bitzer information – varispeed reciprocating compressors germany, 23th of november 2010
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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
BITZER Information Page 5
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)
BITZER Information Page 6
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
BITZER Information Page 7
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
BITZER Information Page 8
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
BITZER Information Page 9
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)
BITZER Information Page 10
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
BITZER Information Page 11
/ 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
BITZER Information Page 12
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 !
BITZER Information Page 13
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
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