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240 series din panel meters 8 features an extensive range of specialist measuring meters in 4 case sizes shock resistant taut band suspension vibration-proof hi-q damping slide in dials for 90?urrent, voltage and frequency on models 242, 243 and 244 terminal covers supplied as standard benefits low cost local indication ease of installation minimal training low maintenance customised options and features applications switchgear distribution systems generator sets control panels energy management building management utility power monitoring process control motor control approvals lrs and bv approvals. an extensive range of 48, 72, 96 and 144mm din style panel meters offering measurement of all electrical and electronic parameters. meters are shock resistant and vibration proof and supplied with terminal covers. a selection of slide in dials and customised options are available. movements in crompton instruments?world-patented ?i-q?taut band suspension, all the delicate parts of the traditional instruments are eliminated. there are no pivots, no jewel bearings, no hair-springs and no air damping vane. instead, a tough platinum ribbon suspends the moving element between front and rear tension springs. specially contoured pads are fitted to the ends of the spindle, and the working gap at each end is filled with a high quality silicon fluid. the pads, together with the fluid reservoir, form a system which acts as a resilient built-in shock absorber. this provides both rotational and longitudinal damping as the moving element floats on oil with no bearing friction and is effectively cushioned against shock and vibration. 360 synchroscopes and power factor meters have robust pivot and jewel bearings with oil damping. dials, scales and pointers standard dials are matt white with black printed scales and bar knife-edge pointers. black dials with white or yellow scales and pointers are also available. interchangeable slide in dials are used on models 242, 243 and 244 90 moving iron, moving coil and frequency meters. general options include red supplementary pointers, red indexes (quadrant scales), red, green or blue lines, bands or segments, finely spaced divisions, multi-scales, special scales and captions to customer' requirements. illumination internal illumination is available in the following models: ?244 and 246 shortscale moving coil and moving iron vane. ?243, 244 and 246 longscale moving coil and moving iron vane. through dial (translucent) illumination on 244 and 246 models. edge illumination on 243, 244 and 246 models. replaceable 6, 12 or 24v lamps are used on all models except 243 longscale meters, where the lamps are internal. specification performance bsen60051 measuring ranges din 43701 accuracy overload bsen60051 dimensions din 43700 scale marking generally din43802 magnetic influence bsen60051 safety iec414 terminals clamp strap m4 up to 25a. clamp strap m8 over 25a humidity range up to 95% rh (non condensing) test voltage @50hz 2kv rms for 1 minute overload ac current x 1.2 continuous x 10 for 5 seconds overload ac voltage x 1.2 continuous x 2 for 5 seconds frequency see main pages for other instruments damping time less than 3 seconds is standard. more heavily damped movements are available on request. standard calibration 23? operating temperature -20? to +60? enclosure code ip54 as standard (to bsen60529). ip55 consult factory terminals ip20b with terminal cover or terminal boots fitted case grade ul94v0 base grade ul94v1
240 series din panel meters 9 din 16257 symbol meaning for calibration position vertical horizontal inclined 60 inclination of dial surface to the horizontal e.g 60? required orientation must always be stated when ordering if other than vertical mounting is required. specification continued case dimensions and panel cutout conform to iec473, din 43700. models 242, 243 and 244 have cases and bezels injection moulded in flame retardant engineering thermoplastic, recognised by underwriters laboratory materials specification. all 246 models have pressed steel cases. bezel slim-line din43802 black as standard bezel window standard sheet glass, with zero adjusters where appropriate. non reflecting glass or polycarbonate shatterproof windows are available. installation installations in switchboard panel or mosaic arrangement on equipment or machine with a panel thickness of up to 40mm in a horizontal or vertical plane. installation category iii fixing on panel models 242, 243 and 244 ?2 corner fixing clamps and tensioning thumb screws model 242 ?available with a one piece ?ush on?clamp. model 246 - 2 side fixing spring clips mounting position normal vertical mounting or as indicated on the scale in accordance with din 16257. a deviation of ?5 is permissible approvals lloyds shipping (lrs), bureau veritas (bv), emc and lvd dimensions model 242 243 244 246 bezel ? 48 x 48 72 x 72 96 x 96 144 x 144 panel cut-out ? 45 x 45 68 x 68 92 x 92 138 x 138 scale length: 90 42 65 94 145 scale length: 240 72 112 150 230 maximum overall depth ?? ammeters and voltmeters a.c. & d.c.* 64 64 64 60 ammeters and voltmeters with switch* 64 dual meters* 64 elapsed time meter/hours run* 64 64 64 maximum demand indicator* 64 64 60 combined mdi & mi indicator* 64 60 maximum demand indicator with relay* 90 frequency meter 90? 64 64 64 60 frequency meter 240? 120 125 phase angle, power factor meter 90? 107 240? 107 m.c. indicator with separate transducer* 64 64 64 60 dynamometer 360 synchroscope* 120 125 dynamometer 360 power factor meter* 120 phase sequence indicator* 64 64 ? position indicator* 120 125 speed indicator* 64 64 64 60 temperature indicators* 120 125 quadra meters* 64 ? impulse counters* 64 64 64 wattmeter, varmeter 90 107 125 wattmeter, varmeter 240 107 125 model 244-21y & 244-21z 142 led synchroscope & synchro check relay 80 led 360 synchroscope 80 indicator only * if separate terminal cover is used add 20 mm to dimension c not available panel cut-out maximum panel thickness 10mm b b a a c
240 series din panel meters 10 moving iron a.c. ammeters and voltmeters designed to measure a.c. current or voltage, these meters indicate true r.m.s. values and are substantially independent of system waveform. scales are calibrated down to 20%, and ammeters can have overload scales x2, x3, x5 or x6 for motor start duty. ammeters can be supplied for use with -/1a or -/5a current transformers, whilst voltmeters can be scaled for use with voltage transformers. heavy damping is available as an option. meters can be used to measure d.c. at reduced accuracy. specification ?short scale accuracy: class 1.5 frequency: 50 or 60hz, (400hz on request) burden at 50hz: ammeters: 0.5va voltmeters: up to 4.5va maximum ratings: ammeters: 0.5a to 100a a.c. direct connected (40a for 242-75a and 246-07a). maximum system voltage 720v a.c. low load / high middle maximum 10a voltmeters: 6v to 600v product codes ?short scale bezel size mm 48 72 96 144 scale length mm 42 65 94 145 product codes a.c. ammeter 242-75a 243-02a 244-02a 246-07a x2 overload ammeter 242-752 243-022 244-022 246-072 x3 overload ammeter 242-753 243-023 244-023 246-073 x5 overload ammeter 242-755 243-025 244-025 246-075 x6 overload ammeter 242-756 243-026 244-026 246-076 low load ammeter 243-02h 244-02h a.c. voltmeter 242-75v 243-02v 244-02v 246-07v low middle voltmeter 243-02m 244-02m specification ?long scale accuracy: class 1.5 frequency: 50 or 60hz, (400hz on request) burden at 50hz: ammeters: 1.5va voltmeters: 4.5va maximum ratings: ammeters: 0.5a to 25a a.c. direct connected maximum system voltage 720v a.c. low load / high middle (maximum 10a) voltmeters: 6v to 600v a.c. product codes ?long scale bezel size mm 48 72 96 144 scale length mm 72 112 150 230 product codes ammeter 242-03a 243-03a 244-03a 246-03a x2 overload ammeters 242-032 243-032 244-032 246-032 x3 overload ammeters 242-033 243-033 244-033 246-034 x5 overload ammeters 242-035 243-035 244-035 246-035 x6 overload ammeters 242-036 243-036 244-036 246-036 low load ammeters 243-03h 244-03h voltmeter 242-03v 243-03v 244-03v 246-03v connections a.c. ammeter a.c. voltmeter
240 series din panel meters 12 frequency meters these frequency meters use an integral electronic converter and a moving coil indicator. this meter is easy to read with an accuracy class 0.5. specification accuracy: class 0.5 ratings: 100v-125v a.c 200v-250v a.c. 380v-440v a.c.* 500v a.c.* *for voltages above 380v use 242-013 with a 253-thz, in place of 242-41s models available for use with v.t.s frequency 0.5%: 45/55hz, 55/65hz, 45/65hz, 360/440hz other scalings available on request burden: 4va maximum product code bezel size mm 48 48 72 72 96 96 144 144 scale length mm 42 72 65 112 94 145 product code 242-41s 242-053 243-41s 243-053 244-41s 244-41l 246-41s 246-41l +253-thz +253-thz dual frequency meters two instruments in one case can be used to measure a wide range of frequencies. these dual instruments save both panel space and assemly time. the 244-41d is an ideal component in sychronising applications. specification accuracy: class 0.5 ratings: 100v-125v a.c 200v-250v a.c. 380v-440v a.c. 500v a.c. models available for use with v.t.s frequency 0.5%: 45/55hz, 55/65hz, 45/65hz, 360/440hz burden: 4va maximum product code bezel size mm 96 scale length mm 65 product code 244-41d connections connections
240 series din panel meters 18 moving coil d.c. ammeters and voltmeters moving coil meters are suitable for all d.c. systems. the linear scale is calibrated down to zero and the accuracy maintained down to 10%. high currents are measured with separate shunts and suitably scaled indicators. suppressed, centre and offset zero models are available. specification accuracy: class 1.5 ratings: ammeters: 100? to 25a, (200? for 05 model) 4/20ma suppressed zero 40a for model 243/244-01a voltmeters: 50mv to 600v 1/5v suppressed zero 50, 60, 75, 100, 150mv for use with shunts impedance: ammeters: 75mv internal shunt above 60ma voltmeters: 1000 ? /v above 1v further details on our t-sheet t118 available on request. product codes ?short scale bezel size mm 48 72 96 144 scale length mm 42 65 94 145 product codes ammeters 242-89a 243-01a 244-01a 246-10a ammeters suppressed zero 242-89r 243-01r 244-01r 246-10r voltmeters 242-89v 243-01v 244-01v 246-10v voltmeters suppressed zero 242-89s 243-01s 244-01s 246-10s product codes ?long scale bezel size mm 48 72 96 144 scale length mm 72 112 150 230 product codes ammeter 242-05a 243-05a 244-05a 246-05a ammeters suppressed zero 242-05r 243-05r 244-05r 246-05r voltmeters 242-05v 243-05v 244-05v 246-05v voltmeters suppressed zero 242-05s 243-05s 244-05s 246-05s moving coil dual d.c. ammeters and voltmeters dual instruments can be used to measure a wide range of currents and voltages, and save both space and time by requiring only one panel cut-out. the 244-80m allows for independent measurement of two d.c. currents in one case. the 244-80e allows for independent measurement of two d.c. voltages in one case. specification accuracy: class 1.5 ratings: d.c. current: 100? to 25a direct connected 4/20ma suppressed zero. d.c. volts: 50mv to 600v 1/5 volt suppressed zero 50, 60, 75, 150mv for use with shunts. product codes bezel size mm 96 scale length mm 94 product code ammeters 244-80m voltmeters 244-80e connections d.c. ammeter d.c. voltmeter connections dual d.c. ammeter dual d.c. voltmeter
240 series din panel meters 19 temperature indicators longscale indicators to read temperature values, usually remotely with rtd or thermocouple sensors supplied by the customer. rtd (resistance temperature detector) indicators measure the change in resistance of the sensor. a 2 or 3 wire system may be used. thermocouple indicators accept standard millivolt input signals. cold junction compensation is provided and thermocouple break indication is incorporated. specification accuracy: class 1.5 - indicator only. rtd indicator suitable for 10 ? copper 100 ? platinum, 100 & 120 ? nickel sensors power in rtd is 100? approximately. thermocouple indicator suitable for j (0-700?), k (0-1200?) 50 ? maximum circuit resistance. auxiliary supply: model 45r: from 63.5v to 480v a.c. at 50/60hz model 45t: 110, 115, 220, 240, 380, 400, 480v a.c. and 12, 24, 48, 110, 125v d.c. burden: -45r 2va, -45t 3va product codes bezel size mm 96 144 scale length mm 150 230 product codes rtd 244-45r 246-45r thermocouple 244-45t 246-45t process indicators used to check process functions locally or remotely at centralised controls. these moving coil instruments offer a wide variety of electrical and mechanical readouts operated by transducer, tachogenerator, thermocouple, resistance bulb or other d.c. analogue signals. suppressed, centre and offset zero models are available on request. specification accuracy: class 1.5 ratings: 1, 2, 5, 10 & 20ma. 4/20ma suppressed zero. burden: see our technical data sheet t118. product codes ?short scale models bezel size mm 48 72 96 144 scale length mm 42 65 94 145 product codes a.c. current 242-89a 243-01a 244-01a 246-10a a.c. voltage 242-89v 243-01v 244-01v 246-10v speed 242-892 243-012 244-012 246-102 frequency 242-893 243-013 244-013 246-103 phase angle 242-894 243-014 244-014 246-104 watts 242-895 243-015 244-015 246-105 vars 242-896 243-016 244-016 246-106 va 242-897 243-017 244-017 246-107 product codes ?long scale models bezel size mm 48 72 96 144 scale length mm 72 112 150 230 product codes a.c. current 242-05a 243-05a 244-05a 246-05a a.c. voltage 242-05v 243-05v 244-05v 246-05v speed 242-052 243-052 244-052 246-052 frequency 242-053 243-053 244-053 246-053 phase angle 242-054 243-054 244-054 246-054 watts 242-055 243-055 244-055 246-055 vars 242-056 243-056 244-056 246-056 va 242-057 243-057 244-057 246-057 connections thermocouple indicators -45tg rtd indicators -45rg connections
83 catalogue numbering system guide to catalogue numbering system ?example code: 244 ?03ag ?lspk ?c6 ?er movement code 01 short-scale ac and dc 02 ?short-scale ac 03 ? long-scale ac and dc 05 ? long-scale ac and dc 07 ? edgewise ac dc 08 ?long-scale ac 10 ? edgewise ac and dc 11 ?long-scale dc 12 ? phase sequence meter 13 ? 360 rotating iron pfi 14 ?synchroscope 15 ? elapsed time meter 16 ?thermal demand ammeter 21 ?wattmeter 30 ?meter relay 31 ?varmeter 41l ?frequency meter long-scale 41s ?frequency meter short-scale 42 ? power factor meter 45 ?rtd temperature 92 ?shunts 94 ?current transformers hw ? kilowatt hour class 1.0 kh ?kilowatt hours kw ? kilowatt hours class 2.0 type / function a amperes dc b ?rectified amperes c ? center zero amps d ? zero offset current f ?amperes ac g ?volts ac h ?high middle k ? dc input non electrical scaling l ? var self contained n ? center zero voltage p ? zero offset voltage r ? live zero current s ? live zero voltage v ?volts dc w ?rectified voltage y ? expanded scale ac z ? expanded scale dc 2 ? 2 x overload ammeters 3 ? 3 x overload ammeters 5 ? 1-phase 2-wire watts 6 ? 6 x overload ammeters 8 ? 3-phase 3-wire watts 9 ? 3-phase 4-wire watts national standard a ansi c39.1 b bs 89 g ?din i ? ansi fixing captions j ?japanese instrument standard input or movement rating la ?1a ls ?5a pz ?150v rx ?300v sj ?600v pn ?120v rp ?240v se ?480v qq ?120v 5a qs ?240v 5a qt ? 480v 5a etc scaling or output bx ? volt free relay contacts fa ?1ma hg ?4/20ma pk ?0/100 pz ?0/150 rl ?0/200 rx ?0/300 sc ?0/400 sj ?0/600 ss ?0/1000 tm ?0/2000 ub 0/4000 uj ?0/5000 etc system frequency (ac meters) c4 ?400hz c5 ?50hz c6 ?60hz c7 ?50/60hz er 244 03 a g ls pk c6 this guide is not inclusive of all catalogue numbers and should be used for reference only, as improper combinations can be achieved. series 016 fiesta 075 short-case switchboard 077 standard switchboard 078 hi-shock sealed 079 8 3 / 4 " switchboard 083 2" sealed 084 2 1 / 2 " sealed 242 48mm din 243 72mm din 244 96m din 246 144mm din e242 48mm short-scale e243 72mm short-scale e244 96mm short-scale options indicate as required
84 glossary glossary of terms mi moving iron, also called ?ron vane?in the north american market for measuring ac amps and volts. mc moving coil for measuring dc amps and volts. taut band suspension a meter movement held under tension, usually on a ligament. movement ligament the taut band. pivot and jewell (p&j) a movement which rotates on a spindle, and pivots within an oil filled jewel. this type of movement typically offers excellent vibration resistance characteristics. short-scale angle of deflection for a movement is usually 90 degrees but ansi is 100 degrees in some products. long-scale angle of deflection for a movement is usually 240 degrees but is frequently referred to as 270 degree. fsd full scale deflection. es end scale. input electrical value from which the measurement is derived to achieve the full scale deflection of the movement. linear a term used to state that the input is constant, allowing for an even scaling. non linear the opposite of linear, giving a scale shape which will cramp at some point on the dial. usually inaccurate below 20% of the full-scale value. logarithmic scaling a log scale usually derived from a non linear dc output. scale the graphical representation of the value being measured. dual arc more than one set of figures on a dial plate. dial plate/scale plate surface on which the dial is drawn. calibration chart a chart matching input values to scale mark, mainly used for complicated scales. enclosure rating usually expressed in the form of ip rating or as nema in america. this states the product, resistance to the ingress of moisture and dust. din european standard meter shape. it is based on multiplies of 24mm, i.e. 48, 72, 96, 144 mm. ansi american national instrument standard. jis japanese instrument standard. bs89 old british standard usually refers to rectangular meter or ?iesta?style products. switchboard meter general term for long-scale instruments. panel meter general name for short-scale instruments. analogue indicator generic term for instruments usually refers to a low accuracy meter. an indicator only.
analogue instruments din panel meters page 1 of 2 ref: din ? rev 1 ? sept 02 installation instructions the product should be panel mounted using the mounting hardware supplied. consideration should be given to the space behind the unit to allow for bends in the connecting cables. the terminals on the meter rear should be protected from liquids. the unit must not be mounted where it can be subjected to direct sunlight, and vibration should be kept to a minimum. connection wires must be sized to comply with local regulations and must be terminated on tags suitable for screw connection. the product has no internal fuse, therefore; external fuses must be used for safety protection under fault conditions. safety installation for compliance to saftey standards warning during normal operation, voltages hazardous to life may be present at some of the terminals of this unit. installation and servicing should be performed only by qualified, properly trained personnel' abiding by local regulations. ensure all supplies are de- energised before attempting connection or other procedures. terminals should not be user accessible after installation and external installation provisions must be sufficient to prevent hazards under fault conditions. never open circuit the secondary winding of an energised current transformer. safety standards this product complies with: international standard: iec1010-1 for uk: bs en 61010-1 (iec1010-1) fusing and connections this unit must be fitted with external fuses in voltage supply lines. voltage input lines must be fused with a quick blow fuse 1a maximum. choose fuses of a type and with a breaking capacity appropriate to the supply and in accordance with local regulations. safety specification permanently connected use. normal condition basic insulation installation category ii pollution degree 2 this product is intended as part of a permanent installation. low voltage directive bsen 61010-1 for use in altitudes up to 2000m temperature 0-40 degree c maximum relative humidity 80% for temperature up to 31o c decreasing linearly to 50% rh at 40oc operating temperature to retained stated product accuracy 0-40oc electromagnetic compatibility this unit has been designed to provide protection against em (electro-magnetic) interference in line with requirements of eu and other regulations. precautions necessary to provide proper operation of this and adjacent equipment will be installation dependent and so the following can only be general guidance:- avoid routing wiring to this unit alongside cables and products that are, or could be, a source of interference. the auxiliary supply to the unit should not be subject to excessive interference. in some cases, a supply line filter may be required. to protect the product against incorrect operation or permanent damage, surge transients must be controlled. it is good emc practice to suppress differential surges to 2kv or less at the source. the unit has been designed to automatically recover from typical transients, however in extreme circumstances it may be necessary to temporarily disconnect the auxiliary supply for a period of greater than 5 seconds to restore correct operation. screened communication and small signal leads are recommended and may be required. these and other connecting leads may require the fitting of rf suppression components, such as ferrite absorbers, line filters etc., if rf fields cause problems. it is good practice to install sensitive electron ic instruments that are performing critical functions in emc enclosures that protect against electrical interference causing a disturbance in function.
tyco electronics uk limited crompton instruments freebournes road, witham, essex, cm8 3ah, uk phone: +44 1376 509 509 fax: +44 1376 509 511 http://energy.tycoelectronics.com the information contained in these installation instructions is for use only by installers trained to make electrical power installations and is intended to describe the correct method of installation for this product. however, tyco electronics has no control over the field conditions, which influence product installation. it is the user's responsibility to determine the suitability of the installation method in the user's field conditions. tyco electronics' only obligations are those in tyco electronics' standard conditions of sale for this product and in no case will tyco electronics be liable for any other incidental, indirect or consequential damages arising from the use or misuse of the products. crompton is a trademark. analogue instruments din panel meters page 2 of 2 ref: din ? rev 1 ? sept 02 installation instructions d a b 48 x 48 45 x 45 4 72 x 72 68 x 68 4 96 x 96 92 x 92 4 144 x 144 135 x 135 4
analogue instruments din instruments 240 series & ansi switchboard meters 070 series led synchroscope & synchrocheck relay with dead bus page 1 of 2 ref: iwysnc ? rev 6 ? sept 02 installation instructions products covered model description 244-14a) single phase or 3 phase 3/4 wire led 077-14a) - synchroscope 244-14l) single phase or 3 phase 3/4 wire led 077-14l) - synchroscope and synchro check relay 244-14g) 244-14l with voltage difference input range 244-14h 244-14d with voltage difference input range 244-14d) single phase or 3-phase 3/4 wire led 077-14d) - synchroscope and synchro check relay with deadbus introduction 244 models may be mounted in a panel of any thickness up to a maximum of 12mm. mounting is by two clamps and thumbscrews. 077 models may be mounted in a panel thickness up to a maximum of 8mm (5/16?). mounting is by 4 x 1/4 - 28 unf studs and nuts. for all models consideration should be given to the space required behind the units to allow for bends in the connecting cables. additional protection to the panel may be obtained by the use of an optional gasket. the terminals at the rear of the case should be protected from liquids. units should be mounted in a reasonably stable ambient temperature and in any event where the temperature is within the range 0-60 oc. the unit should not be mounted where it is subjected to excessive direct sunlight; vibration should be kept to a minimum. connection wires should be sized to comply to local regulations and should be terminated in tags suitable for the crew connections provided, labels are fixed to the units and carry full connection information and data including type number, input voltage, current, frequency and supply as appropriate. the products do not have internal fuses therefore external fuses must be used for safety protection under fault conditions. fusing and connections 1. this unit must be fitted with external fuses in voltage supply lines. 2. voltage input lines must be fused with a quick blow fuse 1a maximum. 3. choose fuses of a type and with a breaking capacity appropriate to the supply and in accordance with local regulations. warning during normal operation, voltages hazardous to life may be present at some of the terminals of this unit. installation and servicing should be performed only by qualified, properly trained personnel' abiding by local regulations. ensure all supplies are de-energised before attempting connection or other procedures. it is recommended adjustments be made with the supplies de-energised, but if this is not possible, then extreme caution should be exercised. terminals should not be user accessible after installation and external installation provisions must be sufficient to prevent hazards under fault conditions. this unit is not intended to function as part of a system providing the sole means of fault protection - good engineering practice dictates that any critical function be protected by at least two independent and diverse means. screw torque main terminal screws should be tightened to 1.35nm or 1.0 ft/ lbf only. detachable terminal connector screws should be tightened to 0.9nm or 0.7 ft/ lbf only. where fitted, terminal covers are held in place by miniature self tapping screws into plastic. these screws should be tightened by hand only, sufficiently to secure the terminal cover and prevent it vibrating. electromagnetic compatibility this unit has been designed to provide protection against em (electro-magnetic) interference in line with requirements of eu and other regulations. precautions necessary to provide proper operation of this and adjacent equipment will be installation dependent and so the following can only be general guidance :- avoid routing wiring to this unit alongside cables and products that are, or could be, a source of interference. the auxiliary supply to the unit should not be subject to excessive interference. in some cases, a supply line filter may be required. to protect the product against incorrect operation or permanent damage, surge transients must be controlled. it is good emc practice to suppress differential surges to 2kv or less at the source. the unit has been designed to automatically recover from typical transients, however in extreme circumstances it may be necessary to temporarily disconnect the auxiliary supply for a period of greater than 5 seconds to restore correct operation. screened communication and small signal leads are recommended and may be required. these and other connecting leads may require the fitting of rf suppression components, such as ferrite absorbers, line filters etc., if rf fields cause problems. it is good practice to install sensitive electronic instruments that are performing critical functions in emc enclosures that protect against electrical interference causing a disturbance in function.
tyco electronics uk limited crompton instruments freebournes road, witham, essex, cm8 3ah, uk phone: +44 1376 509 509 fax: +44 1376 509 511 http://energy.tycoelectronics.com the information contained in these installation instructions is for use only by installers trained to make electrical power installations and is intended to describe the correct method of installation for this product. however, tyco electronics has no control over the field conditions, which influence product installation. it is the user's responsibility to determine the suitability of the installation method in the user's field conditions. tyco electronics' only obligations are those in tyco electronics' standard conditions of sale for this product and in no case will tyco electronics be liable for any other incidental, indirect or consequential damages arising from the use or misuse of the products. crompton is a trademark. analogue instruments din instruments 240 series & ansi switchboard meters 070 series led synchroscope & synchrocheck relay with dead bus page 2 of 2 ref: iwysnc ? rev 6 ? sept 02 installation instructions setting up and maintenance units are adjusted before despatch and therefore no adjustments are required. unless a fault develops, the unit requires little attention. during routine servicing and inspection of the associated equipment, the unit should be inspected to normal standards for this class of equipment. for example remove accumulations of dust and check all connections for tightness and corrosion. in the event of a repair being necessary, it is recommended that the unit be returned to the factory or to the nearest crompton instruments service centre, (details on page 2). should repair be attempted then replacement components must be of the same type, rating and tolerance as those used in the original circuit. it is important that should calibration be deemed necessary, say after repair, then this should only be attempted if the required high accuracy equipment is available. with any enquiry please quote the full model number found on the side of the label. the unit must be recalibrated after repair. the operation as a synchroscope the 244-14a and 077-14a synchrocopes provide illuminated indication of the actual phase difference between the generator gen voltages and the busbar voltage. if the led display rotates clockwise the generator frequency is too high and must be reduced and visa versa if the led display turns anticlockwise. the operation as synchrocheck relay the 244-14l/g and 077-14l synchroscopes are based on a microcontroller, which interprets the input signals and displays the phase and voltage information on a series of light emitting diodes (led?s). twenty four red led?s are arranged in a ring simulating the traditional 360 analogue movement. only one led is lit at any one time indicating the phase difference between the busbar (bus) and generator (gen) signals. the unit will operate correctly at any frequency within its range. the voltage levels of the two input signals are continuously measured and compared with the user adjustable voltage difference setting. if the measured difference is outside the allowable range, the ring of led?s will be extinguished and the red gen led will be lit. if the voltage difference is within range the green gen led will be lit and the ring of led?s will indicate the phase relationship. once the bus and gen signals become coincident, the unit will wait for an adjustable time delay before lighting the green triangular synchronised leds and operating the relay. the ring of led is also extinguished which means the user will only see green led?s when the generator gen is synchronised with the bus. the rear pot adjustments should be set to suit operational requirements. the operation as synchro check relay with dead bus the 244-14d/h and 077-14d operate in the same way as the 244-14l and 077-14l synchro check relays with the addition of a dead bus option. this optional feature enables the relay to energise with a gen supply only thus allowing the generator to power the bus during a supply failure. connection diagrams model 244-14a 360 led synchroscope & models 244- 14l/d/g/h 360 led synchroscope and synchro check relay relay ratings single pole changeover 250v, 5a a.c. resistive. model 077-14a 360 led synchroscope & 360 led synchroscope and synchro check relay models 077- 14l/d/g/h installation instructions nc = normally closed co = common no = normally open terminals 1,3 & 4 are not used on model 244-14a. ?gen? l1 l2 l3 ?bus? l1 l2 l3 terminals 3, 10 and 12 are not used on model 077-14a. 2 6 12 3 5 1 relay l o a d l o a d nc = normally closed co = common no = normally open nc c no 10

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