6958

Water-cooled double-grid ignitron for industrial rectifier and inverter service, providing controlled high-current mercury-pool switching.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: B9A
Base pins: -
Nominal heater: -

Description

The GL-6958 is a double-grid ignitron designed for industrial rectifier or inverter applications, with operation at peak inverse voltages as high as 4000 V and water cooling.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B9A
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

Rectifier peak inverse voltage: 4000 V
Rectifier peak forward current: 2000 A

Ignitron section. Published continuous-duty ratings include 4000 V peak inverse anode voltage, 2000 A peak anode current and 275 A continuous average anode current; non-promoted grid/ignitor/fault ratings retained as parameters.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

IgnitronPowerSwitch

Other

Maximum Peak Inverse Voltage
4000 V
PeakForwardCurrent
2000 A
ContinuousAverageAnodeCurrent
275 A
ContinuousDuty
FaultCurrentForward
15000 A
Fault
MaximumFaultDuration
0.015 s
Fault
ShieldGridPeakForwardVoltageMaximum
500 V
ControlGridPeakInverseVoltageMaximum
200 V