AX5551A

Water-cooled sensing-plate ignitron for industrial welder control. This heavy-current mercury-discharge device combines rectification with controlled switching in resistance-welding power systems.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

Water-cooled sensing-plate ignitron for welder-control service; electrically based on the corresponding 5551 family.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: -
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

IgnitronPowerSwitch

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Promoted only where the locked section schema has a direct semantic match; remaining transmitting, receiving, thyratron, ignitron, capacitance, and control data are retained in TUBE_SECTION_PARAMETER.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

IgnitronPowerSwitch

Other

RMS voltage range
250-600 V
Ignitron;WelderControl
Maximum KVA demand
600 kVA
Ignitron;WelderControl
Corresponding average current
30.2 A
Ignitron;WelderControl
Maximum average-current corresponding KVA demand
200 kVA
Ignitron;WelderControl
Corresponding current
56 A
Ignitron;WelderControl
Cooling
Water
Ignitron