| Answers |
| 1. |
Product features |
| 1.1 |
How to know about the features of the Meter? |
| 1.1.1. |
Visit our Website www.conzerv.com for details. |
| 1.1.2. |
Call nearest contact point of Conzerv for assistance |
| 1.1.3. |
Call our dealers across India, UAE, Thailand, Malaysia, Indonesia, Australia and Singapore. Visit web site for details. |
| 1.1.4. |
Call 1800 425 0555 (Toll Free Phone No. - all over India) for information's. |
| 1.1.5. |
Write to contact@conzerv.com for details. |
| 2. |
Unpacking & storage |
| 2.1. |
Contents, Unpacking & storage - Procedure and Precautions |
| 2.1.1. |
Packed carton box contains - Operating manual for CVM144 series meter, Limited Warranty Certificate. |
| 2.1.2. |
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 Limited Warranty certificate received with the meter. |
| 2.1.3. |
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. |
| 3. |
Installation/ commissioning |
| 3.1. |
Procedure of installation & commissioning |
| 3.1.1. |
Please go through the Operating Manual for CVM series meter supplied with each new Meter for instructions, installation/ commissioning. Refer wiring Diagram stuck on the case behind the bezel. |
| 4. |
Clarifications |
| 4.1. |
Clarifications on product/product features |
| 4.1.1. |
Call nearest contact point of Conzerv for assistance |
| 4.1.2. |
Call our dealers across India, UAE, Thailand, Malaysia, Indonesia, Australia and Singapore. Visit web site for details |
| 4.1.3. |
Call 1800 425 0555 (Toll Free Phone No. - all over India) for online assistance. |
| 4.1.4. |
Write to contact@conzerv.com for details. |
| 4.2. |
What are all the parameters can be programmed for Demand measurement? |
| 4.2.1. |
KVA or kW or 3 phase current can be programmed for demand measurement. Relay outputs can also be programmed for Energy totaling. |
| 4.3. |
What is the duration of Demand interval? |
| 4.3.1. |
Duration of Demand interval can be set from 1 to 60 minutes |
| 4.4. |
Why 2 relays are used? |
| 4.4.1. |
Relay output can be programmed for Demand controlling, Instantaneous parameter controlling (upper and lower limit can be set) or can be set for desired energy pulse out put |
| 4.5. |
Can CVM 144 be used for HT? |
| 4.5.1. |
Yes meter can be used for HT as well as LT |
| 4.6. |
What is the maximum voltage that can be measured directly from the instruments? |
| 4.6.1. |
Maximum voltage at the voltage measuring circuit: |
| 4.6.1.1. |
Standard: 300 V ac phase-to-neutral or 520 V ac. phase-to-phase, 45 to 65 Hz |
| 4.7. |
What is the cutout size required for mounting the instrument? |
| 4.7.1. |
Cut-out of 138+1 x 138+1 mm, as per DIN 43 700 |
| 4.8. |
What will be the residual current measurement by the instrument? |
| 4.8.1. |
Measurement of residual current with a maximum value of 3 A (range of 30 mA ... 3 A) |
| 4.9. |
How the instrument will have the self-diagnostic feature? |
| 4.9.1. |
When the CVM-144 is powered on, 2 screens with the indication of the program version and the hardware configuration. |
| 4.9.2. |
After some seconds, the analyzer is ready for operation and shows one of the available screens. A LED next to the shown parameter is on. |
| 4.10. |
How to set the voltage parameters in the screen? |
| 4.10.1. |
In CVM144 instrument Phase-to-Phase or Phase-to-Neutral voltages can be selected for default display. During programming mode of the instrument the voltages can be set |
| 4.11. |
What are the Communication settings in CVM144 meters? |
| 4.11.1. |
Protocol: Modbus |
| 4.11.2. |
CVM-144 default configuration: 001/ 9600/ 8 bits / N / 1 bit |
| 4.11.3. |
Available baud rates: 1.200 - 2.400 - 4.800 - 9.600 - 19.200 bauds |
| 4.11.4. |
RS-485 type output: RS-485 connection will be carried out by means of a twisted and screened cable, with a minimum of 3 wires, with a maximum distance between the CVM-144 and the last peripheral of 1200 m (ideal condition). The CVM-144 uses a RS-485 communication bus allowing up to a maximum of 32 devices in parallel (Multi-point bus) per port used in the PC. |
| 4.11.5. |
RS-232 type output: - RS-232 connection will be carried out by means of a twisted and screened cable, with a minimum of 3 wires, with a maximum distance between the CVM-144 and the P.C. of 15 m. |
| 5. |
Problems after installation |
| 5.1. |
Meter is not displaying VA |
| 5.1.1. |
Meter will not display VA but can be seen through communication port. |
| 5.2. |
Meter is not showing individual harmonics |
| 5.2.1. |
Meter will not display individual harmonics but can be seen through communication port. |
| 5.2.2. |
Individual harmonic current content up to 15th can be measured. |
| 5.2.3. |
However meter will display THD of both Voltage and current. |
| 5.3 |
How the neutral current is calculated? |
| 5.3.1. |
Meter will calculate the neutral current based on the current inputs and this can be seen through communication. |
| 5.4. |
Can I program the delay time in relay output? |
| 5.4.1. |
Yes, the delay can be programmed from 0 to 9999 seconds for the relay output. Additionally relay output can be programmed for Energy totalizing. |
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