Date : September 05.2012 To: PRODUCT R Product Description : ZNR SURGE ABSORBER Product Part Number : ERZE07A : ERZE07A : ERZE07B : ERZE07E : ERZE07F Prepared by : Engineering Section Circuit Components Business Unit Contact Person : Industrial Devices Company, Masayoshi Kanazawa Title Charge Panasonic Corporation : 1037-2 Kamiosatsu, Chitose City, Check by : Masashi Goto Hokkaido 066-8502 Japan Title : Engineer CLASSIFICATION PRODUCT REFERENCE DATA SHEET SUBJECT 1 - 22 ZNR SURGE ABSORBER E-SERIES (Bulk Type) DATE Aug. 1, 2012 HANDLING PRECAUTIONS Precautions for Safety In the case that a ZNR surge absorber (Type D, Series E ) (hereafter referred to as the ZNR ,or product name) is used , if an abnormality takes place because of peripheral conditions of the ZNR (material, environments, power source conditions, circuit conditions, etc. in equipment design), fire, electric shock, burn, or product failure may be occur. The precautions for this product are described below, understand the content thoroughly before usage. For more questions, contact us. 1. Precautions to be strictly observe 1.1 Confirmation of performance ratings Use the ZNR within its rated range of performance such as the Max. allowable voltage, withstanding surge current, withstanding energy, impulse life (surge life), average pulse power, and operating temperature range. If used outside the range, the ZNR can be degrade and have element fracture, which may result in smoking and ignition. 1.2 To avoid accidents due to unexpected phenomena, take the following measures 1) In the event of fracture of the ZNR, its pieces may scatter hence, put the case or cover of the set product in place. 2) Do not install the ZNR near combustible substances (polyvinyl chloride wires, resin moldings, etc.). If it is difficult to do, install a nonflammable cover. 3) Across-the-line use When the ZNR is used across a line, put a current fuse in series with the ZNR. (Refer to Item 2.1, 1) (4) and Table 1.) 4) Use between line to ground (1) In the case that the ZNR is used between a line to the ground, the short-circuit of the ZNR may not blow the current fuse because of grounding resistance, which may cause smoking and ignition of the ZNR s exterior resin. As the measure against it, install an earth leakage breaker on the power supply side of the ZNR position. If no earth leakage breaker is installed, use a thermal fuse together with a current fuse in series. (Refer to Table 1.) (2) In the case that the ZNR is used between a live part and metal case, a electric shock may develop at a short circuit of the ZNR hence, ground the metal case to the ground or keep it from the human body. 2. Application notes 2.1 Pay attention to the following items to avoid the shortened life and failure of the ZNR 1) Circuit conditions (1) Select a ZNR of which the maximum voltage including fluctuations in source voltage allows for the maximum permissible circuit voltage. (Refer to Table 1.) (2) In cases that surges are intermittently applied at short intervals (for example, in the case that the voltage of the noise simulator test is impressed), do not cause them to exceed the ZNR s rated pulse power. (3) Select a ZNR recommended in Table 1. <1> Across the Line (Line to Line) use If possible, use a part No. marked with * incase of voltage temporarily rises load unbalance of separately-wired loads, short between hot and neutral-line, open of neutral line in single- phase-three-wired system, and due to resonance at switching for a capacitive, inductive load. Note/Revision Panasonic Corporation