1FT6 Synchronous Motors
Configuration Manual, (PFT6), 10.2005 Edition, 6SN1197-0AD02-0BP1
1-25
Motor Description
Cooling
Materials used in the cooling circuits
The anti-corrosion additives used should be harmonized with the cooling system manufac-
turer - i.e. the materials of the motor cooler and the materials of the fittings and cooling
medium hoses listed in Table.
Cooling medium and anti-corrosion protection
We recommend that an anti-corrosion agent is added to water as cooling-medium (e.g. Anti-
frogen N from the Hoechst Company or Tyfocor from Tyforop Chemie GmbH, refer to the
Table below).
Observe the specifications of the anti-corrosion agent manufacturer regarding the ratio of
water to anti-corrosion agent.
For Tyfocor, the ratio of 75 % water and 25 % anti-corrosion agent should not be exceeded.
When using another cooling medium (e.g. oil, cooling-lubricating medium), de-rating may be
required in order that the thermal motor limit is not exceeded. The de-rating can be deter-
mined using the following data:
The enquiry must be sent to the manufacturer's plant (Hotline).
The motor power still does not have to be reduced for oil-water mixtures with less than 10 %.
Table 1-9 Materials used in the motor cooling circuit
Motor type
Bearing end
shield
Enclosure Sealing agent Connecting plate
1FT606
1FT608
1FT610
Aluminum Aluminum Type Terostat Stainless steel
1FT613
1FT616
Gray cast iron Aluminum Type Terostat –––
Notice
It is not permissible that ice forms in the cooling circuit, neither during transport, nor in opera-
tion or during storage.
The checking and change intervals for the cooling medium should be harmonized with the
companies supplying the anti-corrosion agent and the cooling system.
Specific density:
ρ [kg/m
3
]
Specific thermal capacitance: c
p
[J/(kg K)]
Intake temperature: t
v
[°C]
Flow quantity: v [l/min]
Note
Different anti-corrosion agents should not be mixed.
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