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New Improved Littelfuse 1026 maximum duty arrester series
a
b
e
3 ELECTRODE GDT a=TIP b=RING e=GROUND (centre electrode) GRAPHICAL SYMBOL
55 KILO AMPS CAPABILITY. (SINGLE SHOT) 40 KILO AMPS CAPABILITY. REPETITIVE LITTELFUSE MAXIMUM DUTY 3 TERMINAL ARRESTER TOTALLY NON-RADIOACTIVE, UL RECOGNISED
ELECTRICAL CHARACTERISTICS DC sparkover Impulse sparkover (max) Alternating discharge current Impulse discharge current Insulation resistance Capacitance (max) Holdover Gap to gap transfer time Voltage colour code Type colour code Impulse discharge current Single shot KA (V) (V) (A) (KA) () (pF) (V) (ns) 275V 200-350 800 40 40 2 x 10 2.5 150 100 BLACK BLACK 55 400V 300-500 900 40 40 2 x 10 2.5 150 100 YELLOW BLACK 55 700V 490-910 1000 40 40 2 x 10 2.5 150 100 RED BLACK 55 (i) (ii) (iii) (iv) (v) (vi) (vii) (viii)
(i) (ii)
End to centre or end to end, measured using a rate of rise of voltage of 100V/s. End to centre, measured using a rate of rise of voltage of 1KV/sec.
(iii) Measured at 1 sec duration, 5 shots @ 3 min intervals, 50Hz. (iv) Measured at 8/20sec, 5 shots each polarity between one end and centre. (v) Measured at 100V dc. (vi) Measured at 1 MHz, end to centre. (vii) Measured using test based on ITU (formally CCITT) K12, section 4.2, test 3, with PS2 set to 0V & PS1 variable. (viii) Measured using a voltage rising at 1kV/s (relative to the centre electrode) applied simultaneously to both end electrodes via separate 1k resistors. These devices are designed so that the failure mode is most likely to be open circuit rather than short-circuit. They may be used as a replacement for the 16 series (now obsolete) to handle higher a.c. fault currents.
ORDERING INFORMATION
SL 1026 -
All dimensions in mm
Voltage
w w w. l i t t e l f u s e . c o m
75

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