JOSLYN, 1740 SERIES

PRIMARY COAXIAL SURGE PROTECTOR
75 Ohm Powered and Unpowered Coax, DC to >1GHz
UL Listed 587N

 

The JOSLYN 1740 Series of Primary Coaxial Surge Protectors is designed for Broadband Network and other high frequency applications. The 1740 provides protection against surges on 75 ohm coax subscriber drops and has a fail-short mechanism in the event of dangerous power-crosses.
The protector will pass bi-directional signals over the bandwidth from DC to in excess of 1 Ghz. Its cast metal housing and environmentally sealed design will withstand the toughest Outside Plant Applications.

 

Benefits

  • Protects Subscribers, Personnel and Equipment from Destructive Power Crosses and Lightning Surges
  • Compact Size Fits Subscriber Network Interface Devices
  • Reduces Frequency of Service Calls
  • Increases Reliability of Network Operation
  • Reduces Cost of Network Maintenance
  • Protector Can Be Stacked in Network Interface Device for Multiple Coax Applications
  • UL Listed
  • 1 Year Warranty.

    •  

    Specifications:
    Connectors, Input & Output F-Type (female)
    Characteristic Impedance 75 ohm
    Min. band width/frequency characteristics DC to 1.0 GHz DC to 1.25 GHz
    Transmission/Insertion Loss (Max.) 0.15 dB 0.45 dB
    Return Loss (Max.) 20 dB 13 dB
    VSWR (Max.) 1:1.22 1:1.57
    Min. fail-short, power cross and sustained 60 Hz current capability
    1000 Vrms Open-circuit Voltage, 25°C
    30 Arms Line to Ground 15 minutes
    60 Arms Line to Ground 5 seconds
    120 Arms Line to Ground 5 seconds
    350 Arms Line to Ground 200 mseconds
    Capacitance 1 MHz, 1 Vrms, 0 Vdc <10pF
    Insulation resistance 100 V / (50 V, 1740-09) >10 9 ohm
    Operating temperature -40°C to 65°C (-40°F to 149°F)
    Storage temperature -55°C to 85°C (-67°F to 185°F)


     

    Surge Protection Characteristics Impulse Reset
    Service Life, Lightning Service Life, AC, 60 Hz
    Model
    No.    		 DC
    Breakdown
    @ 100V/Sec
    (Volts)    		 Typical
    Impulse
    Breakdown
    @ 100V/ms
    (Volts)    		 100 A
    10/1000 µs
    (Opera-
    tions)    		 5 kA
    8/20 µs
    (Opera-
    tions)    		 20 kA
    8/20 µs
    (Opera-
    tions)    		 5A,
    1000 Vac
    1 sec
    (Opera-
    tions)    		 10 A,
    1000 Vac
    1 sec
    (Opera-
    tions)    		 70 Vdc
    @ 2,5 A
    140 Vdc @
    1.1 A
    (Millisec)    		 52.5 Vdc
    @ 260 mA
    135 Vdc @
    200 mA
    (Millisec)
    1740-15 150 ± 20% 350 >1000 >10 >1 20 10   <150
    1740-23 230 ±20% 450 >1000 >10 >1 20 10   <150
    1740-35 350 ±20% 650 >1000 >10 >1 20 10   <150
    1740-30-HR 300 ±15% 650 >300 >10 >1 10 5 <150  
    1740-35-HR 350 ±15% 650 >300 >10 >1 10 5 <150