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  • UL 1449 Rated Surge Protection
    voltages are rounded up to the nearest UL rating (i.e., a SVR of 380 Volts, would be classified as a UL 1449 400 rating), so please consult the manufacturer for the actual suppressed voltage rating.
  • SPD Industry Code Changes (.pdf)
    the application of the SPD, not the performance or safety of the devices. UL 1449 third edition. Surge Protection. For Business-Critical ContinuityTM. ANSI /UL1449 Third Edition Safety Standard. (New UL and NEC standards means new performance levels,. test procedures and markings to SPD products
  • Manufacturing & Test Standards for SPD's
    voltages or surge. events that originate from equipment within a facility are not within the scope of this document. Advanced Protection Technologies, Inc. Rev 10/13/09. 727-535-6339 PH · 800-237-4567 · 727-539-8955 FX. www.aptspd.com. UL 1449 Third Edition (Rev 3.0) ­ 2009 UL Standard for Safety
  • Surge-Trap and the Different kA Ratings
    of SPD, it is up to the manufacturer to. n. for 15 pulses and remain functional this is a straight "bigger is. choose a nominal discharge current (I ) of either 3 kA, 5 kA,. n. better" rating. However UL 1449 3rd edition limits this to 20kA. 10 kA, or 20 kA. UL 1449 3rd edition states: 15 surges
  • Design Features for SPD/TVSS Safety (.pdf)
    , or is out of normal production specifications? APT spends the extra effort to chase. down answers to these situations. Summary ­ UL 1449 provides good safety guidelines. APT prefers an additional level of safety. and expends substantial resources and energy to that goal. Failure testing is an inexact
  • Truth of the Matter: AC Tutorial
    , with an oscilloscope, at the SPD. Both, actually. terminals when standard test waveforms, such as defined. by ANSI/IEEE C62.41-1991, are applied. The purpose is to eliminate electrical "noise" and this is. usually accomplished by adding capacitors to the protec-. Underwriters Laboratories Standard UL 1449

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