FAS-115DG, Installation Instructions 4189340127 UK

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  DEIF A/S Tel: (+45) 9614 9614 Frisenborgvej 33, DK-7800 Skive Fax: (+45) 9614 9615 Denmark E-mail:      D   E   I   F   A   /   S  Installation and start up instructions Synchroniser type FAS-115DG uni-line 4189340127H (UK) ã    Synchronisation of generator to busbar ã    With voltage matching ã    Circuit breaker time compensation ã    LED indication of status ã    LED indication for synchronising signal ã    35 mm DIN rail or base mounting      Page 2 of 5 Tel.: (+45) 9614 9614 ã  Fax: (+45) 9614 9615 ã  E-mail: Measuring voltageType designationDEIF’s order ack. No.To be stated when contacting DEIFMounted voltage module(E.g.special circuit breaker time, etc.)Distributor’s ID No.Filled in by distributor  when customizing the unit.Installation categoryHighest voltagein relation to earthSupply voltage   1. Description This synchroniser with voltage matching type FAS-115DG forms part of a complete DEIF series (the uni-line ) of relays for protection and control of generators. The FAS-115DG synchroniser measures the busbar and generator voltages and frequencies and compares these, plus compares their phase angles. It controls the generator frequency and voltage, till they match the busbar values . In order to determine phase accordance between the generator and the busbar, the synchroniser calculates a phase angle advance based on the circuit breaker closing time and the slip frequency. When the phase difference is within this “tolerance”, the synchroniser transmits a closing signal for the generator circuit breaker – allowing time for this to close. 2. Label The synchroniser is provided with a label with the following data: 3. Mounting instructions   The FAS-115DG is designed for panel mounting, being mounted on a 35 mm DIN rail, or by means of two 4-mm screws. Weight:  Approx. 0.750 kg    Installation and start up instructions FAS-115DG   4189340127HUK   The design of the synchroniser makes mounting of it close to other uni-line  units possible, however make sure there are min. 50 mm between the top and bottom of this relay and other relays/units. The DIN rail must always be placed horizontally when several relays are mounted on the same rail. 4. Connection diagram    All voltage inputs may be pro-tected by a 2A fuse. The synchroniser is protected against ESD (electrostatic electri-city), and further special protection against this during the mounting of the unit is not necessary. The FAS-115DG may be connect-ed between 2 phases or between 1 phase and neutral. The synchroniser is to be configured so that the input of the FAS-115DG corresponds to the connected voltages.   The relay contacts mrk. “SG” (term. Nos. 38 + 39 and 40 + 41) provide relay signals for increase and decrease of the speed, respectively, and those mrk. ”AVR” (term. Nos. 43 + 44 and 45 + 36) relay signals for increase and decrease of the voltage, respectively. The life of the built-in relays is considerably reduced when connected to inductive loads. Especially for DC controlled pilot/servomotors, external auxiliary relays should therefore always be mounted. Mounting a “transient suppressor” across the coils of the auxiliary relays is likewise recommended. During start up activating the inhibit function (by short-circuiting term. Nos. 34 and 35) is recommended. This function disables the “SYNC” relay contact, to which the circuit breaker is connected (term. Nos. (8), 9 and 10) .  When the FAS-115DG is applied for simultaneous synchronisation of all generators of a plant to the busbar, the FS line of the load sharing units type LSU… is connected to terminals Nos. 36 and 35. The unit is equipped with a self-monitoring function. The self-monitoring function supervises the microprocessor and hereby verifies if the programme is running correctly. Power LED Status output Supply voltage not connected or not acceptable OFF OFF Supply voltage is accepted and the unit is running correctly Constant green light ON Supply voltage is accepted but the unit is running wrongly Flashing green light 2-3Hz OFF    Page 4 of 5 Tel.: (+45) 9614 9614 ã  Fax: (+45) 9614 9615 ã  E-mail: GL applications only:  For applications approved by “Germanischer Lloyd” the status output must be connected to an alarm system. For applications with more than one uni-line  product the status outputs of the units can be connected in series to the same alarm input. When the units are connected in series the flashing green power LED will indicate the unit that is running wrongly. 5. Start up instructions 5.1 Setting and indication   Setting of Range T N  Control pulse length 25…500 ms X p  Proportional band ± 0.25… ± 2.5Hz f  set  Slip frequency 0.1…0.5Hz ∆ U max  Acceptable voltage difference ± 2… ± 12% of U BB  T BC  Breaker closure time 20…200 ms LEDs Light U G  Generator voltage* U BB  Busbar voltage* ∆ f Frequency difference* ∆ U Voltage difference* Green, when value is within the acceptable range Switched off, if outside this range SYNC Synchronising SG ▲  Increasing speed (frequency) SG ▼  Decreasing speed (frequency)  AVR ▲  Increasing voltage  AVR ▼  Decreasing voltage Yellow, when relay is activated *) When all 4 LEDs are lit, the conditions for transmission of synchronisation pulses are fulfilled. Note: In addition to the status (4 conditions above) the FAS-115DG supervises the actual df/dt (ROCOF). If this is too great, no synchronisation pulses will be transmitted, and the ∆ f LED flashes. The allowable df/dt ratio depends on the f  set  setting: f  set  0.1Hz corresponds to a df/dt ratio of max. 2.5Hz/s. f  set  0.5Hz corresponds to a df/dt ratio of max. 12.5Hz/s. The T N  and X p  should be set during the start up. Correct setting of these is of major importance, to ensure a stable control of the generator. T N  determines the duration of the control pulse. A short T N  is applied for very swiftly reacting speed governors, a long T N  for slowly reacting speed governors. Recommended starting point: 0.2 s. If the frequency tends to oscillate around the f  set  value: - Reduce T N  (min. pulse: 25 ms), until stable control is obtained, - then reduce X p  (e.g. to ± 1Hz), until the control loop becomes unstable again  – and select a suitable X p  value between these values (e.g. ± 1.5Hz).
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