Dry Contact Configuration | APC PML3DS-A, PMP4DS-A, PMP3S-A, PMF3S-A

APC MODULAR PANEL PRODUCTS Surge Protective Device (SPD)

OPERATION

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

·Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E.

·This equipment must only be installed and serviced by qualified electrical personnel.

·Turn off all power supplying this equipment before working on or inside equipment.

·Always use a properly rated voltage sensing device to confirm power is off.

·Replace all devices, doors and covers before turning on power to this equipment.

Failure to follow these instructions will result in death or serious injury.

DRY CONTACTS The modular panel SPD’s come with dry contacts. The connection for the dry contacts is located on the back of the diagnostic display panel (lower right corner). The dry contacts are 3-position, Form "C" type with Normally Open (NO), Normally Closed (NC) and Common (COM) connections. The unpowered state shall be closed between terminals NO and COM. This is also the alarm condition. The opposite state, closed between terminals NC and COM, indicates that power is on to the unit and that

no alarm condition exists (See Table 3). These contacts can be used for remote indication of the SPD’s operating status to a computer interface board or emergency management system.

The contacts are designed for a Maximum voltage of 24 VDC and a maximum current of 2 A. Higher energy applications may require additional relay implementation outside the SPD. Damage to the SPD’s relay caused by use with energy levels in excess of those discussed in this instruction manual are not covered by warranty. For application questions, contact your APC representative.

De-energize power to the modular panel before installing the dry contact wires. Care must be taken in installing the dry contact wiring because the terminals are on a moving door. Avoid the door hinge, any disconnect switches, and the high voltage areas of the enclosure when routing the wiring. To avoid the door hinge, secure the dry contact wires to the

existing cable harness which crosses the hinge. Once the dry contact wiring is secured on a non-moving point of the enclosure, it is the user’s responsibility to maintain separation between dry contact wiring and the power wiring in the enclosure.

Table 3: Dry Contact Configuration

Alarm Contact	Contact State with Power Removed
Terminals

NC	Normally closed

COM	Common

NO	Normally open

PMP3DS-A, PMG3DS-A, PML3S-A, PMG4DS-A, PMF4S-A specifications

The APC PML3DS-A, PMP3S-A, PMP4S-A, PMG4S-A, and PMP4DS-A are part of a product line designed for power management and distribution in various applications, from data centers to industrial setups. Each model boasts unique features and technologies that cater to specific operational needs while prioritizing efficiency, reliability, and safety.

The APC PML3DS-A is a highly efficient power management solution suitable for small- to medium-sized enterprises. It features intelligent monitoring capabilities, allowing users to track power usage and optimize efficiency. The model integrates advanced surge protection technology, safeguarding equipment from voltage spikes. With a compact design, it offers flexibility in placement while still providing robust operational support.

The PMP3S-A model focuses on scalability, making it an excellent choice for businesses anticipating growth. This power management unit is compatible with multiple configurations, allowing seamless integration into existing systems. One of its standout features is the energy metering functionality, enabling precise tracking of energy consumption. This feature is invaluable for organizations seeking to reduce costs and improve sustainability initiatives.

Next in the lineup, the PMP4S-A offers enhanced power distribution capabilities, designed to handle higher loads. This unit is equipped with modular design elements, allowing for customization based on specific requirements. Additionally, it features real-time load balancing technology that ensures even distribution of power across connected devices, reducing the risk of overload and enhancing system stability.

The PMG4S-A stands out for its advanced management interface, providing users with a user-friendly experience. Its web-based management system allows remote monitoring and control, facilitating rapid response to any issues that arise. The PMG4S-A also includes built-in redundancy features, ensuring uninterrupted power supply and enhancing overall system resilience.

Lastly, the PMP4DS-A is engineered with advanced diagnostic capabilities, identifying potential issues before they can impact performance. This proactive approach to power management is crucial for maintaining operational integrity in critical systems. It also provides advanced communication options, integrating seamlessly with existing network infrastructure for improved management and reporting.

Together, these models from APC represent a comprehensive solution for power management, balancing performance, scalability, and safety across various applications. Their advanced features and technologies make them essential components for businesses looking to enhance their operational efficiency and reliability in power distribution.