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242-03V Datasheet(PDF) 11 Page - Tyco Electronics |
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242-03V Datasheet(HTML) 11 Page - Tyco Electronics |
11 / 12 page 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. |
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