CG-SVX17D-EN
143
Pre-Start Checkout
Unit Voltage Power Supply
WARNING
Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it may be necessary
to work with live electrical components. Have a qualified licensed electrician or other individual
who has been properly trained in handling live electrical components perform these tasks.
Failure to follow all electrical safety precautions when exposed to live electrical components
could result in death or serious injury.
Voltage to the unit must meet the criteria given. Measure each leg of the supply voltage at the unit's
main power fused-disconnect. If the measured voltage on any leg is not within specified range,
notify the supplier of the power and correct the situation before operating the unit.
NOTICE:
Equipment Damage!
Inadequate voltage to the unit may cause control components to malfunction and shorten the
life of relay contact, compressor motors and contactors.
Unit Voltage Imbalance
Excessive voltage imbalance between the phases of a three-phase system can cause motors to
overheat and eventually fail. The maximum allowable imbalance is 2 percent. Voltage imbalance
is determined using the following calculations:
= phase with greatest difference from V
ave
(without regard to sign)
For example, if the three measured voltages are 221, 230, and 227 volts, the average would be:
The percentage of imbalance is then:
This exceeds the maximum allowable (2%) by 0.2 percent.
Unit Voltage Phasing
It is important that proper rotation of the compressors be established before the unit is started.
Proper motor rotation requires confirmation of the electrical phase sequence of the power supply.
The motor is internally connected for clockwise rotation with the incoming power supply phased
A, B, C.
Basically, voltages generated in each phase of a polyphase alternator or circuit are called phase
voltages. In a three-phase circuit, three sine wave voltages are generated, differing in phase by 120
electrical degrees. The order in which the three voltages of a three-phase system succeed one
another is called phase sequence or phase rotation. This is determined by the direction of rotation
of the alternator. When rotation is clockwise, phase sequence is usually called “ABC”, when
counterclockwise, “CBA”.
1Vx
Содержание CGAM
Страница 44: ...44 CG SVX17D EN Installation Mechanical Figure 39 CGAM W 80 120 Ton Rigging X Z Y ...
Страница 101: ...CG SVX17D EN 101 CGAM Operating Principles Figure 76 Pressure Enthalpy Curve Pressure Enthalpy Liquid Gas 1 2 3 4 5 ...
Страница 104: ...104 CG SVX17D EN CGAM Operating Principles Figure 79 10 15 Ton Compressor Internal Components ...
Страница 105: ...CG SVX17D EN 105 CGAM Operating Principles Figure 80 15 30 Ton Compressor Internal Components ...
Страница 135: ...CG SVX17D EN 135 Controls Interface Figure 87 Diagnostic View ...
Страница 149: ...CG SVX17D EN 149 Unit Start Up Procedures Figure 95 Power Up to Starting ...
Страница 185: ...CG SVX17D EN 185 Unit Wiring S2075 1 20 35 Ton Slant Frame Table of Contents ...
Страница 186: ...186 CG SVX17D EN Unit Wiring S2075 2 20 35 Ton Slant Frame Legend ...
Страница 187: ...CG SVX17D EN 187 Unit Wiring 20 35 Ton Slant Frame Legend ...
Страница 188: ...188 CG SVX17D EN Unit Wiring S2075 3 20 35 Ton Slant Frame Notes ...
Страница 189: ...CG SVX17D EN 189 Unit Wiring 20 35 Ton Slant Frame Notes ...
Страница 190: ...190 CG SVX17D EN Unit Wiring S2075 4 20 35 Ton Slant Frame Compressor Power Circuit 1 ...
Страница 191: ...CG SVX17D EN 191 Unit Wiring 20 35 Ton Slant Frame Compressor Power Circuit 1 ...
Страница 192: ...192 CG SVX17D EN Unit Wiring S2075 6 20 35 Ton Slant Frame Fan Power Circuit 1 ...
Страница 193: ...CG SVX17D EN 193 Unit Wiring 20 35 Ton Slant Frame Fan Power Circuit 1 ...
Страница 194: ...194 CG SVX17D EN Unit Wiring S2075 8 20 35 Ton Slant Frame Pump Power Control ...
Страница 195: ...CG SVX17D EN 195 Unit Wiring 20 35 Ton Slant Frame Pump Power Control ...
Страница 196: ...196 CG SVX17D EN Unit Wiring S2075 9 20 35 Ton Slant Frame Compressor Control ...
Страница 197: ...CG SVX17D EN 197 Unit Wiring 20 35 Ton Slant Frame Compressor Control ...
Страница 198: ...198 CG SVX17D EN Unit Wiring S2075 10 20 35 Ton Slant Frame Fan Control 2 3 Fan Units ...
Страница 199: ...CG SVX17D EN 199 Unit Wiring 20 35 Ton Slant Frame Fan Control 2 3 Fan Units ...
Страница 200: ...200 CG SVX17D EN Unit Wiring S2075 12 20 35 Ton Slant Frame Common Control ...
Страница 201: ...CG SVX17D EN 201 Unit Wiring 20 35 Ton Slant Frame Common Control ...
Страница 202: ...202 CG SVX17D EN Unit Wiring S2075 13 20 35 Ton Slant Frame Common Control ...
Страница 203: ...CG SVX17D EN 203 Unit Wiring 20 35 Ton Slant Frame Common Control ...
Страница 204: ...204 CG SVX17D EN Unit Wiring S2075 14 20 35 Ton Slant Frame Freeze Protection ...
Страница 205: ...CG SVX17D EN 205 Unit Wiring 20 35 Ton Slant Frame Freeze Protection ...
Страница 206: ...206 CG SVX17D EN Unit Wiring V2075 1 40 70 Ton V Frame Table of Contents ...
Страница 207: ...CG SVX17D EN 207 Unit Wiring 40 70 Ton V Frame Table of Contents ...
Страница 208: ...208 CG SVX17D EN Unit Wiring V2075 2 40 70 Ton V Frame Legend ...
Страница 209: ...CG SVX17D EN 209 Unit Wiring 40 70 Ton V Frame Legend ...
Страница 210: ...210 CG SVX17D EN Unit Wiring V2075 3 40 70 Ton V Frame Notes ...
Страница 211: ...CG SVX17D EN 211 Unit Wiring 40 70 Ton V Frame Notes ...
Страница 212: ...212 CG SVX17D EN Unit Wiring V2075 4 40 70 Ton V Frame Compressor Power Circuit 1 ...
Страница 213: ...CG SVX17D EN 213 Unit Wiring 40 70 Ton V Frame Compressor Power Circuit 1 ...
Страница 214: ...214 CG SVX17D EN Unit Wiring V2075 5 40 70 Ton V Frame Compressor Power Circuit 2 ...
Страница 215: ...CG SVX17D EN 215 Unit Wiring 40 70 Ton V Frame Compressor Power Circuit 2 ...
Страница 216: ...216 CG SVX17D EN Unit Wiring V2075 6 40 70 Ton V Frame Fan Power Circuit 1 ...
Страница 217: ...CG SVX17D EN 217 Unit Wiring 40 70 Ton V Frame Fan Power Circuit 1 ...
Страница 218: ...218 CG SVX17D EN Unit Wiring V2075 7 40 70 Ton V Frame Fan Power Circuit 2 ...
Страница 219: ...CG SVX17D EN 219 Unit Wiring 40 70 Ton V Frame Fan Power Circuit 2 ...
Страница 220: ...220 CG SVX17D EN Unit Wiring V2075 8 40 70 Ton V Frame Pump Power Control ...
Страница 221: ...CG SVX17D EN 221 Unit Wiring 40 70 Ton V Frame Pump Power Control ...
Страница 222: ...222 CG SVX17D EN Unit Wiring V2075 9 40 70 Ton V Frame Compressor Control ...
Страница 223: ...CG SVX17D EN 223 Unit Wiring 40 70 Ton V Frame Compressor Control ...
Страница 224: ...224 CG SVX17D EN Unit Wiring V2075 10 40 70 Ton V Frame Fan Control 2 3 Fan Units ...
Страница 225: ...CG SVX17D EN 225 Unit Wiring 40 70 Ton V Frame Fan Control 2 3 Fan Units ...
Страница 226: ...226 CG SVX17D EN Unit Wiring V2075 12 40 70 Ton V Frame Common Control ...
Страница 227: ...CG SVX17D EN 227 Unit Wiring 40 70 Ton V Frame Common Control ...
Страница 228: ...228 CG SVX17D EN Unit Wiring V2075 13 40 70 Ton V Frame Common Control ...
Страница 229: ...CG SVX17D EN 229 Unit Wiring 40 70 Ton V Frame Common Control ...
Страница 230: ...230 CG SVX17D EN Unit Wiring V2075 14 40 70 Ton V Frame Freeze Protection ...
Страница 231: ...CG SVX17D EN 231 Unit Wiring 40 70 Ton V Frame Freeze Protection ...
Страница 232: ...232 CG SVX17D EN Unit Wiring W2075 1 80 130 Ton W Frame Table of Contents ...
Страница 233: ...CG SVX17D EN 233 Unit Wiring 80 130 Ton W Frame Table of Contents ...
Страница 234: ...234 CG SVX17D EN Unit Wiring W2075 2 80 130 Ton W Frame Legend ...
Страница 235: ...CG SVX17D EN 235 Unit Wiring 80 130 Ton W Frame Legend ...
Страница 236: ...236 CG SVX17D EN Unit Wiring W2075 3 80 130 Ton W Frame Notes ...
Страница 237: ...CG SVX17D EN 237 Unit Wiring 80 130 Ton W Frame Notes ...
Страница 238: ...238 CG SVX17D EN Unit Wiring W2075 4 80 130 Ton W Frame Compressor Power Circuit 1 ...
Страница 239: ...CG SVX17D EN 239 Unit Wiring 80 130 Ton W Frame Compressor Power Circuit 1 ...
Страница 240: ...240 CG SVX17D EN Unit Wiring W2075 5 80 130 Ton W Frame Compressor Power Circuit 2 ...
Страница 241: ...CG SVX17D EN 241 Unit Wiring 80 130 Ton W Frame Compressor Power Circuit 2 ...
Страница 242: ...242 CG SVX17D EN Unit Wiring W2075 6 80 130 Ton W Frame Fan Power Circuit 1 ...
Страница 243: ...CG SVX17D EN 243 Unit Wiring 80 130 Ton W Frame Fan Power Circuit 1 ...
Страница 244: ...244 CG SVX17D EN Unit Wiring W2075 7 80 130 Ton W Frame Fan Power Circuit 2 ...
Страница 245: ...CG SVX17D EN 245 Unit Wiring 80 130 Ton W Frame Fan Power Circuit 2 ...
Страница 246: ...246 CG SVX17D EN Unit Wiring W2075 8 80 130 Ton W Frame Pump Power Control ...
Страница 247: ...CG SVX17D EN 247 Unit Wiring 80 130 Ton W Frame Pump Power Control ...
Страница 248: ...248 CG SVX17D EN Unit Wiring W2075 9 80 130 Ton W Frame Compressor Control ...
Страница 249: ...CG SVX17D EN 249 Unit Wiring 80 130 Ton W Frame Compressor Control ...
Страница 250: ...250 CG SVX17D EN Unit Wiring W2075 10 80 130 Ton W Frame Fan Control 2 3 Fan Units ...
Страница 251: ...CG SVX17D EN 251 Unit Wiring 80 130 Ton W Frame Fan Control 2 3 Fan Units ...
Страница 252: ...252 CG SVX17D EN Unit Wiring W2075 11 80 130 Ton W Frame Fan Control 4 5 Fan Units ...
Страница 253: ...CG SVX17D EN 253 Unit Wiring 80 130 Ton W Frame Fan Control 4 5 Fan Units ...
Страница 254: ...254 CG SVX17D EN Unit Wiring W2075 12 80 130 Ton W Frame Common Control ...
Страница 255: ...CG SVX17D EN 255 Unit Wiring 80 130 Ton W Frame Common Control ...
Страница 256: ...256 CG SVX17D EN Unit Wiring W2075 13 80 130 Ton W Frame Common Control ...
Страница 257: ...CG SVX17D EN 257 Unit Wiring 80 130 Ton W Frame Freeze Protection ...
Страница 258: ...258 CG SVX17D EN Unit Wiring W2075 14 80 130 Ton W Frame Freeze Protection ...
Страница 259: ...CG SVX17D EN 259 Unit Wiring 80 130 Ton W Frame Common Control ...
Страница 260: ...260 CG SVX17D EN Unit Wiring 2076 1 Field Wiring Diagram ...
Страница 261: ...CG SVX17D EN 261 Unit Wiring C TRANE Field Wiring Diagram ...
Страница 262: ...262 CG SVX17D EN Unit Wiring 2076 2 FUSE Field Wiring Diagram Notes ...