240 Series DIN Panel Meters 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 Features In Crompton Instruments’ world-patented ‘Hi-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. An extensive range of specialist measuring meters in 4 case sizes Dials, Scales and Pointers Terminal covers supplied as standard 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. Benefits Illumination Low cost Customised options and features 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. Applications Specification Shock resistant taut band suspension Vibration-proof Hi-Q damping Slide in dials for 90°current, voltage and frequency on models 242, 243 and 244 Local indication Ease of installation Minimal training Low maintenance Switchgear Distribution systems Generator sets Control panels Energy management Building management Utility power monitoring Process control Motor control Approvals LRS and BV Approvals. Performance Measuring Ranges Accuracy Overload Dimensions Scale Marking Generally Magnetic Influence Safety Terminals Humidity Range Test Voltage @50Hz Overload AC Current Overload AC Voltage Frequency Damping Time Standard Calibration Operating Temperature Enclosure Code BSEN60051 DIN 43701 BSEN60051 DIN 43700 DIN43802 BSEN60051 IEC414 Clamp strap M4 up to 25A. Clamp strap M8 over 25A Up to 95% RH (non condensing) 2kV RMS for 1 minute x 1.2 continuous x 10 for 5 seconds x 1.2 continuous x 2 for 5 seconds See main pages for other instruments Less than 3 seconds is standard. More heavily damped movements are available on request. 23°C -20°C to +60°C IP54 as standard (to BSEN60529). IP55 consult factory Terminals IP20B with terminal cover or terminal boots fitted Grade UL94V0 Grade UL94V1 Case Base 8 240 Series DIN Panel Meters DIN 16257 symbol meaning for calibration position Specification Continued Case Vertical Bezel Bezel Window Horizontal Installation 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. Fixing on Panel Mounting Position Approvals 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. Slim-line DIN43802 black as standard Standard sheet glass, with zero adjusters where appropriate. Non reflecting glass or polycarbonate shatterproof windows are available. 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 Models 242, 243 and 244 – 2 corner fixing clamps and tensioning thumb screws Model 242 – available with a one piece ‘push on’ clamp. Model 246 - 2 side fixing spring clips Normal vertical mounting or as indicated on the scale in accordance with DIN 16257. A deviation of ±15° is permissible Lloyds Shipping (LRS), Bureau Veritas (BV), EMC and LVD Dimensions C A A Panel cut-out Maximum Panel thickness 10mm B B Model Bezel ‘A’ Panel cut-out ‘B’ Scale Length: 90° Scale Length: 240° Maximum overall depth ‘C’: Ammeters and Voltmeters A.C. & D.C.* Ammeters and Voltmeters with switch* Dual Meters* Elapsed Time Meter/Hours Run* Maximum Demand Indicator* Combined MDI & MI Indicator* Maximum Demand Indicator with relay* Frequency Meter 90°* Frequency Meter 240°* Phase Angle, Power Factor Meter 90°* 240°* M.C. Indicator with separate transducer* Dynamometer 360° Synchroscope* Dynamometer 360° Power Factor Meter* Phase Sequence Indicator* Position Indicator* Speed Indicator* Temperature Indicators* Quadra Meters* Impulse Counters* Wattmeter, Varmeter 90° Wattmeter, Varmeter 240° Model 244-21Y & 244-21Z LED Synchroscope & Synchro Check Relay LED 360° Synchroscope § * – 242 48 x 48 45 x 45 42 72 243 72 x 72 68 x 68 65 112 244 96 x 96 92 x 92 94 150 246 144 x 144 138 x 138 145 230 64 – – 64 – – – 64 § § § 64 – – – § 64 – – 64 § § – – – 64 – – 64 64 – – 64 § § § 64 – – 64 § 64 – – 64 § § – – – 64 64 64 64 64 64 90 64 120 107 107 64 120 120 64 120 64 120 64 64 107 107 142 80 80 60 – – – 60 60 – 60 125 § § 60 125 – – 125 60 125 – – 125 125 – – – Indicator Only If separate terminal cover is used add 20 mm to dimension C Not available 9 240 Series DIN Panel Meters 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: Frequency: Burden at 50Hz: Class 1.5 50 or 60Hz, (400Hz on request) Ammeters: 0.5VA Voltmeters: Up to 4.5VA maximum 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 Ratings: Connections A.C. Ammeter Product Codes – Short Scale Bezel Size mm Scale length mm Product Codes A.C. ammeter x2 overload ammeter x3 overload ammeter x5 overload ammeter x6 overload ammeter Low load ammeter A.C. voltmeter Low middle voltmeter 48 42 72 65 96 94 144 145 242-75A 242-752 242-753 242-755 242-756 – 242-75V – 243-02A 243-022 243-023 243-025 243-026 243-02H 243-02V 243-02M 244-02A 244-022 244-023 244-025 244-026 244-02H 244-02V 244-02M 246-07A 246-072 246-073 246-075 246-076 – 246-07V – Specification – Long Scale A.C. Voltmeter Accuracy: Frequency: Burden at 50Hz: Class 1.5 50 or 60Hz, (400Hz on request) Ammeters: 1.5VA Voltmeters: 4.5VA maximum 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. Ratings: Product Codes – Long Scale Bezel Size mm Scale length mm Product Codes Ammeter x2 overload ammeters x3 overload ammeters x5 overload ammeters x6 overload ammeters Low load ammeters Voltmeter 10 48 72 72 112 96 150 144 230 242-03A 242-032 242-033 242-035 242-036 – 242-03V 243-03A 243-032 243-033 243-035 243-036 243-03H 243-03V 244-03A 244-032 244-033 244-035 244-036 244-03H 244-03V 246-03A 246-032 246-034 246-035 246-036 – 246-03V 240 Series DIN Panel Meters 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 45/55Hz, 55/65Hz, 45/65Hz, 360/440Hz Other scalings available on request 4VA Maximum Frequency 0.5%: Connections Burden: Product Code Bezel Size mm 48 48 72 72 Scale length mm 42 72 65 112 Product Code 242-41S 242-053 243-41S 243-053 +253-THZ +253-THZ 96 96 144 144 94 145 244-41S 244-41L 246-41S 246-41L 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: Ratings: Class 0.5 100V-125V A.C 200V-250V A.C. 380V-440V A.C. 500V A.C. Models available for use with V.T.s 45/55Hz, 55/65Hz, 45/65Hz, 360/440Hz 4VA Maximum Frequency 0.5%: Connections Burden: Product Code Bezel Size mm Scale length mm Product Code 96 65 244-41D 12 240 Series DIN Panel Meters 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: Ratings: Connections D.C. Ammeter Class 1.5 Ammeters: 100µA to 25A, (200µA 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 Ammeters: 75mV internal shunt above 60mA Voltmeters: 1000Ω/V above 1V Impedance: Further details on our T-Sheet T118 available on request. Product Codes – Short Scale D.C. Voltmeter Bezel Size mm Scale length mm Product Codes Ammeters Ammeters suppressed zero Voltmeters Voltmeters suppressed zero 48 42 72 65 96 94 144 145 242-89A 242-89R 242-89V 242-89S 243-01A 243-01R 243-01V 243-01S 244-01A 244-01R 244-01V 244-01S 246-10A 246-10R 246-10V 246-10S 48 72 72 112 96 150 144 230 242-05A 242-05R 242-05V 242-05S 243-05A 243-05R 243-05V 243-05S 244-05A 244-05R 244-05V 244-05S 246-05A 246-05R 246-05V 246-05S Product Codes – Long Scale Bezel Size mm Scale length mm Product Codes Ammeter Ammeters suppressed zero Voltmeters Voltmeters suppressed zero 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 Connections Accuracy: Ratings: Class 1.5 D.C. Current: 100µA 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. Dual D.C. Ammeter Product Codes Dual D.C. Voltmeter Bezel Size mm Scale length mm Product Code Ammeters Voltmeters 96 94 244-80M 244-80E 18 240 Series DIN Panel Meters 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 10Ω copper 100Ω platinum, 100 & 120Ω nickel sensors Power in RTD is 100µW approximately. Thermocouple indicator suitable for J (0-700°C), K (0-1200°C) 50Ω maximum Circuit Resistance. 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. -45R 2VA, -45T 3VA Auxiliary Supply: Connections Thermocouple Indicators -45TG Burden: Product Codes Bezel Size mm Scale length mm Product Codes RTD Thermocouple RTD Indicators -45RG 96 150 144 230 244-45R 244-45T 246-45R 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: Ratings: Burden: Class 1.5 1, 2, 5, 10 & 20mA. 4/20mA suppressed zero. See our technical data sheet T118. Product Codes – Short Scale Models Bezel Size mm Scale length mm Product Codes A.C. Current A.C. Voltage Speed Frequency Phase Angle Watts VArs VA 48 42 72 65 96 94 144 145 242-89A 242-89V 242-892 242-893 242-894 242-895 242-896 242-897 243-01A 243-01V 243-012 243-013 243-014 243-015 243-016 243-017 244-01A 244-01V 244-012 244-013 244-014 244-015 244-016 244-017 246-10A 246-10V 246-102 246-103 246-104 246-105 246-106 246-107 48 72 72 112 96 150 144 230 242-05A 242-05V 242-052 242-053 242-054 242-055 242-056 242-057 243-05A 243-05V 243-052 243-053 243-054 243-055 243-056 243-057 244-05A 244-05V 244-052 244-053 244-054 244-055 244-056 244-057 246-05A 246-05V 246-052 246-053 246-054 246-055 246-056 246-057 Product Codes – Long Scale Models Connections Bezel Size mm Scale length mm Product Codes A.C. Current A.C. Voltage Speed Frequency Phase Angle Watts VArs VA 19 Catalogue Numbering System Guide to Catalogue Numbering System – Example Code: 244 – 03AG – LSPK – C6 – ER 244 03 SERIES 016 – Fiesta 075 – Short-case switchboard 077 – Standard switchboard 078 – Hi-shock sealed 079 – 83/4" switchboard 083 – 2" sealed 084 – 21/2" 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 A G 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 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 LS PK 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 NATIONAL STANDARD A – ANSI C39.1 B – BS 89 G – DIN I – ANSI fixing captions J – Japanese instrument Standard ER C6 OPTIONS Indicate as required SYSTEM FREQUENCY (AC Meters) C4 – 400Hz C5 – 50Hz C6 – 60Hz C7 – 50/60Hz 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 This guide is not inclusive of all catalogue numbers and should be used for reference only, as improper combinations can be achieved. 83 Glossary Glossary of Terms MI Moving iron, also called ‘iron vane’ in the North American market for measuring AC amps and volts. MC Moving coil for measuring DC amps and volts. Taut band suspension movement A meter movement held under tension, usually on a ligament. 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 “Fiesta” 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. 84 INSTALLATION INSTRUCTIONS Page 1 of 2 Ref: DIN – Rev 1 – Sept 02 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. Analogue Instruments DIN Panel Meters 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 SAFETY INSTALLATION FOR COMPLIANCE TO SAFTEY STANDARDS • WARNING 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. • • • 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 deenergised 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. Page 2 of 2 INSTALLATION INSTRUCTIONS Ref: DIN – Rev 1 – Sept 02 Analogue Instruments DIN Panel Meters 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 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. 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 INSTALLATION INSTRUCTIONS Page 1 of 2 Ref: IWYSNC – Rev 6 – Sept 02 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. Analogue Instruments DIN Instruments 240 Series & ANSI Switchboard Meters 070 Series LED Synchroscope & Synchrocheck Relay with Dead Bus • • • 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. INSTALLATION INSTRUCTIONS Page 2 of 2 Ref: IWYSNC – Rev 6 – Sept 02 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. Analogue Instruments DIN Instruments 240 Series & ANSI Switchboard Meters 070 Series LED Synchroscope & Synchrocheck Relay with Dead Bus The Operation as Synchro Check Relay with Dead Bus Relay Ratings Single pole changeover 250V, 5A a.c. resistive. Model 077-14A 360° LED Synchroscope & 360 LED Synchroscope and Synchro Check Relay Models 07714L/D/G/H 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‘GEN’ 14L/D/G/H 360 LED Synchroscope and Synchro‘BUS’ Check L1 L2 L3 L1 L2 L3 relay NC 12 C NO 3 Relay 6 10 5 L O A D 2 1 INST NC = Normally closed CO = Common NO = Normally open L O A D Terminals 3, 10 and 12 are not used on Model 077-14A. Terminals 1,3 & 4 are not used on Model 244-14A. NC = Normally closed CO = Common NO = Normally open 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. 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