Parallel Connection

When making a parallel type of connection (Figure 2), the length of the wiring to the Surge Protection Device (SPD) must be kept as short as possible to substantially enhance the performance. Long wire runs are to be avoided for the unit to perform as intended.

To reduce the impedance the wire displays to surge currents, the phase, neutral (if used), and ground conductors are to be routed within the same conduit and should be tightly bundled or twisted together to optimize performance of the unit. Sharp bends in the conductors are to be avoided.

Wire Size

With a parallel connection, the size of the wiring to the SPD is independent of the ampere rating of the circuit to be protected. The recommended wire size is based on the unit’s transient surge current capabilities. #6 AWG is the rec- ommended wire size for phase, neutral, and ground.

**Surge Protection Devices are designed for use on the load side

of the service entrance disconnect only**

PM SERIES INSTALLATION INSTRUCTIONS

Typical Unit Installation - Three Phase WYE, 4 Wire, plus Ground

This section provides basic installation instructions for the PM3 SPD. Per UL 1449 Paragraph 1.4, SPDs "are intended for installation on the load side of the main overcurrent protection". Locate the SPD as close as possible to the circuit to be protected to minimize the wire length. This will optimize SPD performance.

Note that these instructions are not intended to supercede local or national codes. The installation should be per- formed by a licensed electrician. To install a PM3 SPD, refer to Figure 3 and proceed as follows:

1.Unpack and inspect the unit for signs of damage. If the unit is damaged, contact APC Customer Service (at 1-800- 800-4APC). See Page 14 for obtaining service under the Warranty.

2.Locate where the SPD will be installed. Ensure the wire lengths from the SPD to the service panel are kept to a minimum.

3.Carefully remove the front cover by loosening the four (4) captive screws that secure the front cover to the chassis. Insure the ribbon cables attached to the diagnostic faceplate are not mechanically stressed or become unplugged.

DO NOT ALLOW THE DIAGNOSTIC FACEPLATE TO HANG BY THE RIBBON CABLES!

4.Two holes are provided for the installation of wiring. The unit is shipped with a three (3) piece plug for use in plugging the unused hole. If the desired hole is plugged, remove the plug by removing the wing nut along with the inner and outer plug pieces.

5.In order to keep wiring length and bend radii at a minimum, APC recommends that wiring be installed through the left side of the SPD. APC also recommends that the hole be sealed with putty after wiring installation.

6.Drill four (4) pilot holes (mounting holes in the SPD are 5/16" in diameter) to provide for mounting of the SPD.

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All electrical connections should be performed by a qualified (licensed) electrician. All wiring must comply with the National Electric Code (NEC) and applicable local codes.

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APC PM3 user manual Parallel Connection, Wire Size, PM Series Installation Instructions
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PM3 specifications

The APC PM3 (Power Manager 3) is a sophisticated power management solution designed for network and data center environments. This device is essential for ensuring reliability, efficiency, and effective management of power resources.

One of the main features of the APC PM3 is its ability to monitor and control power usage in real-time. This feature allows users to track power consumption and environmental conditions, providing critical data that can lead to more informed decisions regarding energy efficiency. The PM3 can measure input and output power loads, energy consumption, and other metrics which can be accessed via its user-friendly interface.

The technologies integrated within the APC PM3 enable advanced monitoring capabilities. It employs an innovative metering system that provides precise measurements of power usage. The built-in LCD display offers easy-to-read information, including voltage, current, power factor, and power consumption. This information enables users to quickly assess the performance of their power systems.

Communications play a vital role in the functionality of the APC PM3. It supports SNMP (Simple Network Management Protocol), allowing for seamless integration into existing network management systems. This facilitates remote monitoring and management, crucial for maintaining uptime in critical operations. Moreover, with the advanced notifications feature, users can receive alerts via email or SMS, which can help in taking proactive measures against potential power-related issues.

Another significant characteristic of the APC PM3 is its scalability. It is designed to be adaptable to various environments and can be integrated with other APC products, enhancing the overall power management strategy. This flexibility makes it suitable for small offices as well as large data centers.

In terms of safety and reliability, the APC PM3 is equipped with built-in surge protection to safeguard critical equipment from power anomalies. This feature is essential for maintaining the integrity of data and minimizing the risk of downtime due to unexpected power fluctuations.

Critical for today’s data-driven infrastructure, the APC PM3 empowers organizations to minimize energy costs and improve operational efficiency. By providing comprehensive insights into power management, the device stands as a cornerstone for smart energy usage, promoting sustainability while ensuring that power delivery remains uninterrupted. Overall, the APC PM3 is a reliable and advanced solution that adds significant value to power management strategies in any organization.
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