Temperature Protection And Safety Valve Settings; Reference Conditions And Limitations - Atlas Copco SF 1 Instruction Book

Instruction book
Frequency
50 Hz
50 Hz
50 Hz
50 Hz
60 Hz
UL/CUL
60 Hz
60 Hz
60 Hz
60 Hz
60 Hz
*
: Maximum fuses according HRCII-C, according Class K5 for units without refrigerant dryer and
according Class K5 for units with refrigerant dryer respectively.
8.4

Temperature protection and safety valve settings

Temperature shut-down switch settings (TSHH)
Compressor element outlet temperature
SF 1 (8 bar / 116 psi)
SF 1 (10 bar / 145 psi)
SF 2 (8 bar and 10 bar / 116 and 145 psi)
SF 4 (8 bar and 10 bar / 116 and 145 psi)
SF 6 (8 bar and 10 bar / 116 and 145 psi)
Safety valve (SV)
Pressure version
8 bar compressors
116 psi compressors
10 bar compressors
145 psi compressors
8.5

Reference conditions and limitations

Reference conditions
Air inlet pressure (absolute)
2920 7110 11
SF 4
Voltage Overload relay
200 V 3~ 17.3 A
230 V 3~ 15.0 A
400 V 3~ 8.7 A
400 V + N 3~ 8.7 A
380 V 3~ 8.7 A
200 V 3~ 16.6 A
208 V --
230 V 3~ 15.2 A
460 V 3~ 7.6 A
575 V 3~ 5.9 A
SF 4 SF 6
Maximum fuse Overload relay
50A 25.7A
40 A 22.3 A
16 A 12.8 A
16 A 12.8 A
16 A 12.8 A
* 25.2 A
25/25/30 A
-- 24.3 A
24.0 A
*
25/25/30 A
* 12.0 A
10/10/15 A
8.8 A
*
10/10/10 A
Set pressure
8.8
135
11
160
bar 1
SF 6
Maximum fuse
50 A
40 A
25 A
25 A
25 A
*
40/40/45 A
*
40/40/45 A
*
40/40/45 A
*
20/20/20 A
*
15/15/15 A
Opens at
70 °C (158 °F)
80° C (176 °F)
70 °C (158 °F)
70 °C (158 °F)
195 °C (383 °F)
Unit
bar(e)
psi(g)
bar(e)
psi(g)
43