Dual-Compressor Module

Installation

2.6.4Electrical Requirements

Figure 11 Typical Compressor Module Electrical Requirements

 

1

1

1

 

 

Optionallifmorethanone

 

 

compressorComoduleModuleused

 

4

 

2

5

5

 

 

 

 

 

3

Power

24VDC

24V Discrete Inputs

to Compressors

Cooling

from Scroll Module

 

(2)

Fan

 

 

Code

Description

1Control Techniques VFD,* 30 HP

224VDC power supply **

3PLC or other control for inputs from Compressor Module

4480V 3-phase input ***

5Overload protection device, 2 required

Notes

*VFD on Variable Speed Drive models.

**All other components supplied by Packagers.

***Contact factory for information about single-phase applications.

Table 2

Typical Compressor Module power supply requirements

 

Compressor Power (data based on 480VAC)

Variable Speed

Module horsepower

30 HP

VFD voltage supply range

342-528VAC

Phase

 

3-phase*

Frequency

 

50/60 Hz

Maximum VFD input current

37A

Low Voltage DC Specifications - Oil Cooler Fan Voltage and Power

 

Fan motor voltage

24VDC

Total fan motor current

9A

Additional power may be required to support customer logic and control circuits.

*Contact factory for information about single-phase applications.

**Reduced capacity at 50 Hz.

13

2006SSD-75 R4 (10/10)

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Emerson SZO56, SZO44, SZV44, SZV32 manual Electrical Requirements, Typical Compressor Module power supply requirements