| Answers |
| 1. |
Unpacking & Storage |
| 1.1. |
Contents, Unpacking & Storage - Procedure and Precautions |
| 1.1.1. |
Packed carton box contains - Quick Start Guide (QSG), Limited Warranty Certificate, Test and Calibration certificate. |
| 1.1.2. |
First check the carton for signs of damage or liquid spills. If any damage is found, then you must lodge a claim with the transporter. In this case, please contact the transporter before proceeding with the unpacking; he may want his agent to be present. Please also read the Conzerv Warranty certificate received with the meter |
| 1.1.3. |
Do not remove the protective plastic cover of your new Meters until the time of installation. Preserve the packing material. This will be required if the Meter needs to be shipped later for service or calibration. |
| 2. |
Installation & Commissioning. |
|
2.1. |
Procedure of Installation & Commissioning |
| 2.1.1. |
Please go through the Quick Start Guide (QSG) supplied with each new Meter for instructions, programming guidelines and installation/ commissioning. You can also down load from this website. |
|
2.2. |
Can I program the Meter at site without any training? |
| 2.2.1. |
Yes. The Meter is field programmable by the user. Please follow the Quick Start Guide (QSG) supplied with the Meter. If you are in India, you can dial toll free phone 1800 425 0555 from any of the MTNL or BSNL land line. |
|
2.3. |
Display of the Meter does not get ON. |
| 2.3.1. |
Check the auxiliary supply to the Meter. |
| 2.3.2. |
Auxiliary supply should be given between 44 to 300VAC, 50Hz or DC. If the auxiliary supply voltage is below or higher than the range specified above, correct it. |
| 2.3.3. |
Check the fuse in the auxiliary supply route. If blown, identify the cause (short circuit etc. in the connection external to the meter) and correct it. Then replace the fuse. |
|
2.4. |
I get negative KW readings on my EM 6000 Meter. Why? |
| 2.4.1. |
Check for correct CT connections. If CT polarities are reversed, negative KW readings will be displayed |
| 2.4.2. |
In order to identify the phase having CT reversal, view phase wise kW readings under kWavg. (Use'®' key to view phase wise kW). The phase showing negative reading is the phase in which CT is reversed. Check readings of phase angles of Current signal. If the polarities are interchanged, phase angle will be 180º out of phase. This is the phase angle of current with respect to the voltage. |
|
2.5. |
I have EM6400 Meter of class 0.5 accuracy. The permissible error indicated in Test and Calibration certificate does not match to the accuracy class claimed. How is the permissible error calculated?
|
| 2.5.1. |
W/ Wh: Class1.0 as per IEC61036, all other parameters: class 1.0 = +/- (0.25% of FS + 0.75% of reading). |
|
2.6. |
Can I use this Meter for 1 phase measurement?
|
| 2.6.1. |
Yes. The voltage and current connection to be given to the R-phase and meter should program for STAR system. Refer only R phase to neutral voltage at V1 and R Phase current at A1. (But the VLL average parameter will show 2/3 of input voltage, VLN average will show 1/3 of input voltage and the current will show 1/3 of the current value. It is better to ignore the Average Voltage and current parameters). |
|
2.7. |
What do you mean by Auto Scaling in EM6400 meter?
|
| 2.7.1. |
There are 2 LED's for Kilo & Mega indications in each row. The parameters will be displayed along with the K or M (none, any one or both) depending upon the site conditions (power ratios) to denote the value. |
|
2.8. |
What is the significance of FAV/ TURBO key? |
| 2.8.1. |
Favorite is the list of commonly used pages, which is hardwired in EM6400 series meters |
| 2.8.2. |
By pressing Fav/Turbo key for at least 3 seconds, the parameter name will be scrolled as mentioned in the sequence and stop pressing the key 'Auto' will be displayed and auto scroll of the Favorites is enabled. |
|
2.9. |
How do you enable and disable Auto Scroll mode? |
| 2.9.1. |
Enabling: Keep pressing the down key for at least 3 seconds, the parameter name will be scrolled within the level and stop pressing the key 'Auto' will be displayed and auto scrolling within the level is enabled. For scrolling within the page, keep pressing UP key for at least 3 seconds, the parameter name will be scrolled with in the page and stop pressing the key 'Auto' will be displayed and auto scrolling is enabled
|
| 2.9.2. |
Disabling: By pressing any one of the 5 keys the auto scroll will be disabled. |
|
2.10. |
How to enter and come out of SIM mode? |
| 2.10.1. |
Press the left key while display scanning occurs during switching ON of meter. By pressing the right key user can enter into SIM RMS mode. |
|
2.11. |
What do you mean by Universal supply to the meter? |
| 2.11.1. |
Meter works in both ac and dc auxiliary inputs. AC: 44 to 3000VAC or DC |
|
2.12. |
When does overflow of register take place? |
| 2.12.1. |
The overflow of period below depends on the product of the PT ratio and CT ratio that you have programmed for your application.
Where, PT Ratio x CT Ratio = Vpri X A pri
V sec A sec |
| |
PT Ratio x CT Ratio |
Max Reading |
Overflow Period (Months) |
Max |
Min |
1 to 1.999 |
9.999 x 106 |
3.85 |
1.92 |
2 to 10.999 |
9.999 x 107 |
19.29 |
3.51 |
11 to 100.999 |
9.999 x 108 |
35.07 |
3.82 |
101 to 1000.999 |
9.999 x 109 |
35.07 |
3.82 |
1001 to 10000.999 |
9.999 x 1010 |
35.07 |
3.82 |
10001 to 100000.999 |
9.999 x 1011 |
35.07 |
3.82 |
Greater than 100001 |
9.999 x 1012 |
35.07 |
3.82 |
|
|
2.13. |
Is MOV required to be connected across auxiliary terminals? |
| 2.13.1. |
Not required. Protection against certain amount of surge is already provided in the power supply circuitry of the meter. |
|
2.14. |
What is LABL & Eve 1 in the setup table? |
| 2.14.1. |
LABL: Labeling is to meet the international standard. The user can select the phase labeling as 123, abc, rst, pqr or ryb. |
| 2.14.2. |
Eve 1: The 1st three letters shows the parity (Eve for even, odd or no.) and the last digit of the same row shows the stop bit of the communication. |
|
2.15. |
What is DIAG1 & DIAG2 in EM6400 meter?
|
| 2.15.1. |
DIA1: First 3 digits of 1st row say the unit id.
4th digit displays the status as given below -
r = receiving the data
t = transmitting the data
u = wrong unit id
o = any one of the following error
(parity, over run or framing error)
F = wrong function which MODBUS does not supports
A = wrong address
2nd row displays the baud rate of the communication
rd row displays parity and no of stop bits. |
| 2.15.2. |
DIA2 for the internal reference. |
|
2.16. |
What is the difference between Run Hrs and ON Hrs? |
| 2.16.1. |
On Hrs: The ON Hrs time accumulates from the moment auxiliary given to the meter. This is nothing but ON time of the meter. |
| 2.16.2. |
Run Hrs: The Run Hr time accumulates when meter senses the current from the load center. For EM6400 meter minimum sensing current across will be 50mA. This is nothing but ON time of the load. |
|
2.17. |
What happens to kWh reading if Meter is connected to Capacitor? |
| 2.17.1. |
Meter will record negligible amount of energy, typically 0.2W per 1kVAR rating. However connection to the capacitor bank is not recommended as PF is lower than 0.1Lag and meter may not record correct active energy in such extreme condition. |
|
2.18. |
What do VARh and -VARh mean under intg page?
|
| 2.18.1. |
VARh is meant for Inductive Reactive Power and -VARh is meant for Capacitive Reactive Power. |
|
2.19. |
How will Kilo, Mega and Giga be represented? |
| 2.19.1. |
Range |
8 segment display |
"K" LED |
"M" LED |
0.000 to 9999 |
Numbers |
OFF |
OFF |
10x103 to 9999x103 |
Numbers |
ON |
OFF |
10X106 to 9999x106 |
Numbers |
OFF |
ON |
10X109 to 9999x109 |
Numbers |
ON |
ON |
|
|
2.20 |
When will the integrator be automatically cleared? |
| 2.20.1. |
Clearing the integrator will be based on CT*PT ratio, which is generally called as Power ratio. The following table will describe the Power ratio and the reset value. If any one of the integrator parameter (VAh, Wh, VARh & -VARh) reaches the particular limit (generally VAh parameter will reset first) integrator will reset. |
Power Ratio |
Reset Value |
Time taken for Resetting (months) |
Max |
Min |
1 to 1.999 |
9.999x106 |
3.85 |
1.92 |
2 to 10.999 |
9.999x107 |
19.29 |
3.51 |
11 to 100.999 |
9.999x108 |
35.07 |
3.82 |
101 to 1000.999 |
9.999x109 |
35.07 |
3.82 |
|
|
2.21. |
What is 'Prog' page? How to edit the setup table and clear the integrator? |
| 2.21.1. |
When meter is in Home page (RMS), press the UP arrow key once or by pressing the down key 3 times enter into "PROG". By pressing the left key Code Y/N will be displayed |
|
2.22. |
What is Mdl, ver and ver in the setup table? |
| 2.22.1. |
Mdl is meant for Model no of the meters (EM6400), followed by ver and ver is the version no. of the meter. E.g. for ver 02.02.02, here the first ver displays 02.02 and the next row displays 02. This is available in the first 3 rows of the setup table. It cannot be edited and is only for viewing. |
|
2.23. |
Can I resume the old setup parameter, if I set the wrong data? |
| 2.23.1. |
Yes. Come out of the setup table without savings the settings |
|
2.24. |
How to set CT and PT ratio? |
| 2.24.1. |
Please refer QSG supplied along with the meters |
|
2.25. |
What is meant for Star and Delta in the setup table? |
| 2.25.1. |
Star meant for STAR 3E, 4V3A and Delta meant for DELTA 3E, 3V2A |
|
2.26. |
Can I set my own password instead of 1000? |
| 2.26.1 |
No. The password is 1000 at all times |
|
2.27. |
How do I know which parameters are in the display page? |
| 2.27.1. |
When the meter is not in the Auto Scroll mode, the meter will display parameter name for 2 seconds and parameter value for 8 seconds i.e., once in 10 seconds the parameter name will display for 2 seconds |
| 2.27.2. |
However when Auto scroll is enabled, the time between the parameter to parameter is 5 seconds. In the 1st second parameter name and remaining 4-second parameter value will be displayed. |
| 2.27.3. |
Press any one of the keys; it will display the name of the parameters, which is in the display. |
|
2.28. |
What are all the parameters available in EM6400 favorites? |
| 2.28.1. |
RMS VLL,A,F VLN,A,F VA, W, VAR W,VAR,PF PF1,PF2,PF3, VAh and Wh |
|
2.29. |
How to enter in to Home page (RMS) if the user is stuck anywhere in the navigation (except set up and CLR mode) |
| 2.29.1. |
Press the Favorite key till it reaches the RMS page |
|
2.30. |
What is the standard of accuracy for ELF323X and ELF325X series? |
| 2.31. |
ELF3234 Class 1.0 as per IEC 61036/ CBIP TR No. 88 |
| 2.32. |
For LEF3259 there are no particular standards, however IEC61036 is taken as reference |
| 3. |
Adding new features.
|
|
3.1. |
RS 485 serial communication port. |
| 3.1.1. |
Meter can be retrofitted to the existing meter at extra cost. This can be done at our Customer Support Center at Bangalore. |
| 4. |
Up-gradation |
|
4.1. |
Up-gradation to new software version. |
| 4.1.1. |
As and when new software is released, meters calibrated with earlier software version will be upgraded at our Customer Support Centre at Bangalore free of cost. However to & fro freight charges shall be borne by the customer. |
|
4.2. |
Up-gradation to higher accuracy class |
| 4.2.1. |
Class 1.0 Meters cannot be upgraded to class 0.5. Because, EM6400 class 0.5 Meters have different set of hardware and software. |
| 5. |
Problem observed after few days/months. |
|
5.1. |
Display of the Meter does not get ON. |
| 5.1.1. |
Follow the instructions of 2.1.3 |
|
5.2. |
Integrated reading gets reset when operating a switch used for analog Meter. |
| 5.2.1. |
This is due to surge of above 3 kV emanated from Analog meter coil. |
| 5.2.2. |
Connect a Spark Quench of 0.1MFD+\-10% 600V AC across the Analog meter coil to suppress the surge. |
| 5.2.3. |
Ensure that the Spark Quench is not disconnected even during the maintenance of panel. Removal of Spark Quench could result in problem to re-surface. |
| 5.2.4. |
It is advisable to replace the analog meter and the selector switch with an accurate and reliable digital Conzerv Meter. Selector switch often causes fire from loose connections etc. It is banned in some states in India as a safety hazard. |
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