Conzerv energy meter em 6400 manual

Bailey Line Road Recommended for you. EM User Manual v Customer Service and Support Customer service and support is available via email at [email protected] Please include the model, serial number and a description with which we can re-create the problem at our Support Centre.

They may not be used for any purpose without the owner's permission, given in writing. This means that the value for SYS has been changed to delta. This means that the new value for SYS has been accepted. Step6: After completing upto step6 above, go. The display shows CLR.

Step3: Go. If you donot want to clear INTG, go. Now go to step 6. If is pressed more than once, the integrator value will not be transferred to OLD register and will be lost Step6: Press to exit. If you donot want to clear MD, go. Now go to step6. Step5: Go once to clear MD. MD is cleared and the data is transferred to OLD register. A few of these need explanation: run.

This counter accumulates as long as any one Amps phase has more than 10mA through the meter terminal. In Star Wye mode energy integration always be in forward direction irrespective of the direction of current flow or sign of the per phase power reading.

It accumulates several parameters over time, as explained above. All values are Direct Reading and have a high resolution. This is necessary for accurate energy analysis over short intervals of time.

It also means that the readings max out and reset sooner or later as given below. This makes energy management calculations such as Average PF very easy. The value at which the meter overflows is given below. Table 3. Summary We have now learnt 1. To operate the EM Series products. To configure its Setup and 3. To clear its Demand and Integrator readings. Fundamentals of Three-Phase Measurements. Three-Phase Systems A three-phase system delivers higher levels of power for industrial and commercial applications.

The three phases correspond to three potential lines. A typical configuration has either a Delta connection or a Wye Star connection see Figure 4. In practice, there will be some unbalance difference. Figure 4. Power measurement in a poly phase system is governed by Blondel's Theorem. A typical configuration of poly phase system has either a Delta connection or a Star Wye connection see Figure 4.

Typically, the unit in which consumption is specified is the kilowatt-hour kWh : one thousand watts consumed over one hour. Utilities use the Wh equation to determine the overall consumption in a billing period. Transferring reactive power over a distribution network causes energy loss. To force consumers to correct their Power Factor, utilities monitor reactive power consumption and penalize the user for Poor Power Factor.

This advanced method provides the most accurate and predictable measurement under unbalanced as well as distorted waveform conditions. However, in case the EM needs to match the reading of older or simpler meters, which use the Arithmetic kVA definition, this too is available as a Setup option.

Table 4. Please read this and the following chapter completely, before proceeding provided for firm mounting. Diagram below displays the various dimensions of mechanical installations. Installation Procedure 6. Panel Mounting for New Installations. While this manual suggests several safety and reliability steps, it must be used in conjunction with the safety codes in force at your location.

All work including handling of electrical circuits during Installation, wiring and periodic maintenance, must be done only by qualified personnel. The covers of the EM should never be dismantled or opened. There are no user-serviceable parts inside. High voltages are likely to be present inside even after the EM has been switched off. Usage First, decide on how the EM is going to be used. If you do not already have an energy management program in operation, then your energy consultant should be able to help you identify which load s offer maximum savings potential.

This will help you decide which point is to be monitored, where the readings will be viewed from, who must have access to the instrument and how often. For best performance, choose a location, which provides all the required signals with minimum wiring lengths. Panel Considerations and Environment The EM is a high - precision measuring instrument and its operating environment is of utmost importance.

For maximum performance, the instrument should be mounted in a dry, dust-free location, away from the heat sources and strong electromagnetic fields. The EM should be separated from other equipment and sufficient space must be provided all around for cooling air to rise vertically past the instrument.

The cooling air temperature must be below the specified operating temperature. The panel or housing, in which the EM is mounted, should protect it from dust, moisture, oil, corrosive vapours, etc. The panel doors must be easily opened to provide easy access to the EM wiring for trouble- shooting. Allow clearance if the unit is going to swing out, as well as adequate slack in the wiring.

Allow space for terminal blocks, CT shorting blocks, fuses, auxiliary contractors and other necessary components. Viewing For ease of operation, in the location should be preferably at, or slightly above, eye-level. For viewing comfort, minimize glare and reflections from strong light sources. Mounting Before mounting and wiring, the Setup procedure see section 3. The EM is panel mountable. Leave Depth behind Bezel clearance for wires. The cutout should be punched with the proper tool and should be free from burrs.

Before wiring, insert the EM into the cutout from the front. Then, fasten the two side clamps from the rear. While supporting the EM from the front, tighten both side clamp screws in a criss-cross pattern till all slack is taken up and then apply one full turn. Do not over-tighten. This does not indicate defective manufacture and is not covered by product warranties. Flat OK. Worn-out bits and insufficient hold-down pressure while tightening will cause the bit to ride on the screw head thus stripping and damaging it.

Auxiliary Control Power Supply. The Setup procedure Section 3. External surge suppressors are necessary in the auxiliary supply circuit for proper operation during extreme surge conditions, where the voltage surges exceed the auxiliary supply limits E.

Rural areas and outlying areas prone to lightning strikes. NOTE 1: The auxiliary power supply may be derived from the voltage signals. NOTE 2: If you have a v three-wire delta system and a reliable neutral is not available, a v: v Supply transformer should be used to provide the standard v auxiliary supply.

PTs and CTs Large electrical installations have high voltages and currents, which may exceed the direct connection rating of the meter. The PTs Potential Transformers and CTs Current Transformers must be planned, installed and tested by a qualified electrical contractor before wiring the meter. The accuracy of the measurement also depends on the accuracy and phase — angle error of the PTs and CTs. Do not use protection class 10P10, etc. CTs to feed the EM ; they have poor accuracy and phase characteristics.

On the other hand, if the CT is under- rated, then you may exceed its full-scale and burn out both the CT and the EM You may want to support the auxiliary supply burden from one of the PTs. CT wiring can impose additional burden loading on the CT. For example, if the CT has a 5A secondary and the wire resistance is 1. If the wiring distance from the CT secondary is greater than stated in Table 6.

Choosing a 1A CT secondary can reduce this error. The CT Secondary value must be user programmed into the meter. Voltage Signal Connections For proper meter operation, the voltage connection must be maintained. The voltage must correspond to the correct terminal. The cable required to terminate the voltage sense circuit should have an insulation rating greater than V ac and a current rating greater than 0.

There are 4 input voltage terminals marked V1, V2, V3 and Vn. See the wiring diagrams that follow, for details. For Delta connection, the Vn terminal should be left un-connected.

Do not short the PT secondary. See the voltage input overload graph for more detail. Field Programmable PT Primary range : 0. EM Voltage Input burden : 0. Use a 1A fuse on each voltage input.

Above that, a Current Transformer must be interposed to scale down the current. There are three pairs of current input terminals marked A1, A2 and A3. Each pair of input terminal is labelled as S1, S2 and has an arrow indicating the direction of current flow. For proper measurements, the phase identification as well as the polarity of the current signals must be correct. The forward flow import by consumer current direction must be into the S1 terminal and the exit from the S2 terminal. Please maintain the correct sequence and polarity to avoid wrong readings.

Any unused current input terminals e. A2 S1, S2 for Delta must be shorted together. The shorted terminals do not need to be grounded. Install the wiring for the current circuit at V ac insulation as a minimum. The cable connection should be rated for 7. Under no circumstances must the CT secondary be left open-circuited, even momentarily, when primary current is flowing.

This causes high voltages that will overheat and explode the secondary of the CT and damage the instruments as well. Mount the current transformers CTs as close as possible to the meter for best accuracy.

The following table illustrates the maximum recommended distances for various CT sizes, assuming the connection is via 16AWG cable.

Table 6. EM CT burden : 0. See the Setup Field Programming section for programming details. Do not change the range thereafter without re-programming the EM ; the EM will read erroneous values.

CT polarities are dependent upon correct connections of CT leads, and upon the direction the CTs are facing when clamped around conductors. The dot on the CT must face the line side; the corresponding secondary connection must connect to the appropriate input on the meter. Failure to connect CTs properly results in inaccurate power readings. If your meter is not reading power properly, it is more than likely that the CT is incorrectly wired.

If one or two CTs are reversed, then energy parameters accumulate only one phase value. If two or all the phases of the CT are reversed, energy will not accumulate. CT Connection Reversal To check the polarity of the CT after the meter has been installed, simply look at the phase-wise W Watt readings to see that each of the readings are positive assuming you are consuming power. If one of the W readings is negative, that particular phase CT is reversed and must be corrected.

On the other hand if you are exporting power, all three phase-wise W readings must be negative. This is programmed in the Setup procedure Section 3. The meter does allow you to change this setting while it is running; however, this capability is meant for correcting a gross error, or for training or educational purposes, not to be changed regularly.

Here, all three voltage Phase signals, the Neutral voltage connection and all three current input signals need to be wired in, means all the 4 voltage terminals and 6 current terminals described in the following section, need to be wired. This setting is also used for single phase circuits. Here, the V1 and VN terminals as well as the A1 S1 and S2 terminals will be used to sense a single voltage and a single current.

You can setup the meter to display phase labels convenient to your practice. The factory setting is 1, 2, 3. Connection Diagrams Choose the diagram below that best describes your application. Follow the outlined procedure to verify correct connection.

EM Rear Panel The meter terminals are located on the rear panel. Direct voltage connections if the input voltage L-L is less than V ac. PT Optional S1 S1 8. S2 V2 CT S2 V3 S1 Other Meters 44 to v ac dc. Aux Supply A3 Control power Sl. Figure 6.

Leave the Vn terminal un-connected. Otherwise 3 PTs. PT Optional S1 S1. Otherwise use one PT. The unused current terminals must be shorted together. Program the meter in for STAR mode. However Voltage primary and secondary needs to be programmed as Line to Line. Connect the voltage and current inputs only to the V1 and A1 voltage and current terminals of the meter.

The unused current terminals A2 and A3 must be shorted together to reduce noise picked up in the meter. However, the energy parameter readings will be accurate.

CT S2 V2. Aux Supply. RS Each EM series instruments have a unique address up to three digits long. The range of the instrument address is 1 to Under Modbus, each port supports up to instruments.

However, each RS segment allows only 32 nodes instruments. Therefore, Data Repeaters are necessary to amplify the signal between segments.

Available standard baud rates are , , , and The connection diagrams show one Termination Resistor RT across the cable-pair at each end of the cable. Its value should approximately equal the Impedance of the Data Cable, as specified by the cable manufacturer. The termination resistors help absorb the data signal reflections off the ends of the cable, reducing data packet defects and the corresponding data packet re-transmissions.

In cable runs longer than say meters feet , and with baud rates higher than baud, these benefits become more apparent. Repeaters RS transceivers repeaters of the half-duplex variety are required for large networks of instruments. Typically, the Device Address, Block Start Address, number of registers 20 registers per EM data block of 10 x 32 bit values , must be configured to suit the meter. Additionally, related SCADA settings for polling priority, logging and viewing the data must also be made.

This enables fast block-transfers, since. This method also eliminates time-skew within readings of that block. This enables to transfer required data values for energy management. A few values are in unsigned long 32 bits. All EM readings are 32 bits.

Parameters not available on Display Voltage phase angle parameters are not available on the front panel display but available on the RS communication port:. Parameters not available on Front Panel Display 1. Voltage Phase Angle Phase — 1 2. Voltage Phase Angle phase — 2 3. Voltage Phase Angle Phase — 3. Refer the below modelwise Note: The difference in EM v EM — EM — Parameter v Key Factor for Success All Installation, wiring and periodic maintenance of the EM as well as its associated circuits involve high voltages and currents.

While this document suggests several safety and reliability steps, it must be used in conjunction with the safety codes in force at your location.

Only qualified personnel must perform all activities including handling of electrical circuits during Installation, wiring and periodic maintenance. Installation Steps Recommended Effects if not allowed No 1.

Ensure that the packaging of a. Ensure that the seal at the b. Do not remove the c. You will need the packing protective plastic cover of material if the meter needs your new Meters until the to be shipped to CONZERV time of installation. Preserve for servicing or calibration. The meter accepts up to 6A a. Above that, a connection could damage Selection Current Transformer must the instrument.

Use Instrument Class 1 or b. These will have etc. Ensure that the CT Primary c. If the CT is under-rated, then you may exceed its full-scale and burn out both the CT and the meter. With Dual - Range CTs, d. Program the selected CT e. If the CT ratio that you have ratio before you start selected is not programmed measurements using EM before using the meter, the Load current of the circuit f.

For input voltage above a. PTs have poor accuracy better accuracy compared to and phase characteristics. Program the selected PT c. If the PT ratio that you have ratio before you start selected is not programmed measurements using EM before using the meter, the The cable connection should a. EM has input current Compone Wires for be rated for 7. The cable required to a. EM has input voltage Compone Wires for terminate the voltage sense rating between v to v nt PT circuit should have an ac.

Thus the cable used for Selection insulation rating greater connecting the external PT than V ac and a current to the meter terminals rating greater than 0.

If the cable selection is wrong this could cause damage to the instrument. Use a 1A fuse on each a. Safety of operation. Affect Compone voltage input. MCB to meter circuitry — voltage nt Voltage terminals to protect circuit may not function Selection against short circuit. Use external surge b. Transients, Surges, Voltage suppressors in the Auxiliary swells affect the components Supply Circuit.

External surge suppressors should be used in order to ensure proper operation when the voltage surges exceed the Auxiliary Supply limits. Use fuse across auxiliary c. Affect meter circuitry — terminals — mA to display goes off.

The CT Primary and a. If the CT ratio is not ng Setup programmin Secondary values must be programmed according to g User Programmed before the circuit connected to the using the Meter according to meter, the readings might be the external circuitry wrong. The PT Primary and a. If the PT ratio is not ng Setup programmin Secondary values must be programmed according to g User Programmed before the circuit connected to the using the Meter. The EM meter, the readings might be allows Field wrong.

Programming of both PT Primary and Secondary voltages. For three phase four wire a. Select the full-scale load a. Mechanical dimensions a.

If the panel dimensions are out, bezel, Panel cut-out dimensions not maintained; you will not be depth behind are 92 x 92 mm able to mount your EM bezel Bezel dimensions are 96 x successfully. The panel doors must be a. Sufficient spacing will allow Spacing easily opened to provide ease during troubleshooting easy access to the EM or change in wiring.

Allow clearance if the unit b. Sufficient spacing will allow is going to swing out, as ease during troubleshooting well as adequate slack in the or change in wiring. Mounting clamps shall be a. If mounting clamps are not clamps tightened using screwdriver sufficiently tightened, the to ensure accurate mounting meter position may shift and of the meter on the panel. This could result in erroneous readings, short circuit.

For the last few turns — b. If clamps are not alternately alternate between the two tightened, the meter might clamps and tighten two be mounted slanted on the turns each i.

Tighten 2 panel. Over-tightening could result in breaking of the clamps. The EM should be a. Lack of sufficient air for circulation separated from other cooling, cooling temperature and equipment and sufficient higher than the specified temperature space must be provided all operating temperature may around for cooling air to rise result in over-heating of vertically past the your EM The temperature of b.

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