The HD-PMT1 is a Class I lightning surge protector for main power distribution systems. It has the advantages of strong lightning withstand capability up to 35KA (Iimp), low voltage protection level (≤ 2.5KV), extremely low failure rate, no leakage current, strong interrupted flow capability (25KA), and no electric arc leakage.It can be combined into 2P, 3P, 4P structure and is suitable for TT/TN/IT grid type. It is the best choice for lightning protection at the primary distribution panel, the main distribution cabinet, and the main switch.
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Model
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HD-PMT1-35/260
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Number of modules
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2
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3
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4
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Suitable power grid type
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TT/TN-S/TN-C-S
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TN-C-IT
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TT/TN-S/TN-C-S
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Nominal voltage Un
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380V
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Maximum continuous working voltage Uc
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260V
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Voltage protection level Up
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2.5KV
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Maximum discharging current Imax（8/20μs）
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100KA
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Impact current Iimp
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35KA
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Short-circuit withstand current
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25KA
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Response time Ta
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100ns
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Pre-fuse
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125A
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Leakage current
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＜5uA
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Connecting wire diameter
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6mm2
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Operating temperature
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-40℃ to +70℃
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Humidity
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95%
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Altitude
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2000m
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Protection degree
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IP20
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Flame retardant level UL94
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V0
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Installation
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Clip on 35mm electrical guideway
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Protection mode
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L/N-PE
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3L-N/PE，3L-PE
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3L/N-PE
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External dimension
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72*90*65mm
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108*90*65mm
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144*90*65mm
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Ground the null line repeatedly when Long-distance overhead incoming lines enter buildings.
Plug the power phase line (L) and null line (N）into corresponding connector of the electric surge protector and make sure it's firm and reliable. Connect the ground terminal of arrester with the ground lead of lightning protection well (recommended earth resistance ≤4Ω).
Suggested specification of the lead wire: no less than 6mm2, short and straight.
