Carrier 30RBM 160 Installation, Operation And Maintenance Instructions

Also see for 30RBM 160: Installation, operation and maintenance instructions

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Carrier 30RBM 160 Installation, Operation And Maintenance Instructions Manual pdf 21 page image

216 - ELECTRICAL CONNECTIONPlease refer to the certified dimensional drawings, suppliedwith the unit.6.1 - Power supplyThe power supply must meet the specification on the unit'snameplate.The supply voltage must be within the range specified in theelectrical data table.For connections, refer to the wiring diagrams and certifieddimensional drawings.WARNING:Operation of the unit with an incorrect supply voltage orexcessive phase imbalance constitutes misuse which willinvalidate the manufacturer's warranty. If the phase imbalanceexceeds 2% for voltage, or 10% for current, contact your localelectricity supplier at once and ensure that the unit is notswitched on until corrective measures have been taken.After the unit has been started up, the power supply must onlybe disconnected for quick maintenance operations (one daymaximum). For longer maintenance operations or when the unitis placed in storage (for example, during winter when the unitdoes not need to generate cooling) the power supply of the unitmust be maintained permanently6.2 - Voltage phase imbalance (%)100 x max. deviation from average voltageAverage voltageExample:On a 400 V - 3 ph - 50 Hz supply, the individual phase voltageswere measured with the following values:AB = 406 V; BC = 399 V; AC = 394 VAverage voltage = (406 + 399 + 394)/3= 1199/3= 399.7 say 400 VCalculate the maximum deviation from the 400 V average:(AB) = 406 - 400 = 6(BC) = 400 - 399 = 1(CA) = 400 - 394 = 6The maximum deviation from the average is 6 V. The greatestpercentage deviation is: 100 x 6/400 = 1.5 %This is less than the permissible 2% and therefore acceptable.6.3 - Recommended wire sectionsWire sizing is the responsibility of the installer, and dependson the characteristics and regulations applicable to eachinstallation site. The following is only to be used as a guideline,and does not engage the manufacturer's liability.After wire sizing has been completed, using the certifieddimensional drawing, the installer must verify the appropriatemeans of connection and define any modifications necessaryon site.The connections provided as standard for the customer's powersupply cables are designed for the number and type of sectionslisted in the table below.The calculations of favourable and unfavourable cases areperformed by using the maximum current possible of each unitfitted with a hydronic kit (see the tables of electrical data ofthe unit and the hydronic module).The study includes the standardised installation cases accordingto IEC 60364: cables with PVC (70°C) or XLPE (90°C)insulation with copper core; routing in accordance with table52C of the standard.The maximum length mentioned is calculated to limit thevoltage drop to 5 %.IMPORTANT:Before connecting the main power cables (L1 - L2 - L3),always check 3 phases are in the correct order (clockwise)before proceeding to the connection on the main disconnectswitch.MotorTable of minimum and maximum cable sections (per phase) for connection to the unitsMax. connectable section (1) Calculation of favourable case:- Suspended overhead line (standardisedrouting no. 17)- Cable with XLPE insulationCalculation of unfavourable case:- Conductors in ducts or multi-conductor cables inclosed conduits (standardised routing no. 41)- Cable with PVC insulation, if possible30RBM/30RBPStandard lug Narrow lug Recommendedmax lug widthSection (2) Max lengthfor a voltagedrop < 5%Cable type(3) Section (2) Max length fora voltage drop< 5%Cable type(3)mm² (per phase) mm² (per phase) mm mm² (per phase) m - mm² (per phase) m -160 2x70 2x95 21 1 x 50 180 XLPE Copper 2 x 50 350 PVC Copper180 2x70 2x95 21 1 x 50 170 XLPE Copper 2 x 50 320 PVC Copper200 2x70 2x95 21 1 x 70 205 XLPE Copper 2 x 70 380 PVC Copper220 2x70 2x95 21 1 x 70 190 XLPE Copper 2 x 70 350 PVC Copper260 2x70 2x95 21 2 x 50 220 XLPE Copper 2 x 70 300 XLPE Copper300 2x70 2x95 21 2 x 50 200 XLPE Copper 2 x 70 270 XLPE Copper330 2x70 2x95 21 2 x 70 240 XLPE Copper 2 x 95 310 XLPE Copper360 2x95 2x185 24,5 2 x 70 220 XLPE Copper 2 x 95 280 XLPE Copper400 2x95 2x185 24,5 2 x 70 200 XLPE Copper 2 x 120 310 XLPE Copper430 2x95 2x185 24,5 2 x 95 240 XLPE Copper 2 x 150 340 XLPE Copper470 2x240 2x240 37 2 x 95 220 XLPE Copper 2 x 150 320 XLPE Copper520 2x240 2x240 37 2 x 120 240 XLPE Copper 2 x 185 330 XLPE CopperNOTES:(1) Connection capacities actually available for each unit. These are defined according to the connection terminal size, the electrical box access opening dimensions and the available space inside theelectrical box.(2) Selection simulation result considering the hypotheses indicated.(3) If the maximum calculated section is for an XLPE cable type, this means that a selection based on a PVC cable type can exceed the connection capacity actually available. Special attention must begiven to selection.The protection against direct contact at the electrical connection point is compatible with the addition of fanout cables. The installer must determine whether these are necessary based on the cablesizing calculation.