Connecting the DC Load Cables. Eaton Electrical APS6-059, APS3-060, APS3-061, 10640205, APS3-058, APS6-058, APR48, APS3-059

Data Power Solutions Quick Start Guide

Notas importantes referidas a los sistemas de montaje en un rack:

•

Si este sistema de energía dc está instalado en un montaje cerrado o para varias unidades, asegúrese de que la temperatura ambiente sea inferior a los 40°C.

•

Asegúrese de que el flujo de aire no esté restringido.

•

Asegúrese de que el peso del sistema sea adecuado y de que tenga un soporte parejo.

•

Tome nota de la corriente de entrada CA máxima establecida en la placa de características.

Asegúrese de que el suministro CA tenga una capacidad nominal correcta.

•

Asegúrese de mantener una conexión a tierra confiable. Compruebe cuidadosamente la continuidad a tierra desde el circuito derivado al sistema de energía CC.

Clearance Requirements

•

•

•

All APS dc power systems (rack-mounted and desktop versions) require the following minimum clearances:

Front and Rear Clearance – 50mm (2”) from walls and other equipment, required for optimum system cooling and access.

Top and Bottom Clearance – None

Connecting the DC Load Cables

Before you start connecting the dc load and battery cables (if applicable) to an APS dc power system, please read the following DC Installation Practices:

• To easily distinguish between positive and negative load cables, we recommend using cables with different colors (as specified by local wiring regulations). The same applies to battery cables (if applicable).

• To reduce inductive coupling, separate dc load, battery and communications cabling from ac supply cables. If the cables have to cross, run them at right angles to the ac supply cables.

•

•

In order to minimize parasitic cable inductance and reduce electromagnetic interference

(EMI), all dc load cables should be routed in close proximity to one another, and large current loops should be avoided. The same applies to battery cables (if applicable).

Eight dc outlets (labeled 1 to 8) are available for connecting your equipment power cables to the APS dc power system. Each dc outlet is protected by a corresponding 6A or

25A circuit breaker (accessible from the dc distribution at the front). The current rating of the corresponding circuit breaker determines the current rating of a dc outlet. The dc outlets are floating to meet the isolation requirements for powering Power over Ethernet

IEEE802.3af compatible devices. In non-Power over Ethernet applications the positive or negative output of the dc outlets can be referenced to earth, if required.

DC Load Cable Specifications

No dc load cables are supplied with APS dc power systems. dc load cables are sized differently, depending on whether you connect to 6 A or 25 A dc outlets. All dc load cables must meet the following specifications and no other cable sizes must be used.

6A dc Outlets: UL 1015, 18 AWG (1mm), multi-strand cable

25A dc Outlets: UL 1015, 12 AWG (4mm), multi-strand cable

Cable Length: 3m (10 feet) maximum

16

Copyright © 2006-2009 Eaton Corporation. All Rights Reserved.

10640205 February 2009

Data Power Solutions Quick Start Guide

APS3-05X and APS6-05X (Rack-Mounted Versions)

1 Strip approximately 10mm ( ⅜ ”) of the insulation from the cable ends.

2 Terminate the negative load cable(s) at the (-) terminal block(s) of the dc outlet(s).

3 Terminate the positive load cable(s) at the (+) terminal block(s) of the dc outlet(s).

‡

Ensure that the polarity at the dc outlet(s) matches the power input polarity of your equipment. Connecting reverse polarity equipment power cables to the dc outlets of an APS dc power system might cause damage to your equipment. Such damage is not covered by our warranty.

‡

Ensure that the correct cable sizes have bee used (18AWG for 6A outlets and 12AWG for

25A outlets).

4 To ensure reliable connections at the terminal blocks of the dc outlets, torque the clamp screws 0.4 – 0.6Nm (3.5 – 5.3 lb-in).

5 Use cable-ties (not supplied) and the provided cable-tie holes on the cable support bracket to tie down the load cables.

APS3-06X (Desktop Versions)

•

•

•

•

•

Before proceeding check you have:

4 x load cable clamps

8 x 25mm blunt ended screws

8 x 5mm and 4 x 10mm cable sleeves (50mm long)

‡

Depending on the cable sizes, not all sleeves will be required.

1mm

2

(18 AWG) cable for connection to 6A outlets.

4mm 2 (12 AWG) cable for connection to 25A outlets.

Copyright © 2006-2009 Eaton Corporation. All Rights Reserved.

10640205 February 2009

17

Data Power Solutions Quick Start Guide

Step 1- Fit load cable clamps

• Insert the square ends of the load cable clamps into the holes in the back of the system.

• Engage two turns of each retaining screw.

This will ensure that the clamp does not move when the wires and sleeves are inserted.

‡

Fit all clamps even if you do not use them all. Tighten unused clamps to prevent access to the dc outputs.

Step 2 – Strip cable ends

• Strip approximately 10mm (3/8”) from the cable ends. We recommend fitting cable ferrules over the cable ends.

Step 3 – Fit cable and sleeves

‡

To maintain safety approvals insert only the following numbers of cables per clamp, with sleeves where applicable. This will ensure that cables are retained correctly in their clamps.

• Feed the cables through the clamps as follows, depending on cable size.

1mm 2 (18 AWG) – 2 cable pairs* per clamp:



2 x 5mm sleeves



10mm sleeve

‡

* If only one cable pair is required then use a dummy pair with sleeves to make up the space.

4mm 2 (12 AWG) – 1 or 2 cable pairs per clamp.

Step 4 – Terminate cables

•

•

•

Terminate the negative load cable(s) at the (-) terminal block(s) of the dc outlet(s).

Terminate the positive load cable(s) at the (+) terminal block(s) of the dc outlet(s).

Tighten the terminal screws. Required torque: 0.4 – 0.6 Nm (3.5 – 5.3 lb-in).

‡

Ensure that the polarity at the dc outlet(s) matches the power input polarity of your equipment.

Connecting reverse polarity equipment power cables to the dc outlets of a power system might cause damage to your equipment. Such damage is not covered by our warranty.

‡

Ensure that the correct cable sizes have been used (1mm2/18 AWG for 6 A outlets and

4mm2/12 AWG for 25 A outlets).

18

Copyright © 2006-2009 Eaton Corporation. All Rights Reserved.

10640205 February 2009