MPE
MPE Limited
Hammond Road
Knowsley Industrial Park Liverpool
L33 7UL
Contact
T: +44 (0)151 632 9100
E: sales@mpe.co.uk

HEMP Telephone Line Range

A range of HEMP protection filters for telephone lines for use on HEMP protected installations meeting E1 (short pulse) or E1 +E2 (short plus intermediate) pci requirements of MIL-STD -188-125-1 & -2. All lines are individually filtered and feature inductive input to offer both good continuous wave EMC performance and superior transient handling performance. All lines feature high-energy varistor transient suppressors at the input end.

Insertion Loss Performance


Part NumberNumber of LinesLengthWidthDepthWeight Approx (kg)
DS33570230090452
DS335714300175454
DS335728300340458
DS335733254720014317
DS3357510073060025060
Part NumberNumber of LinesLengthWidthDepthWeight Approx (kg)
DS338902345100753.5
DS338914345185756
DS3389283453507512
DS33582164203407517
DS338934073062025040
DS338946073062025058
DS33895100730100025090

Rated Voltage

  • 295Vac / 125Vdc

Test Voltage

  • 1250Vdc each line to case (Prior to fitting transient suppressors)

Rated Current

  • 125mA (300mA with slight performance derating)

Insulation Resistance

  • >100MΩ (Prior to fitting transient suppressors)

DC Resistance

  • >9Ω

Impedance line-earth

  • 300Ω

Impedance line-line

  • 600Ω

Full Load Operating Temperature Range

  • -40ºC to +50ºC

Peak Surge Current

  • 6.5kA (8/20s) (E1 only versions)
  • 40kA (8/20s) (E1 + E2 versions)

Insertion Loss in 50Ω system

  • See graph

Pass Band (300Ω)

  • 0 – 4kHz
All MPE installation filters are tested using the test methods defined within the following standards and meet or exceed the relevant performance and/or safety criteria defined within these standards:
  • Mil-F-15733
  • Mil-Std-220C
  • CISPR17:2011/BS EN 55017:2011
  • UL1283
  • LVD 2014/35/EU
  • DEF-STAN 59-411/MIL-STD-461
  • RoHS (2011/65/EU) & LVD (2014/35/EU)
  • USACE 13.27.54.01
  • UFGS 13.49.20.01
  • UKCA & CE
  • MIL-STD-188-125-1&-2
  • DEF STAN 59-188-1&-2
DS XXXXX / X e.g. DS33575#

DS XXXXX / X

e.g. DS33575#