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MODEL 23-5 Radar Coupling/Booster Unit

Picture of Model 23-5 Coupler/booster

The one-piece unit is connected in series between the output of an impulse fault locating system such as the VON Model BI-.35 or Modular Model C and the faulted cable. The coupler (filter) utilizes the arc reflection method. A digital memory radar or real time radar connected to it displays the entire faulted cable including the ends, splices, and any connected transformers. The location of the fault is determined by the down blip which shows on the radar screen with each impulse. Picture of Model 23-5 Coupler/booster mounted on platform with BI-.35

WEIGHT - 120 lbs (54.6kg)

WIDTH - 18.0"(45.7cm) over handles

DEPTH - 15.75" (40.0cm) HEIGHT - 21.0" (53.3cm)

The tan fiberglass cased unit contains the following:

1. A high voltage inductor to extend the length of the "thump" from an impulse fault locator so that the low resistance caused by the arc at the fault can be viewed with the radar. It also serves as a wave trap so the radar does not see the internal low resistance of the thumper.

2. A high voltage and high frequency coupling (filter) system fully protected against high voltage spikes. Any real time radar which is connected through the BNC connector is electrically separated from the faulted cable so it remains at ground potential. Picture of Model 23-5 Coupler/booster mounted on two wheel cart with BI-.35

3. A 10 foot HV input cable or HV input studs inside the enclosure for connection to any impulse fault locator HV output cable. The 10 foot input cable can be provided with a male connector to fit either the BI-.35 or BI-.35S1 or it can also be provided with terminals to fit the impulse control gap and impulse service capacitor used with VON modular units.

4. A fixed 60 foot long high voltage output lead is normally provided. Longer leads are available. It can replaced with a short lead with HV connector designed to fit the VON HV reel system.

5. The push-pull bypass switch shorts out the inductor so that the normal impulse from the thumper is put on the faulted cable to make a "thump" sound at the fault.

6. A 5 mfd 15 kv impulse service capacitor, 0-15 kv impulse control gap, and a push-pull switch which bypass the capacitor bank and discharges it to ground. A 10 mfd 15 kv impulse service capacitor bank is available as a Model 23-10. The bypass switch allows the faulted cable to be impulsed between 15 kv and 30 kv when required for locating splice and termination faults.
The VON Corporation, P.O. Box 110096, 1038 Lomb Avenue SW Birmingham, AL 35211 (205)788-2437