Danfoss TGH Series, Applications And Installation Manual

Page: 106 / 114

106 of 114
M-AP-001-EN Rev. Q
Figure 20-9 Typical Electrical Connections
1. Remove the fasteners that secure the cover and set the cover aside.
2. Insert a cable gland (customer-supplied) into the opening in the mains input bracket.
3. Fasten the cable gland to the bracket with the locknut
4. Feed the AC input cable through the cable gland.
5. Attach the ground cable to the ground post on the compressor housing.
6. Attach and secure the upper nut and jam nut to the ground post (refer to "Figure 20-10 Ground
Post Nuts").
7. Attach the three (3) main power cables to the compressor terminals (refer to "Figure 20-
11 Compressor AC Input Terminals" on page 107). Continue to Step 8 for TT300/TG230
compressors. For all other TTS/TGS compressors, continue to Step 9.
Figure 20-10 Ground Post Nuts
8. The three (3) compression lugs on the TTS300/TGS230 compressors need to be torqued to
20 Nm (15 ft-lbs).
Upper Nut - 10
Nm
(7 ft.lb.)
Jam Nut - 7 Nm
(62 in.lb.)
Harmonic Filter
(optional)
Surge Suppressor
(optional)
EMI/EMC
Filter
(optional)
Line
Reactor
AC Input
Voltage
L1
L2
L3
C
GND
Manual Disconnect
(see notes)
Circuit Protection (**)
Notes
(*) Class T 600 VAC fast-acting fuses must be installed for all models
except for TGS230 and TTS300 compressors.
(**) Circuit protection is required - refer to local electrical requirements.
Connect power wiring ground and ground of
secondary transformer, including 24 control power
to common ground point in electrical panel.
Fuse (User-supplied)
Fast-acting fuses (*)