Sankosha U-Series Gas Discharge Tubes (GDT) – Surge Arresters | Kouei Japan Trading

Sankosha U-Series Gas Discharge Tubes (GDT) – Surge Arresters

Manufacturer: Sankosha., Inc
Model: U-Series

Features:

Applications:

Part Number (Model A)	Part Number (Model B)	DC Breakdown Voltage⁽¹⁾	Impulse Breakdown Voltage		DC Holdover Voltage⁽³⁾	Impulse Life (10/1000μs 500A)	Impulse Discharge Current (8/20μs)		AC Discharge Current (50Hz)
Part Number (Model A)	Part Number (Model B)	100V/s	100V/μs	1kV/μs	DC Holdover Voltage⁽³⁾	Impulse Life (10/1000μs 500A)	1 Time	10 Times⁽⁴⁾	9 Cycles 1 Time	1 Second
U-1A	U-1B	75V	≤ 500V	≤ 700V	≤ 52V	300 Times	10 kA	5 kA	65 A	10A, 5 Times
U-2A	U-2B	90V	≤ 500V	≤ 700V	≤ 52V	300 Times	10 kA	5 kA	65 A	10A, 5 Times
U-3A	U-3B	145V	≤ 500V	≤ 700V	≤ 80V	300 Times	10 kA	5 kA	65 A	10A, 5 Times
U-4A	U-4B	230V	≤ 600V	≤ 750V	≤ 135V	300 Times	10 kA	5 kA	65 A	10A, 5 Times
U-5A	U-5B	250V	≤ 600V	≤ 800V	≤ 135V	500 Times	10 kA	5 kA	65 A	10A, 10 Times
U-6A	U-6B	300V	≤ 700V	≤ 850V	≤ 150V	500 Times	10 kA	5 kA	65 A	10A, 10 Times
U-7A	U-7B	350V	≤ 700V	≤ 850V	≤ 150V	500 Times	10 kA	5 kA	65 A	10A, 10 Times
U-8A	U-8B	400V	≤ 700V	≤ 850V	≤ 150V	500 Times	10 kA	5 kA	65 A	10A, 10 Times
U-9A	U-9B	470V	≤ 700V	≤ 850V	≤ 150V	500 Times	10 kA	5 kA	65 A	10A, 10 Times
U-10A	U-10B	600V	≤ 800V	≤ 1000V	≤ 150V	500 Times	10 kA	5 kA	65 A	10A, 10 Times
U-11A	U-11B	800V	≤ 1000V	≤ 1200V	≤ 150V	500 Times	10 kA	5 kA	65 A	10A, 10 Times

Notes:

DC Breakdown Voltage Ranges are:
± 20% for U-1 and U-2
± 15% for U-3, U-4, U-5, U-6, U-7, U-8, U-9, U-10 and U-11
Insulation Resistance for all parts in the U-Series is ≥ 10,000 MΩ measured at:
DC 50V for the U-1, U-2 and U-3
DC 100V for the U-4, U-5, U-6, U-7 and U-8
DC 250V for the U-9, U-10 and U-11
DC Holdover Voltage measured in accordance with the ITU-T K.12 or the IEEE C62.31-1987 Test Circuit
5 times each polarity
Capacitance measured at 1 MHz for all part numbers is ≤ 1.0 pF