APC PM3 user manual Electrical Connections

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Service Clearance

In addition to national and local code requirements, 32 inches of service clearance is needed at the front of the SPD.

Equipment Performance

To obtain the maximum system performance, the unit must be located as close to the circuit to be protected as possi- ble, minimizing the interconnecting wire length. For every foot of wire length, approximately one (1) nanosecond of turn-on/turn-off time will be added, and approximately 175 volts (6kV/3kA, 8/20 microseconds) will be added to the clamp voltage.

For optimum transient surge protection, staged surge suppression should be implemented at the service entrance and all other electrical connections to the building (telephone, CATV, etc.). It should also be implemented at recognized surge generating loads within the building (arc welding rigs, large motors, switched capacitors, etc.). Additionally, it should be implemented for sensitive electronic loads (computer equipment, facsimile machines, copy machines, solid state motor drives, variable frequency drives, etc.). For interconnected electronic loads (via data cabling), surge pro- tection devices should also be utilized to protect the devices on either end of the interconnecting data cables.

APC manufactures a complete line of surge protection devices for both alternating current (AC) and direct current (DC) applications. Contact an authorized APC reseller, or order directly from APC at www.apc.com.

Product Orientation

To decode the Model Number and determine the unit’s configuration, locate the printed nameplate on the inside of the unit door. Note: The Serial Number, Date of Manufacture, and UL 1449 Suppression Voltage Rating (SVR) are also on the unit identification nameplate. The Model Number can be decoded as follows:

‡30￿LGHQWLILHV￿D￿6XUJH$UUHVW￿3DQHO￿0RXQW￿SURGXFW￿￿7KH￿IROORZLQJ￿OHWWHU￿LQGLFDWHV￿WKH￿YROWDJH￿DQG￿ZLULQJ￿FRQ￿

ILJXUDWLRQ￿RI￿WKH￿GHYLFH￿

‡)ROORZLQJ￿WKLV￿OHWWHU￿LV￿WKH￿QXPEHU￿￿￿￿7KLV￿QXPEHU￿LGHQWLILHV￿WKH￿VXUJH￿FXUUHQW￿UDWLQJV￿WR￿EH￿￿￿￿N$￿SHU￿SKDVH￿

‡)ROORZLQJ￿WKH￿QXPEHU￿￿￿LV￿WKH￿OHWWHU￿;￿￿7KLV￿LQGLFDWHV￿WKDW￿WKH￿XQLW￿LV￿QRQ￿PRGXODU￿

‡)ROORZLQJ￿WKH￿OHWWHU￿GHVLJQDWLRQ￿LV￿RSWLRQDO￿HTXLSPHQW￿￿VKRZQ￿DV￿￿'￿ ￿'LVFRQQHFW￿￿￿6￿ ￿6XUJH￿&RXQWHU￿

￿2SWLRQV￿DUH￿GHWDLOHG￿ODWHU￿LQ￿WKLV￿PDQXDO￿

System Grounding

An equipment grounding conductor must be used on all electrical circuits connected to the SPD. This requirement is primarily for safety, although SPD performance is enhanced by proper grounding. Proper operation of any surge sup- pression system or device depends on a proper grounding system. Incorrect grounding practices will reduce the effec- tiveness or interfere with SPD system operation and performance, as well as endanger personnel and equipment. For the best performance, use a single point ground system where the service entrance grounding electrode system is con- nected to and bonded to all other available electrodes, building steel, metal water pipes, driven rods, etc. For sensitive electronics and computer systems, it is recommended that the ground impedance measurement be 25 ohms or less. When a metallic raceway is used as an additional grounding conductor, an insulated grounding conductor should be run inside the raceway. Adequate electrical continuity must be maintained at all raceway connections. Do not use iso- lating bushings to interrupt a metallic raceway run. A separate isolated ground for the SPD is NOT recommended.

**On 4-Wire Power Systems, neutral to ground bonding should be

installed per the NEC. Failure to do so could cause equipment damage.**

ELECTRICAL CONNECTIONS

Overcurrent Protection

The Surge Protection Device (SPD) draws very little current under normal conditions and will only conduct for a brief duration upon encountering a transient surge voltage. APC SPDs contain UL Listed internal fusing to protect against abnormal voltage conditions. Note: Fuses are not replaceable.

Voltage Rating

Prior to mounting the SPD, verify that the unit has the correct voltage rating by checking the nameplate voltage or model number. The service type should match the intended power source. See Table 1 for the voltage rating and ser- vice type of the SPD.

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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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