BITZER information –VARISPEED Reciprocating Compressors

Germany, 23th of November 2010

Topic

• VARISPEED Enlargement product range Features Availiability

BITZER Information Page 3

OCTAGON VARISPEED

Example for a conventional system:Four compressors in On/Off operation without inverter

Get operation cost savings

with inverter; to= constant

BITZER Information Page 4

OCTAGON VARISPEED

F1..F4 inverters have:

/ Same wiring logic: Run signal, alarm relay ...

/ Same control signals: 4..20mA or 0..10V

Inverter designation

F1

F3

F4

F1 Inverterhousing

F3 + F4Inverterhousing

HigherInverterOutput current

Existing Model

New Model

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OCTAGON VARISPEED

R404A R404A R134a R134a

R404A : Bigger inverter (F4) + Standard Comp. (Motor 1) -> 4NCS-20.F4Y

R134a: Smaller inverter (F3) + ECOLINE Comp. (Motor 2) -> 4NES-12.F3Y

C4 Compressors (4V-4N)

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OCTAGON VARISPEED

VARISPEED Max. CoolingCapacity*

4DC-7.F1Y 13,2 kW

4CC-6.F1Y 15,9 kW

4VES-6.F3Y 16,4 kW

4TES-8.F3Y 19,6 kW

4PES-10.F3Y 23,0 kW

4NES-12.F3Y 26,6 kW

* 87Hz ; SST=-10°C; SDT=+45°C; 20°C suction gas temp. ; without liquid subcooling

Product range enlargement (red):

VARISPEED Max. CoolingCapacity*

2DC-3.F1Y 10,8 kW

4FC-5.F1Y 14,6 kW

4EC-6.F1Y 18,4 kW

4DC-7.F3Y 21,9 kW

4CC-9.F3Y 26,7 kW

4VCS-10.F4Y 28,3 kW

4TCS-12.F4Y 34,3 kW

4PCS-15.F4Y 41,2 kW

4NCS-20.F4Y 47,6 kW

R404A, R507A , R407C, R22 R404A, R507A , R407C, R22 R134a R134a

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VARISPEED CO2

VARISPEEDCO2

Max. CoolingCapacity*

4MTC-10.F4K 22,3 kW

4KTC-10.F4K 33,3 kW

* 87Hz; to=-10°C; tGC=+35°C; pHP=90bar; toh=10K

Product launch:OCTAGON VARISPEED CO2 transcritical application

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OCTAGON VARISPEED

New VARISPEED Series VARISPEED Series 23,7 up to 99,2 m3/h*

● Enlargement VARISPEED R404A product range● New ECOLINE VARISPEED R134a series● New VARISPEED CO2 Series

Winning Features

● Optimized motor-inverter combinationdelivery ex works enablesSimple installation and commissioning

● Maintenance free due to suction gas-cooling ● Wide speed range 25…87Hz

* Basis: 87 Hz

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OCTAGON VARISPEED

/ Increases cooling capacity by 70% with same compressor dimensions

Optimized motor inverter combinationOptimized motor inverter combination

VARISPEED Motor: 230V D-connection (40S)/ Enable full motor torque also between 50 .. 87Hz

/ Motor operates in the complete frequency range within the optimum voltage/frequency ratio - No motor efficiency drop with trans-synchronous mode

/ 40S Motor allows operation without inverter (Y-connection, 400V-3-50Hz supply)

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OCTAGON VARISPEED

/ Outstanding operating safety

- Steady inverter cooling even at high ambient temperatures - Full output current even at high ambient temperatures (no derating) - No malfunction of inverter fan possible

/ Maintenance-free inverter

- No air cooled heat sink used therefore no drawback by dirt on heat exchanger surface

Winning feature: Suction gas-coolingWinning feature: Suction gas-cooling

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/ Reduced output current capability at higher ambient temperatures

/ Reduced life-time of power parts at high ambient temperatures

Competitors with air-cooled inverter

OCTAGON VARISPEED

Derating effect

40% less inverter current !- Significant drop of motor torque- Blocked motor situations at peak load

40% less inverter current !- Significant drop of motor torque- Blocked motor situations at peak load

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OCTAGON VARISPEED

/ Rock-solid full aluminum inverter housing

/ Pre-assembled shielded connection cable between inverter and compressor -Short cable leads to reduced distortion

/ New: All VARISPEED compressors with aluminum terminal box as standard

Winning feature: Improved EMC behaviorWinning feature: Improved EMC behavior

No additional EMC measures required !

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OCTAGON VARISPEED

Prospective Availability

/ Ready for field test deliveries

R134a: 4NES-12F3Y or 4PES-10.F3Y NOW

R404A: 4DC-7.F3Y NOW

C4 VARISPEED Q1/2011

CO2 : C3 VARISPEED Q1/2011

Documentation

/ New brochures: KP-102-2 VARISPEE D R404A+R134a

KP-132-1 VARISPEED CO2