Danfoss scroll VSH serie -
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ENGINEERING ^/J-nrJfjW^ Application guidelines Inverter scroll compressors

Application Guidelines

Application Guidelines

Application Guidelines Reinforced high grade ductile cast iron scroll set. Oil circulation at high speed is minimized by separating oil and gas flows with an oil return tube to the sump A patented oil injection system ensures that scrolls are optimally lubricated at all compressor speeds. Oil injection is controlled by the frequency converter, avoiding increases in oil circulation ratio at high speeds. A newly developed gerotor oil pump ensures low speed bearing lubrication. Oil strainer controls risk of system debris in oil injection circuit.

Application Guidelines Inverter compressors Compressor size Inverter technology offers more flexibility in compressor selection than fixed speed compressors. Selection of the right inverter compressor size can be done by different methods: 1. Maximum cooling capacity: Select a compressor size which achieves the peak load system cooling capacity demand at its maximum speed. 2. Nominal cooling capacity: Select a compressor size which achieves the nominal system cooling capacity at a rotational speed of 3600 - 4500 rpm (60-75 Hz). Frequency converter variants Different frequency converter...

Application Guidelines Compressor nomenclature Variable speed Family, Lubricant SH scroll, POE lubricant R410A refrigerant Motor protection type N: no internal motor protection (protection by drive) Equipment version A: brazed connections Swept volume in cm3/rev Standard approval UL index Motor voltage code * J: 200-240V / 3 ph / 50 & 60 Hz G: 380-480V / 3 ph / 50 & 60 Hz H: 525-600V / 3 ph / 50 & 60 Hz * main supply voltage to frequency converter Frequency converter nomenclature CDS Dedicated compressor drive for VSH scroll Serie 302 Output power in kW H2 RFI class Enclosure protection IP...

Application Guidelines Compressor specifications Technical specifications Compressor model Swept volume (cm³/rev) Frequency converter specifications Supply frequency Programmable outputs Protection functions Over-current protection, over-modulation handling, low / high current handling Compressor functions Bearings lubrication Output voltage Discharge gas temperature protection, pressostat / thermostat function, short cycle protection, oil return management VSH compressors are equipped with an oil injection system that ensures the scroll set lubrication and controls the oil circulation...

Application Guidelines Technical specifications Capacity at EN12900 rating conditions To To: Evaporating temperature in °C Tc: Condensing temperature in °C Qo: Cooling capacity in W Superheat = 10 K Subcooling = 0 K Pe: Power input in kW Presented data are for models with motor voltage code G

Application Guidelines Technical specifications Capacity at ARI rating conditions To To: Evaporating temperature in °C Tc: Condensing temperature in °C Qo: Cooling capacity in W Superheat = 11.1 K Subcooling = 8.3 K Pe: Power input in kW Presented data are for models with motor voltage code G

Application Guidelines All dimensions in mm Grommet HM 8 bolt Lock washer Flat washer Steel mounting sleeve Rubber grommet

Application Guidelines Grommet HM 8 bolt Lock washer Flat washer Power supply Steel mounting sleeve Rubber grommet

Application Guidelines Lock washer Flat washer Steel mounting sleeve Rubber grommet

Application Guidelines Grommet HM 8 bolt Lock washer Flat washer Power supply Steel mounting sleeve Rubber grommet

Application Guidelines Grommet HM 8 bolt Lock washer Flat washer Steel mounting sleeve Rubber grommet Nut Compressor base plate

Application Guidelines Sight glass VSH compressors come equipped with a threaded oil sight glass with 1"1/8 – 18 UNEF connection. It can be used for visual check of oil The oil fill connection and gauge port is a 1/4" male flare connector incorporating a schrader valve. VSH compressors are equipped with rotolock oil equalisation connection. This connection is used when compressors are mounted in parallel. Contact Danfoss for further details. VSH170 are equipped with oil drain connection. This connection is a female ¼" SAE flare fitting, which allows oil to be removed for testing,...

Application Guidelines CDS302 frequency converter - enclosure B1 380-480 Volts - 15 kW - IP55 housing 525-600 volts - 15 kW - IP55 housing Mounting base

Application Guidelines CDS302 frequency converter - enclosure B2 380-480 volts – 18-22 kW - IP55 housing 525-600 volts – 18-22 kW - IP55 housing Mounting base

Application Guidelines CDS302 frequency converter - enclosure B3 380-480 volts - 15 kW - IP20 housing 525-600 volts - 15 kW - IP20 housing Scale 1:2 Min 200 Air space outlet Mounting base

Application Guidelines CDS302 frequency converter - enclosure B4 380-480 volts – 18-22 kW - IP20 housing 525-600 volts – 18-22 kW - IP20 housing 200-240 volts – 15 kW - IP20 housing Mounting base

Application Guidelines CDS302 frequency converter - enclosure C1 200-240 volts – 15-18-22 kW - IP55 housing scale 1:2 Min 200 Air space outlet Mounting base

Application Guidelines CDS302 frequency converter - enclosure C3 200-240 volts – 18-22 kW - IP20 housing

Application Guidelines Electrical data, connections and wiring Supply voltage Because VSH compressors are powered by a frequency converter, the mains frequency, 50 or 60 Hz, is no longer an issue. Only the mains voltage is to be taken into account. With 3 motor voltage codes, the most common mains voltages and frequencies are covered. Never connect the VSH compressor directly to the mains power supply. Compressor electrical specifications Voltage code Mains voltage range of drive RW: Winding resistance per winding (in CDS302 parameter list) RLA: Rated load current MMT: Maximum must trip...

Application Guidelines Electrical data, connections and wiring Wire sizes Below table lists recommended wiring sizes for the motor compressor power supply cables. These wiring sizes are valid for a cable length up to 20 m. It is not necessary to perform a Hipot test (dielectric withstand test) on frequency converters. This has already been done during factory final test. Ifa Hipot test has to be done anyway, following instructions must be followed in order to not damage the frequency converter: • LI, L2, L3, U, V, W terminals must be shorten and connected to high voltage terminal of •...