW
.00kW -> 2nd decimal point, Unit: kW
.0kW -> 1st decimal point, Unit: kW
kW -> Without decimal point, Unit: kW
.00MW -> 2nd decimal point, Unit: MW
.0MW -> 1st decimal point, Unit: MW
MW -> Without decimal point, Unit: MW
.000kW
kW
.00kW
.0kW
.0kW
kW
.00MW
.0MW

Chapter_5. Mode description Page.10
5.1 Display item per page
page
01
02
03
04
05
06
07
08
09
1 0
page
11
12
13
14
15
16
17
18
19
20
21
page
01
02
03~16
page
17
18
19~32
Setting mode
page
01
02
03
04
05
CT Ratio Setting
page
06
07
08
09
10
Display Item
Display Item Display Item
Display Item Display Item
Display Item
Phase active power / Total active power
Phase amperent power / Total amperent power
Phase reactive power / Total reactive power
Phase voltage / Frequency
Line-to-line voltage / Frequency
Phase power factor / Total power factor
Current loadrate / Zero phase current
Normal active energy
Reverse active energy
Normal reactive energy
Phase voltage THD
Reverse reactive energy
Phase voltage maximum value
Line-to-line voltage maximum value
Current loadrate maximum value
Total power maximum value
Voltage phase angle
Current phase angle
Voltage line to line phase angle
R phase voltage, current, active power
S phase voltage, current, active power
T phase voltage, current, active power
Basic mode Functions
Harmonic mode Functions
Phase voltage harmonic 1st order value
Phase voltage harmonic 2nd~15th order value
Phase current THD
Phase current harmonic 1st order value
Phase current harmonic 2nd~15th order value
Connection Method setting Reset - Active energy, reactive energy
Reset - All value
Backlight setting
Frequency setting
Firmware information
PT Ratio Setting
Communication setting
Reset - V, A, W Max value

5.2 Display mode
Display power metering values and status
Page.11
Chapter_5. Mode description
Phase Voltage and Frequency
Line to line Voltage and Frequency
Values referring CT ratio
100% in graph if secondary current is 5A
※ CT ratio can be adjust in setting mode
※ Decimal point and unit can be varied by PT ratio
(Refer to decimal point/ unit table)
Phase current and circular graph
※ Lead : lag :
Phase power factor and average power factor
※Decimal point and unit can be varied by CT/PT ratio
Phase active power and total active power
PAGE.2
PAGE.3
PAGE.1
PAGE.4
PAGE.5
Values referring PT ratio
* PT ratio can be adjusted in setting mode.
* Decimal point and unit can be varied by PT ratio.
(Refer to decimal point/ unit table)
Values referring PT ratio
※ PT ratio can be adjusted in setting mode.
※ Decimal point and unit can be varied by PT ratio.
(Refer to decimal point/ unit table)

PAGE.6
PAGE.7
PAGE.8
PAGE.9
PAGE.10
PAGE.11
※Decimal point and unit can be varied by CT/PT ratio
Page.12
Phase reactive power and total reactive power
※Decimal point and unit can be varied by CT/PT ratio
Phase apparent power and total apparent power
Displayed max. 9 digits
※Decimal point and unit can be varied by CT/PT ratio
+Normal active energy
Displayed max. 8 digits
※ Decimal point and unit can be varied by CT/PT ratio
-Reverse active energy
Displayed max. 8 digits
※Decimal point and unit can be varied by CT/PT ratio
+Reverse reactive energy
Displayed max. 8 digits
※Decimal point and unit can be varied by CT/PT ratio
-Reverse reactive energy
※Lead : lag :
Chapter_5. Mode description

Page.13
Voltage / current / circular graph / active power for R phase
R phase information
Voltage / current / circular graph / active power for S phase
S phase information
Voltage / current / circular graph / active power for T phase
T phase information
※ Max.value can be reset in setting mode (Page 5)
Phase voltage Max.value
※ Max.value can be reset in setting mode (Page 5)
Line to line voltage Max.value
PAGE.12
PAGE.13
PAGE.14
PAGE.15
PAGE.16
Chapter_5. Mode description

Page.14
※Max.value can be reset in setting mode (Page 5)
Phase current Max.value
※Max.value can be reset in setting mode (Page 5)
Active power Max.value
R phase angle
S phase angle
T phase angle
Voltage phase angle
RS phase angle
ST phase angle
TR phase angle
Voltage line to line angle
R phase angle
S phase angle
T phase angle
Current phase angle
PAGE.17
PAGE.18
PAGE.19
PAGE.21
PAGE.20
Chapter_5. Mode description

Page.15
5.3 Setting mode
In order to set and check the KDX-3 Series’s operating condition, hold the third key(●) for 2 seconds and switch to
setting mode. In settings mode, use the ◀, ▶ keys to check information and press the ●key to set and complete.
You can easily check your current location using page number.
① Using ● key, setting to be ready.
② Using ▲,▼ key, choose connection method.
③ Using ● key, setting value to be saved.
※ Setting range : 3P3, 3P4 ※ Default value : 3P4
① In setting mode, move to PT voltage setting page.
② Using ● key, setting to be ready.
Example) In case 3300/110V PT applied, primary
value can be 3300V/3.300kV/3.30kV
③ Using ▲,▼ key, choose the decimal point.
Or using ◀,▶ key, move to the digit to be changed
Chosen digit can be changed by using ▲,▼ key.
④ Using ● key, setting value to be saved.
PT Primary voltage setting
PAGE.2
PAGE.1
PAGE.3
PAGE.4
PAGE.5
1st
2nd
Connection Method setting
※ Setting range : [5 - 6000] ※ Default value : [5]
① In setting mode, move to CT current setting page.
② Using ● key, setting to be ready.
③ Using ▲,▼ key, choose CT current value.
④ Using ● key, setting value to be saved.
CT Ratio setting
Example) Set 100 for CT 100/5
※ Address setting range : [0 - 255]
※ Default value : Address(255), Speed(9600)
※ Communication speed : [9600,14400,19600]
① In setting mode, move to communication setting page.
② Using ● key, setting to be ready.
③ Using ▲,▼ key, choose setting value, and save with ● key.
Communication setting
※ Setting range : YES, NO ※ Default value : NO
① In setting mode, move to max value reset page.
② Using ● key, setting to be ready.
③ Using ▲,▼ key, choose ‘YES’ or ‘NO’.
④ Pushing ● key, after choose ‘YES’ , Max A,V,W value to be reset
and move to first page.
Reset - V, A, W Max value
Chapter_5. Mode description

Page.16
PAGE.6
PAGE.7
PAGE.8
PAGE.9
PAGE.10
※ Setting range : YES, NO ※ Default value : NO
※ Caution : Wh, varh(Integrated Value) to be saved automatically every 30 min.
And this value can be lost if power is not supplied
① In setting mode, move to energy reset page.
② Using ● key, setting to be ready.
③ Using ▲,▼ key, choose ‘YES’ or ‘NO’.
④ Pushing ● key, after choose ‘YES’ , Wh and varh to be reset and move
to first page.
Reset - Active energy, reactive energy
※ Setting range : YES, NO ※ Default value : NO
① In setting mode, move to all reset page.
② Using ● key, setting to be ready.
③ Using ▲,▼ key, choose ‘YES’ or ‘NO’.
④ Pushing ● key, after choose ‘YES’ , all value to be reset and move
to first page.
Reset - All value
※ Setting range : 60[Automatically], ON,OFF ※ Default value : 60
※ Setting range : 50/60Hz ※ Default value : 60Hz
① In setting mode, move to backlight setting page.
② Using ● key, setting to be ready.
③ Using ▲,▼ key, choose setting value.
④ Using ● key, setting value to be saved.
Backlight setting
① In setting mode, move to frequency setting page.
② Using ● key, setting to be ready.
③ Using ▲,▼ key, choose frequency, and save with ● key.
Frequency setting
① In setting mode, move to firmware information page.
② This page can not be modified manually.
③ This page show the information of firmware.
Firmware information
Chapter_5. Mode description

Page.17
5.4 Harmonic mode
Harmonics can be measured to 32nd order and transmitted by communication. But on device,
it can be displayed to 15th order only .
Press ▼ + ▲ at the same time you may enter to harmonic mode, And press ● key, you may return to normal mode
PAGE.1
R Phase voltage THD
S Phase voltage THD
T Phase voltage THD
Unit : %
Phase voltage THD
PAGE.2
Voltage harmonic 1st Order
PAGE.4
Voltage harmonic for each phase
PAGE.16
Voltage harmonic for each phase
R phase Voltage harmonic 1st order
S phase Voltage harmonic 1st order
T phase Voltage harmonic 1st order
Unit : V
R phase Voltage harmonic 3rd order
S phase Voltage harmonic 3rd order
T phase Voltage harmonic 3rd order
Unit :%
R phase Voltage harmonic 15th order
S phase Voltage harmonic 15thd order
T phase Voltage harmonic 15th order
Unit :%
※ Page 3, 5~15 : Same configuration as Page 4
Chapter_5. Mode description

Page.18
PAGE.17
R Phase current THD
S Phase current THD
T Phase current THD
Unit: %
Phase current THD
PAGE.18
Current harmonic 1st Order
PAGE.20
Current harmonic for each phase
PAGE.32
Current harmonic for each phase
R phase current harmonic 1st order
S phase current harmonic 1st order
T phase current harmonic 1st order
Unit : A
R phase current harmonic 3rd order
S phase current harmonic 3rd order
T phase current harmonic 3rd order
Unit : %
R phase current harmonic 15th order
S phase current harmonic 15th order
T phase current harmonic 15th order
Unit : %
※ Page 19, 21~31 : Same configuration as Page 20
Chapter_5. Mode description

5.5 Display Overview
Page.19
- Display mode
Phase reactive power
and total reactive power
Phase apparent power
and total apparent power
+Normal active energy
-Reverse active energy
+Reverse reactive energy
-Reverse reactive energy
※ Hold the third key(●) for 2 seconds and switch to setting mode.
Voltage/Current/Power factor
Power Energy Max. value
Page tap ▲ / ▼
Page
shift
◀
.
▶
Phase Voltage
and Frequency
Line to line Voltage
and Frequency
Phase current
and circular graph
Phase power factor
and
average power factor
Phase active power
and total active power
shift
◀
.
▶
P
age
+Normal active energy
-Reverse active energy
+Reverse reactive energy
-Reverse reactive energy
R phase information
S phase information
T phase information
Voltage phase angle
Voltage line to line angle
Current phase angle
Phase voltage Max.value
Line to line
voltage Max.value
Phase current Max.value
Active power Max.value
Chapter_5. Mode description