供应HR-21/22 DC-Block,高压隔直器直流隔断器
HR-21/22  DC-Block
高压隔直器直流隔断器隔直环，超高压直流隔断器，DC-BLOCK，地铁隧道用隔直环

DC  Blocks,  HR-21/22    series

High  Power,  Inner/Outer    and  Outer  Blocks

380  –  2,500    MHz,  N  or  7-16  mm


                                                                                                                                                                        Multi-Band  Frequency  Range

250  Watt  Average  Power  Rating

        3  kV  High  Voltage  Rating

?        Minimal  RF  Insertion  Loss

?        Very  Low  Passive  IM

?        RoHS  compliant

?        High  Reliability

?        N  or  DIN  connectors


These  DC  Blocks  are  used  to  prevent  the  flow  of  direct  current  and  low  frequency  current  surges  along  the  inner  and  outer  conductors    of  a  transmission  line,  while  permitting  the  unimpeded  flow  of  RF  signals.  Applications  include  the  blocking  of  current  surges  in  subway  tunnels  and  at  antenna    sites  during  lightening  storms.  HR-21  series  is  similar  except  only  the  outer  conductor  is  blocked.

The  unit  consists  of  a  length  of  coaxial  line  with  a  series  capacitor  in  both  the  center  conductor  and  outer  conductor  to  block  the  flow  of  low  frequencies,    while  passing    RF  with  negligible  loss  or  reflections.  Options  for  different    polarity  or  alternate    connectors    are  available  on  request.    (11/09)


Specifications  Model  HR-22D  and  HR-22N  Block:            Inner  and  Outer  Impedance:          50Ω  nominal  Intermod.  Distortion:      <-150    dBc

(2  tones  of  +43  dBm)

Environment:                                                                                                  -35°C  to  +75°C  Finish:              Delrin  plastic  Connector  Finish:            Silver  or  triplate  Model  HR-21D  and  HR-21N  as  above  except  Block:                                                        Outer  only

  

Model  Numbers                          Connectors                                                                  Frequency  Range,  MHz                                                  Power  Rating        Breakdown        Weight

In/Outer        Outer  Block                              (m  &  f)                                                                                                                            380-520        520-1700        1700-2200        2200-2500            Avg./peak  Voltage  DC      oz.  (g)  nom


HR-22N            HR-21N                        N                      Loss,  dB      <0.12              <0.08                    <0.08              <0.08      250W/10kW            3  kV  max                        5.0  (140)  VSWR                              <1.40:1                            <1.20:1          <1.20:1            <1.20:1


HR-22D            HR-21D            7-16    mm          Loss,  dB                          <0.14                                                      <0.12                  <0.2                                <0.2                        250W/10kW            3  kV  max        12.1  (340)  DIN            VSWR                                <1.40:1            <1.15:1              <1.20:1      <1.35:1