User manual MERLIN GERIN VARSET A1 CUBICLE

[. . . ] Any modification to the equipment jeopardizes its warranty. 2 AAV31918_00 Description b voltage, frequency, power, as per rating plate b rating tolerances: -5, +10 % b allowable voltage overload (8 h out of 24 h as defined in IEC 831-1/2): 10 % b insulation voltage: 690 V v 50 Hz, 1 min withstand: 2. 5 kV b ambient temperature in premises: v maximum temperature: 40 °C v average temperature over a 24 hour period: 35 °C v average temperature over a 1 year period: 25 °C v minimum temperature: -5 °C b maximum dissipated power: v 2. 7 W/kVAr for Classic cubicles v 3. 1 W/kVAr for Comfort cubicles v 8. 7 W/kVAr for Harmony cubicles b protection degree: IP31 (apart for the ventilator outlet: IP21D) b load shedding (normal-standby) b colour: v sheet steel: RAL 9001 v base: RAL 7021 b compliant with IEC 60439-1 and IEC 61921. DB110688 Technical characteristics Fig. 1: electrical layout diagram, Classic and Comfort cubicles. DB110689 Fig. 2: electrical layout diagram, Harmony cubicles. AAV31918_00 3 Description (cont. ) C2 panel DB110699 Sizes and weights (Figs. [. . . ] For A4 cubicles, the supply is spread over two columns. Tightening torques b cables connected to terminal blocks must be tightened to 42 Nm max. For cables connected to circuit-breakers, refer to the user guide. 8 DB108761 AAV31918_00 Commissioning DB108763 Configuring the Varlogic controller NR6/NR12 Setting the controller The varmetric controller has been configured in accordance with the capacitor bank's characteristics. The only operations that have to be carried out during commissioning are: b target cos setting if necessary b current transformer ratio configuration. Important: b if supplied by a summing CT (installation with several incoming transformers), it is the sum of the ratios of the different measurement CTs that must be taken into consideration b for an installation equipped with a generator set (load shedding), the capacitor bank must be taken out of circuit, by breaking the supply to the controller, before switching to the generator set. See page 7, "connection of current circuit". Controller front face. Commissioning the capacitor bank When first energised, the controller will immediately ask you to enter the user language. Choose the desired language using the keys pressing Enter. + and The parameters needed for correct capacitor bank operation are factory set. Some parameters depend on the installation's characteristics and must be modified on-site during commissioning b target cos (default value = 1) b current transformer ratio in order to display the measured values correctly b response current (C/K): this value is automatically searched for during the checking phase. In particular, the time delay must never be less than 50 s, otherwise there is a risk the capacitor bank will incur serious damage and will no longer be covered by the warranty. b the "MIS. SERV" menu must be used to launch the commissioning sequence. The sequence includes the configuration of cos and the transformation ratio, as well as an automatic check that the parameters entered are compatible with the installation's actual parameters. Note : if an alarm appears during commissioning or when first used, refer to the "faults and solutions" paragraph to determine its origin. Checking correct operation b check that cos corresponds to the required value b if operating on full load, check the switched stepping functions correctly b after several hours' operation, check the temperature in the premises. For a better understanding of the parameters to be defined, refer to the Glossary (Chapter 7) in the controller manual. AAV31918_00 - then validate by 9 Commissioning (cont. ) DB108779 Commissioning a pre-configured capacitor bank. What to do in the event of an error? "Error codes" allow a diagnosis to be made and a solution to be found. After checking the installation, re-launch the "MIS. SERV" sequence or the commissioning with automatic configuration "REG. AUTO" sequence. If the controller is not solicited for a long period when a menu is run, it may display the message "I FAIBLE" To return to the commissioning ("MIS. SERV") menu, or any other menu, press esc and then scroll through the menus to obtain the one required. 10 AAV31918_00 Commissioning (cont. ) PB100045-55 Configuring the Varlogic controller RT6 Setting the controller The varmetric controller has been configured in accordance with the capacitor bank's characteristics. The only operations that have to be carried out during commissioning are: b target cos setting if necessary b current transformer ratio configuration. [. . . ] 26: break the triangle links. Safety All the operations described in this guide must be carried out whilst respecting current safety standards, and under the responsibility of a competent authority. AAV31918_00 15 Maintenance (cont. ) Working on the current circuit Before starting work DB109732 DB109733 DB109734 DB109735 Initial state. A : separator B : jumper K : S1 terminal on CT L : S2 terminal on CT Fig. 27. Remove the separator from the circuit A. Use the jumper B to link terminals K and L of the terminal block (terminals S1 and S2 of the CT). Final state. Warning Risk of destroying the current transformer if the secondary is open-circuit. After finishing work DB109735 DB109736 DB109737 DB109738 Initial state. Fig. [. . . ]