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  Trane Company (The)   Air Cooled Liquid Chillers  

Air Cooled Liquid Chillers - Page 25

   

Air Cooled Liquid Chillers

Electrical Data - 60 Hz 10-60 Tons

 

Table 26-1 — Electrical Data

 

Tons

 Model Number Unit Wiring Motor data
Nameplate Voltage Voltage range MCA Max fuse Size Rec. Dual Element Compressor (Ea) Fans (Ea)
Qty. RLA LRA Qty. KW FLA
10 CGA120B1 208-230/60/1 187-254 71.0 90   2 28.9 150 1 .95 6.0
CGA120B3 208-230/60/3 187-254 48.3 60   2 18.8 118 1 .95 6.0
CGA120B4 460/60/3 414-506 25.2 35   2 10.0 71 1 .95 2.7
CGA120BW 575/60/3 518-632 17.3 20   2 6.8 43 1 .95 2.0
15 CGA180B3 208-230/60/3 187-254 72.6 90   2 29.5 179 2 1.03 3.1
CGA180B4 460/60/3 414-506 33.6 40   2 13.5 90 2 1.03 1.6
CGA180BW 575/60/3 518-632 26.7 35   2 10.8 72 2 1.03 1.2
20   200/60/3 180-220 98 125 110 2 39.4 269 2 0.9 4.1
  230/60/3 208-254 98 125 110 2 39.4 251 2 0.9 4.1
CGAF-C20 460/60/3 416-508 44 60 50 2 17.2 117 2 0.9 1.8
  575/60/3 520-635 33 45 40 2 13.2 94 2 0.9 1.4
25   200/60/3 180-220 124 175 150 2 39.3,56.9 269,409 3 0.9 4.1
  230/60/3 208-254 124 175 150 2 39.3,56.9 251,376 3 0.9 4.1
CGAF-C25 460/60/3 416-508 56 80 70 2 17.1,25.4 117,178 3 0.9 1.8
  575/60/3 520-635 44 60 50 2 13.8,20.2 94,143 3 0.9 1.4
30   200/60/3 180-220 146 200 175 2 56.9 409 4 0.9 4.1
  230/60/3 208-254 146 200 175 2 56.9 376 4 0.9 4.1
CGAF-C30 460/60/3 416-508 65 80 80 2 25.1 178 4 0.9 1.8
  575/60/3 520-635 51 70 60 2 19.9 143 4 0.9 1.4
40   200/60/3 180-220 187 225 200 4 39.4 269 4 0.9 4.1
  230/60/3 208-254 186 225 200 4 39.4 251 4 0.9 4.1
CGAF-C40 460/60/3 416-508 82 90 90 4 17.2 117 4 0.9 1.8
  575/60/3 520-635 62 70 70 4 13.2 94 4 0.9 1.4
50   200/60/3 180-220 224 250 250 4 35.5,55.5 269,409 6 0.9 4.1
  230/60/3 208-254 223 250 250 4 35.5,55.5 251,376 6 0.9 4.1
CGAF-C50 460/60/3 416-508 98 110 110 4 15.5,24.2 117,178 6 0.9 1.8
  575/60/3 520-635 77 90 90 4 12.4,19.4 94,143 6 0.9 1.4
60   200/60/3 180-220 270 300 300 4 56.9 409 6 0.9 4.1
  230/60/3 208-254 269 300 300 4 56.9 376 6 0.9 4.1
CGAF-C60 460/60/3 416-508 120 125 125 4 25.4 178 6 0.9 1.8
  575/60/3 520-635 95 110 100 4 20.2 143 6 0.9 1.4

Notes:

1. MCA: Minimum Circuit Ampacity is 125% of the largest compressor RLA plus 100% of the other compressor(s) RLA plus the sum of the condenser fan FLA plus any other load rated at 1 AMP or more

2. Maximum Fuse Size: 225% of the largest compressor RLA plus 100% of the other compressor(s) RLA plus the sum of the condenser fan FLA plus any other load rated at 1 AMP or more

3. Recommended Dual Element Fuse Size: 150% of the largest compressor RLA plus 100% of the other compressor(s) RLA plus the sum of the condenser fan FLA plus any other load rated at 1 AMP or more.

4. RLA: Rated in accordance with UL standard 1995.

5. Local codes may take precedence.

6. All units are across the line starting. Compressors will never start simultaneously.

7. One 115/60/1, 15 AMP jobsite provided power connection is required to operate the evaporator heat tape.

Load Definitions

LOAD1 = Current of the largest motor — compressor or fan motor

LOAD2 = Sum of the currents of all remaining motors

LOAD3 = Current of electric heaters

LOAD4 = Any other load rated at 1 amp or more

MCA = (1.25 x LOAD1) + LOAD2 + LOAD4

MOP = (2.25 x LOAD1) + LOAD2 + LOAD4

Select a fuse rating equal to the MOP value. If the MOP value does not equal a standard fuse size as listed in NEC 240-6, select the next lower standard fuse rating.

NOTE: If selected MOP is less than the MCA, then reselect the lowest standard maximum fuse size which is equal to or larger than the MCA, provided the reselected fuse size does not exceed 800 amps.

RDE =(1.5 x LOAD1) + LOAD2 + LOAD4

Select a fuse rating equal to the RDE value. If the RDE value does not equal a standard fuse size as listed in NEC 240-6, select the next higher standard fuse rating.

NOTE: If the selected RDE is greater than the selected MOP value, then reselect the RDE value to equal the MOP value.

DSS =1.5 x (LOAD1 + LOAD2 + LOAD3 + LOAD4)

Select a disconnect switch size equal to or larger than the DSS value calculated.



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