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Contents
1. OPERATING INSTRUCTIONS MFM383 MFM383 S MFM383 60Hz sco OY 96 x 96 FEATURES e 3lines 3 digits per line Bar graph for current indication Auto Manual page scrolling Universal auxiliary supply Measures all power parameters RMS voltage current active power apparent power power factor frequency and energy Programmable CT primary SPECIFICATIONS Display Liquid crystal display with backlight 3 lines 3 digits per line to show all parameters 4th line 8 digits to show energy Bar graph for current indication Display update time 10 sec for energy 2 sec for remaining parameters Electrical input type 3 phase 4 wire and single phase Rated input voltage Line to Neutral 350 VAC max 25 VAC min Rated input current Nominal 5A AC 0 1 Amin External CT required to be connected for MFM383 S model Auxiliary Supply 90 to 270 VAC DC 50 60Hz Input Frequency MFM383 50 Hz MFM383 60Hz 60 Hz MFM383 S 50 60Hz Burden 0 2 VA max 5A per phase 0 5 VA max 5A per phase for MFM383 S Frequency 4 0 1 O 1Hz Active Power 1 of F S 1 digit Apparent power 41 of F S 1 digit Power factor amp Avg Pf 0 01 PF 1 digit Energy Class 1 NOTE The accuracy table is valid at respective operating frequencies only CT Primary Programmable from 5 to 5000 Resolution Paramete2. na PAGE 4 WIRING DIAGRAM 3 PHASE 4 WIRE WIRING DIAGRAM SINGLE PHASE WIRING DIAGRAM ty 2 Average Curent EL MAET Ps O0 anse Selec Controls Pvt Ltd India Tot91 22 28676443 Fax 91 22 28471733 al free 1800 27 ste wiv selec cc E mait sales selec
3. ock power supply to the equipment must be kept OFF while doing the wiring arrangement 2 Wiring shall be done strictly according to the terminal layout Confirm thatall connections are correct 3 Use lugged terminals 4 To eliminate electromagnetic interference use of wires with adequate ratings and twists of the same in equal size shall be made 5 Cable used for connection to power source must havea cross section of 1 5 mm These wires shall have current carrying capacity of 5A MAINTENANCE 1 The equipment should be cleaned regularly to avoid blockage of ventilating parts 2 Clean the equipment with a clean soft cloth Do not use Isopropyl alcohol or any other cleaning agent INSTALLATION GUIDELINES A CAUTION 1 This equipment being built in type normally becomes a part of main control panel and in such case the terminals do not remain accessible to the end user after installation and internal wiring 2 Conductors must not come in contact with the internal circuitry of the equipment or else it may lead to a safety hazard that may in turn endanger life or cause electrical shock to the operator 3 Before disconnecting the secondary of the external current transformer from the equipment make sure that the current transformer is short circuited to avoid risk of electrical shock and injury CAUTION 1 The equipment shall not be installed in environmental conditions other than those mentioned in this man
4. ortest ES connections and Pise pe To enter in DAM B PRG 2 Layout of connecting cables shal be away trom 4 contrer any intemal EMI source La ras TERMINAL CONNECTIONS m Duaa increase MFM383 MFM383 S MFM383 60 Hz parameter O Decrease DS STS SS 1 Continuous operation of O A makes er update speed faster in 3 stage afer 7 seconds H 2j CT updates in steps at 5 after CT seting has reached to 100 in steps of 10 after CT setting has reached 1000 Eg After 1000 the display increments to 1 01 L6 1010 1 Press Q AM A PRG Key tor three seconds to come out of programming 2 The urit wat auto ext program mode ater 60 sec DISPLAY PARAMETER PAGE DESCRIPTION There are two methods to scroll through the different parameter pages on the display 1 Auto mode 2 Manual mode Auto mode In auto mode it allows you to monitor all pages sequentially at an interval of 5 Seconds without any key press Each page contains 3 parameters NOTE By defaut the unit works in auto mode Manual mode In manual mode using the keys ditierent parameter pages can be viewed In the manual mode the displayed page is seen until you manually change the page The parameter pages are as shown in the adjoining figures CONFIGURATION SCHEME NOTE Continuous pressing of AM PRG for 3 seconds initiates the programming mode ren meter noms to manual mode di
5. rs CT Primary Resolution lt 10 0 01A gt 10 and lt 100 O 1A Current gt 100 and 1A lt 1000 gt 1000 0 01 kA lt 10 0 01k gt 10 and kvarkw lt 400 gt 400 and 1k lt 2800 S00 DAM Parameter Measured Calculated Parameters Phase Unit ViN Ven Van V12 V23 V31 Voltage Vavg L N Vavg L L v Current E Cave Active Power kW KW KW w Apparent aleak KVA KVA KVA VA Power Factor Pf Pfa Pfa Avg Pf Pf Frequency Hz Hz Energy kWh kWh Accuracy Table Measurement Accuracy Voltage V 0 5 of F S 1 digit Voltage Vu 1 of F S 1 digit Average Voltage 40 5 of F S 1 digit Current 1 of F S 1 digit Average current 1 of F S 1 digit Temperature Operating 0 to 50 C Storage 20 to 75 C Humidity 85 non condensing Mounting Panel mounting Weight MFM383 S 218 gms MFM383 MFM383 60Hz 260 gms SAFETY SUMMARY All safety related codifications symbols and instructions that appear in this operating manual or on the equipment must be strictly followed to ensure the safety of the operating personnel as well as the instrument If the equipment is not handled in a manner specified by the manufacturer it might impair the protection provided by the equipment 4 CAUTION Read complete instruction prior to installation and operation of the unit ACAUTION Risk of electric shock WIRING GUIDELINES A CAUTION 1 To prevent the risk of electric sh
6. splay shows AAT imen meter tars to auto mode display shows RTE Bar Graph Indication In MFM 383 the bar graph shows the percentage of current flowing through the load The Bar graph shows the 25 50 75 100 125 and 150 of rated input current pi Press Q Display shows 2 Press to Reset count Det seting CD SE Reset NO Reset wo PSE POD El neuves INOTE On selecting Reset ES oniy energy wii bel Reset 2 Program settings are as given below femme Keypress Display Description Error indications 1 To configure CT primary Error Description Detaut soning CI foe ena ing ere ceca or CT reverse Ctr error occurs it 1 The CT secondary wires S1 amp S2 are swapped in wiring 2 The CT inputs are not connected to their respective phases that is CTI to R phase CT2 10 Y phase and CT3 to B phase NOTE Cir error displayed oniy on Active Power page and Power Factor z ERD CON L20203 T F Display shows Line to Neutral Voliage amp Energy WV 5 25 ie 50 av SL Sie 100 sv DLSTSLR 150 2 kin Energy fot RAR v2 5 25 Le 50 2v2 6 L 5 ie 100 vai T h 625 0 125 RM Energy Fea AETI PAGE DESCRIPTION CONTINUED PAGES WAI 5 25i2 50 Fes Ao Press OO von
7. ual 2 The equipment does not have a built in type fuse Installation of external fuse of rating 275VAC 1A for electrical circuitry is highly recommended 3 Thermal dissipation of equipment is met through ventilation holes provided on chassis of equipment Such ventilation holes shall not be obstructed else it can lead to a safety hazard 4 Connectors screws must be tightened after installation MECHANICAL INSTALLATION For installing the meter 1 Prepare the panel cutout with proper dimensions as shown below OVERALL DIMENSIONS All dimensions in mm ij H A E 6 Panat Cutt 1 Be ee ho A B DJElFIG MFM383 99 99 5 46 91 02 92 Document name Operating 0901 MEM383 OP 251 VO1A Page 1 of 3 2Pushine mater into the panel cutout Secure the meter in ta place by pushing the clamp on he rear Side The sews of he panel ofthe clamp must Be inthe fanest forward sot For proper sealing tighten the screws evenly with required torque Acaunon Keys Description Functions Key press To saai moon 1 ang Srecson in mareal mode To sorol trough to next pages Tre oquipment in ta installed state must not come ETS ER ioe pity 1o any eating sou esse 2 Meer in O ORs por ois seam or oer unwanted process byproducts me EMC Guidelines a Lome T Use proper input power cables with sh
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