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Specialized - Ignitron ·IgnitronPowerSwitch

PL5551

Water-cooled ignitron for single- and three-phase resistance-welding control and high-current industrial switching.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

Water-cooled ignitron for single- and three-phase welding control; equivalent electrically to PL5551A except for thermostat provisions.

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.

Water-cooled ignitron for single- and three-phase welding control; equivalent electrically to PL5551A except for thermostat provisions.

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 Philips Electron Tubes Handbook V3

Published operating points and test conditions from this source.

SECTION 1

IgnitronPowerSwitch

Other

  • t o-ti(q

    4 degC

    Typical characteristics | t o-ti(q = 4 1/min.) = max. 4 °C

  • Mains voltage

    250 V

    Limiting values | 4 ) For mains voltages between 250 V and 600 V. Tav is

  • Mains voltage

    600 V

    Limiting values | 4 ) For mains voltages between 250 V and 600 V. Tav is

  • T(lsurge) = max

    0.15 s

    Welding service | T(lsurge) = max.0.15 sec

  • Ignitor current

    100 A

    Limiting values | IF. = max. 100 A

  • pour un temps d'amorgage de

    100 µsec

    Ignitor characteristics | pour un temps d'amorgage de 100 µsec u max.. di/dt =

Characteristic

  • Firing current

    -8 A

    Ignitor characteristics | Firing current = 6-8A

  • l'amorg

    4 a

    Ignitor characteristics | l'amorg4age 12 A

  • l'amorg

    12 A

    Ignitor characteristics | l'amorg4age 12 A

  • Vc Dens lea conditions de i'onctionnement

    50 V

    Ignitor characteristics | Vc Dens lea conditions de i'onctionnement = 650±50 V

  • (conduction time

    5 s

    Intermittent rectifier service | (conduction time 05sec

  • Peak inverse anode voltage

    1200 V

    Intermittent rectifier service | Va fwd =Va invp=1200V

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

IgnitronPowerSwitch

Other

  • Application: 4.C. control: two tubes in inverse parallel

    4 A

    Application: 4.C. control: two tubes in inverse parallel

  • conuection will control 600 kVA at 250

    250 w

    conuection will control 600 kVA at 250 -

  • com.ection will control 600 kXVA at 250

    250 w

    com.ection will control 600 kXVA at 250 -

  • Irms

    10 ms

    Irms = max. 10 A

  • 5 280% of max. demand current (rms value)

    280 %

    5 280% of max. demand current (rms value)

  • 7 Max. value at the indicated voltage

    7 Ma

    7 Max. value at the indicated voltage

  • Irms

    10 ms

    Irms = maxX, 10 A

  • phase control 1is used

    1 a

    phase control 1is used

Characteristics

  • Voltage range 6

    6 V

    Voltage range 6

  • 5)uax. value at the indicated voltage

    5 ua

    5)uax. value at the indicated voltage

  • 6)For intermediate values Tavy is inversely proportional

    6 a

    6)For intermediate values Tavy is inversely proportional