47
Table 10.13b Electrical data of single motor (220V 50Hz), R449A
APPLICATION
MODEL
Rated
load
amps
RLA (A)
Locked
rotor
amps
LRA (A)
Max
operating
current
MOC (A)
Run Winding
Resistance
(±10%) at 25°C
(Ω)
Start Winding
Resistance
(±10%) at 25°C
(Ω)
MBP
SE6015GK-C
8,4
76
16,2
0,7
1,4
SE6018GK-C
9,8
76
17,2
0,7
1,4
SE6021GK-C
10,9
76
19
0,7
1,4
SE6026GK-C
13,3
109
25,7
0,5
1,3
SE6030GK-C
14,6
109
28,1
0,5
1,3
LBP
SE2006GK-C
5,1
76
13,4
0,7
1,4
SE2008GK-C
6,6
76
14,2
0,7
1,4
SE2010GK-C
7,7
76
16,2
0,7
1,4
SE2012GK-C
9,9
109
21,3
0,5
1,3
SE2014GK-C
10,5
109
23,3
0,5
1,3
10.14 DEFINITIONS
Maximum operating current (MOC) is the maximum current value which compressor can operate steadily.
Locked Rotor Amperage (LRA) is the total current input ones compressor motor is locked at its maximum
rated voltage.
Rated Load Amperage (RLA) is the value established from MCC (Maximum continuous current) and
means that if that value is up to certain limit, the protector must trip.
The scroll compressor needs a
Run-in period minimum 72 hours to give its full performances, usually
under low load or normal load, to settle mechanical parts into a stable position. During this run-in the
power input can be slightly higher than normal conditions.
10.15 HIGH POTENTIAL (HI-POT) TESTING
Scroll compressors are configured with the motor below the compressor. As a result when liquid
refrigerant is within the compressor shell the motor can be immersed in liquid refrigerant to a greater
extent than with compressors with the motor mounted above the compressor. When compressors are
Hi-pot tested and liquid refrigerant is in the shell, they can show higher levels of leakage current than
compressors with the motor on top because of the higher electrical conductivity of liquid refrigerant
than refrigerant vapor and oil. This phenomenon can occur with any compressor when the motor is
immersed in refrigerant. The level of current leakage does not present any safety issue. To lower the
current leakage reading the system should be operated for a brief period of time to redistribute the
refrigerant to a more normal configuration and the system Hi-pot tested again. Under no circumstances
should the Hi-pot or Meg-ohm test be performed while the compressor is under a vacuum.
