Sidactor Protection Thyristor Products Page 35 SIDACtor Protection Thyristor Products

SIDACtor Protection Thyristors 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/23/17 Figure 3.1: Application of Lightning and AC Power Fault Test Voltages T EUT R G S 2 S 1 Test Generator Limiting Resistance (If Specified) Voltage Source S 3 S 4 S1 S2 S3 S4 A1 CLOSED OPEN OPEN CLOSED A2 OPEN CLOSED CLOSED OPEN A5 CLOSED OPEN CLOSED OPEN Table 3.5: Connections to Test Generator For equipment that provides or receives remote power (i.e. span powering, PoE, etc.) over the copper conductors, GR-1089 contains an objective (NOT a requirement) that a coupling element should be used to isolate auxiliary or load equipment from the surge source for 10 repetitions of surge test #3 (Table 3.6 below), then the remaining 15 repetitions should be performed by applying the surge directly to the port. This coupling element is used to reduce the surge energy that would otherwise enter the power source (please see Figure 4-3, 4-4, 4-5, 4-6, 4-7, and 4-8 of GR-1089-CORE Issue 4 for more details). For all First Level lightning and power fault events, a total of three ports of the EUT shall be tested. If during test 3 (or alternatively Test 1), the EUT conducted current exceeds 95A OR the voltage measured across the EUT port exceeds 95% of the voltage-limiting value of the primary protector, then no further coordination tests are required for Type 1, 3, and 5 ports. By using the Littelfuse TeleLink fuse and SIDACtor technology (C, D, or E rated) or Greentube TM gas plasma arresters in combination, this 95A threshold should easily be reached and thus GR-1089 testing is greatly simplified. Otherwise, a coordination test sequence is required. Table 3.6: First Level Lightning Surge Tests Test (notes 1&2) Surge Voltage (V PK ) Waveform ( s) Surge Current (per Conductor) (A) Repetitions Each Polarity Test Connections (Table 3.4) 1 600 10x1000 100 25 A 2 (note 3) 1000 10x360 100 25 A 3 (note 3) 1000 10x1000 100 25 A 4 2500 2x10 500 10 B 5 1000 10x360 25 5 (note 4) Notes: 1. Primary protectors are removed for all tests. 2. For EUT containing secondary voltage limiting and current limiting protectors, tests are to be performed at the indicated voltage(s) and repeated at a reduced voltage and current just below the operating threshold of the secondary protectors. 3. Test 1 and 2 can be replaced with Test 3 or vice versa. 4. This test is to be performed on up to 24 conductors simultaneously with respect to ground. Table 3.7: Protection Coordination Lightning Surge Test Peack Voltage V Peack Current A Waveform s Repetitions 400-2000 100 A at 1 kV 10x1000 10 Refer to the equipment supplier documentation for specifications on the primary protection with which the equipment is designed to coordinate. The maximum switching voltage threshold value for this primary protector must comply with GR 974 (1 kV for a 1 kV/ s event). This coordination test procedure requires that the peak voltage of this test start at the primary protector's specified voltage- limiting value. This value must be a minimum of 400 V and a maximum of 1000 V. The primary protector must effectively turn on during each of these conditions Second Level Lightning Surge Test The Second Level Lightning Surge Test presented in table 3.8 does not require the EUT to pass operationally, but GR 1089 does require that the EUT not become a fire, fragmentation or electrical safety hazard. This is referred to as passing "non-operationally." Table 3.8: Second Level Lightning Surge Test Test Surge Voltage (V PK ) Waveform ( s) Surge Current (A) Repetitions Each Polarity Test Connections 1 5000 2x10 500 1 B Notes: 1. Primary protectors are removed for all tests. 2. For EUT containing secondary voltage limiting and current limiting protectors, tests are to be performed at the indicated voltage(s) and repeated at a reduced voltage and current just below the operating threshold of the secondary protectors. First Level Lightning Surge Test Regulatory Requirements (continued)

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