TransientProtection
AC Power Line Transient Protection
In the process of power distribution, transient electrical energy (including, but not limited to, lightning strikes, intermittent short circuits, and switching transients) can be introduced onto power lines. Such transient energy can be very damaging to electronic hardware, and can also cause data corruption. Under these circumstances, NCR recommends the use of AC power transient suppressors. Such protection devices are intended to guard against power line transients that can result in hardware damage and various system or program errors.
Improvement of any deficiencies in power quality is a customer responsibility. Malfunction and/or component failure as a result of power quality problems are/is not covered by the NCR Maintenance Agreement. NCR accepts no liability for any such occurrence nor for its consequences.
When power transient suppression is required, the suppressors used should meet the following minimum requirements:
| • | Dissipate energy to match the appropriate location categories as defined by IEEE Standard C.62.41.2-2002. |
| • | Be of the voltage limiting (clipping), or tracking filter type. The suppressor must not clamp the voltage to zero, and must self-recover after the passage of the transient. The suppressor may be of the hybrid type construction that makes use of various technologies in order to meet speed and dissipation requirements. |
| • | TranUpon failure, exhibit a positive indication of its failure such as a blown fuse or tripped breaker. |
| • | Be listed by the accepted safety organization for the country involved (UL, CSA, VDE, ETL, and so on) and the installation must conform to local, state, and national electrical |
Data Line Transient Protection
The nature of the transient phenomenon may extend to the data communication lines connected to this equipment. It is the responsibility of the customer to install and connect a data line transient suppression system to correct or prevent any deficiencies. Such systems must meet the following minimum requirements:
| • | Be of the voltage limiting type and must self-recover after passage of the transient. |
| • | Must be designed to avoid signal degradation for the given interface they are attached to. |
| • | Be installed in accordance with all applicable local, state, and national electrical codes and regulation. |
Note: NCR provides a full line of both AC power and data line transient surge suppressors to protect your RealPOS system and reduce downtime and extend the life of the RealPOS Retail Solution. For sizing and product information, please call NCR Site Preparation Services at 800-257-0458.
The following product offerings are available from NCR Site Preparation Services:
| • | UPS -Uninterruptible Power Systems |
| • | Provides battery backup for power outages and brownouts. |
| • | Includes AC and data line surge protection. |
| • | If needed, certain models provide basic voltage regulation. |
| • | Small size provides easy installation. |
| • | Line Conditioners / Filters |
| • | Incorporates an Isolation transformer or filter that provides 100% isolation from disturbances on the incoming AC power line. |
| • | Removes EMI/RFI noise that causes equipment lockups. |
| • | Reduces common mode noise issues and surges/transients. |
| • | Significantly reduces POS downtime and component failure. |
| • | Transient Voltage Surge Suppressors |
| • | Provides protection from catastrophic AC surges/transients. |
| • | Provides data line protection from catastrophic surges that can migrate onto the data line and network. |