Sumitomo SRDK Series - Safety Devices

TECHNICAL INSTRUCTION Sumitomo Heavy Industries, Ltd.
CSW-71C 14
1-3 ELECTRICAL DESCRIPTION
1-3-2 SAFETY DEVICES
The safety devices list for Compressor Unit is shown in Table.1.6.
Table 1.6 SAFETY DEVICES OF CSW-71C
ITEM FUNCTIONS
THERMOSTAT : (TS1)
Setting temperature; 110 deg.C ---- approx.
To shut down the Compressor Unit and signal a high temperature alarm to the
External Connector, in case of higher temperature of a compressed He-
gas at a
compressor outlet than the setting temperature.
THERMOSTAT : (TS2)
Setting temperature; 60 deg.C ---- approx.
To shut down the Compressor Unit and signal a high temperature alarm to the
External Connector, in case of higher temperature of a compressed He-
gas at a
He-gas cooler outlet than the setting temperature.
THERMOSTAT : (TS3)
Setting temperature; 60 deg.C ---- approx.
To shut down the Compressor Unit and signal a higher temperature alarm to the
External Connector, in case of higher temperature of a water at
a cooling water
outlet than the setting temperature.
SOLENOID VALVE : (YV)
To stabilize a pressure for even of the He-
gas between the Supply and Return
piping, at a shut off the Compressor Unit.
HIGH PRESSURE SWITCH :
(PSH)
Setting pressure;
“Operate” 2.55 MPa ---- approx.
“Reset” 2.26 MPa ---- approx.
To adjust a Supply He-
gas pressure smoothly by a function of the pressure
switch for Open and/or Shut, in case of higher pressure of the Supply He-
gas
than the setting pressure.
LOW PRESSURE SWITCH :
(PSL)
Setting Pressure;
“Operate” 0.15 MPa ---- approx.
To shut down the Compressor Unit and signal a Low pressure alarm to the
External Connector, in case of lower pressure of a compressed He-
gas caused
by a smaller quantity of He-gas than original filling in the compressor unit.
RELIEF VALVE
Setting pressure;
“Operate” 2.61 - 2.75 MPa
“Reset” 2.50 MPa ---- minimum
To adjust a Supply He-
gas pressure smoothly by a function of the Relief Valve
for blowing off the He-gas to the atmosphere, in case of
higher pressure of
Supply He-gas than the setting pressure.
MAIN POWER SWITCH :
(QF1)
Setting current; 29 A
To shut down the Compressor Unit, in case of occurring over-
current and/or
short-circuit than the setting current.
PHASE FAILURE
PROTECTION CIRCUIT :
To avoid starting-
up of the Compressor Unit in case of an abnormal operation
caused by irregular connecting of Input Power Cable such as failure connecting.
FUSE :
(FU1, FU2, FU3)
To protect the Compressor Unit from the over-load caused by short-cir
cuit and/or
any other electrical failure in the DC power or the Solenoid Valve.