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CS.3 Microsite Semi-Hermetic Screw Compressors Semi-Hermetic Compact Screws Hermetic Compact-Screws Open Drive Screw Compressors Oil coolers for Screw Compressors Oil Separators

ORBIT 8 Microsite Compressors of the ORBIT 8 Series Compressors of the ES Series Compressors of the EL Series ECH - Semi-hermetic scroll comperssors

Condensers Liquid Receivers Oil Coolers for Screw Compressors Oil Separators for Screw Compressors

General Reciprocating Compressors Screw Compressors Scroll Compressors Pressure Vessels CAD Drawings LODAM electronics a/s

BITZER Software Spare parts software (EPARTS) DVD Ordering BITZER Screensaver BITZER App

Screw compressors

Technical Information:
ST-120 ST-121 ST-130 ST-410 ST-500 ST-620

Technical Data

	SI	IP
Motor version	1	1
Displacement (2900 RPM 50 Hz)	535 m³/h	18893 CFH
Displacement (3500 RPM 60 Hz)	646 m³/h	22602 CFH
Motor voltage (more on request)	380..415V Δ/3/50Hz	440..480V Δ/3/60Hz
Max operating current	310A	310A
Winding ratio	50% / 50%	50% / 50%
Starting current (Rotor locked)	602A / 1181A (Δ/ΔΔ)	602A / 1181A (Δ/ΔΔ)
Enclosure class	IP54	IP54
Weight	870 kg	1918 lb
Max. pressure (LP/HP)	19 / 28 bar	275 / 400 psi
Connection suction line	DN 100	4 1/8"
Connection discharge line	76 mm	3 1/8"
Oil charge	19.0 dm³	668.7 fl oz
Oil heater⁽¹⁾	300 W	300 W
Oil type R134a	BSE170	BSE170
Oil separator
Oil filter
Opto-electronical oil level switch	OLC-D1-S	OLC-D1-S
Control valve for external oil cooler
Discharge gas temperature sensor
Capacity Control - infinite	100% – 25%	100% – 25%
Capacity Control - 4-step	100% / 75% / 50% / 25%	100% / 75% / 50% / 25%
Start unloading
Motor protection	SE-E1 SE-E2; SE-C1	SE-E1 SE-E2; SE-C1
Bridges for DOL start
Built-in check valve
Discharge shut-off valve
Suction shut-off valve
Shut-off valve for ECO with muffler
Shut-off valve for LI
Vibration dampers
Standard Option (1) 230V/1/50Hz+60Hz
// Subject to change //

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