Electrical data, connections and wiring
Danfoss scroll compressors H Series are available in four different motor voltages as listed below.
Motor voltage
Danfoss Scroll Compressors H-series will only
compress gas while rotating counter-clockwise
(when viewed from the compressor top). Since
single-phase motors will start and run in only
one direction, reverse rotation is not a major
consideration. Three-phase motors, however,
will start and run in either direction, depending
on the phase angles of the supplied power. Care
must be taken during installation to ensure that
the compressor operates in the correct direction
(see “Phase sequence and reverse rotation
protection”).
The drawings below show electrical terminal
labelling and should be used as a reference
when wiring the compressor. For three phase
applications, the terminals are labelled T1,
T2, and T3. For single-phase applications the
terminals are labelled C (common), S (start), and
R (run).
The maximum allowable voltage imbalance is
2%. Voltage imbalance causes high amperage
over one or several phases, which in turn leads
to overheating and possible motor damage.
Voltage imbalance is given by the formula:
The terminal cover and gasket should be
installed prior to operation of the compressor.
The terminal cover has two outside tabs, 180
degrees apart, that engage the terminal fence.
When installing the cover, check that it is not
pinching the lead wires. Both the inside of the
terminal cover and the gasket have labels for the
terminal pins: C (common), R (run), and S (start).
Wiring connections
Terminal cover mounting
Terminal cover removal
Ring connect screw terminals
C terminal box type
C
T₁
S
T₂
R
T₃
Quick connect spade terminals
P terminal box type
push
push
push
Motor voltage code
Code 1
Code 2
Code 4
Code 5
Code 7
Code 9
Nominal voltage
50 Hz
-
200-220 V - 3 ph
380-415V - 3 ph
220-240 V -1 ph
500 V - 3 ph
-
Voltage range
50 Hz
-
180 - 242 V
342 - 457 V
198 - 264 V
450 - 550 V
-
Nominal voltage
60 Hz
208-230 V - 1ph
208-230 V - 3 ph
460 V - 3 ph
-
575 V - 3 ph
380 V - 3 ph
Voltage range
60 Hz
187 - 253 V
187 - 253 V*
414 - 506 V
-
517 - 632 V
342 - 418 V
|V
avg
- V
1-2
|+|V
avg
- V
1-3
|+|V
avg
- V
2-3
|
2 xV
avg
Vavg = Mean voltage of phases 1, 2 and 3
V1-2 = Voltage between phases 1 and 2
V1-3 = Voltage between phases 1 and 3
V2-3 = Voltage between phases 2 and 3.
% voltage unbalance:
x 100
19
FRCC.PC.012.A7.02
GENER
AL INFORM
ATION
SY
STEM DESIGN
INTEGR
ATION INT
O SY
STEM
ORDERING INFORM
ATION
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ODUC
T INFORM
ATION