EZ-Restore OVERDRIVE Series
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EZ-Restore OVERDRIVE Series URD Troubleshooting/Sectionalizing Tool ■ Absolute lightest unit on the market at < 48.5 lbs (22 kg) ■ Only unit on the market with: ■ Back-feed alert ■ Safe-grounding interlock ■ USB interface ■ High-brite TFT color LCD ■ Only unit on the market that complies to IEC/EN61010 safety standard ■ 12 kV/A 1,100 J output ■ Maximum ciruit length 25,000 ft (7,620 m) ■ Battery/AC/ext. DC powered ■ Rugged wheeled Pelicase enclosure ■ IP53 open/IP54 closed lid DESCRIPTION The EZ-Restore OVERDRIVE is a lightweight, one person operational, time-saving tool for troubleshooting/sectionalizing URD loops. Based on the ARM® technology, the OVERDRIVE allows identifying a faulted cable segment in between two single phase Y grounded distribution transformers without isolating cable segments by standing them off or pulling bayonet fuses, or the use of fault indicators. The ARM® method has proven to be on average 45 minutes faster to restore power compared to other sectionalizing methods. The EZ-OVERDRIVE has become the tool of choice when the reduction in outage minutes (SAIDI index) becomes the objective. The EZ-OVERDRIVE is the only unit on the market to offer BACKFEED Alert, overcoming the potential safety risk of incorrectly installed home based stand-by generators. Due to its light weight, small dimensions, ruggedness and battery/AC operation, the EZ-OVERDRIVE can be located permanently on a "trouble truck", making it available at all times to the troubleshooting crew on duty without any delay. The graphic user interface typically does not require any user adjustments and is operated via a single rotary control knob. The EZ-OVERDRIVE series offers: ■ Back Feed Alert ■ 1,100J at 12 kV output ■ Optional 12 kV DC Hipot (fault verification) ■ Automatic cable end identification & localization, including determination if "open" or "short" ■ Automatic transformer identification and localization ■ Automatic fault identification and localization ■ Automatic identification of faulted cable segment ■ Live trace to allow faulted segment verification by pulling elbows ■ USB interface for up- and downloading data/programs APPLICATIONS The EZ-Restore OVERDRIVE is specifically designed as a tool to quickly identify a faulted cable segment in a URD loop type circuit with single phase Y grounded transformers. This type of circuit design is very common in subdivisions all over North America. Compared to all other commonly used methods to perform this task, the EZ-OVERDRIVE takes advantage of the combination of the TDR and the ARM® method. This process allows to identify the faulted cable segment without: 1. Leapfrogging from transformer to transformer in order to test isolated cable segments. 2. Going to each transformer and pulling bayonet fuses (removes the grounding point). 3. Going to each transformer and checking fault indicators. 4. Closing in on the circuit using a fuse and checking fault indicator(s). The advantage of using the EZ-OVERDRIVE with its patented sectionalizing technology (US 6, 683,459 B2) is that the faulted cable segment can be identified by connecting the unit, e.g. at the NO point in the faulted (half) loop, and let it analyze the circuit all the way to the open fuse at the riser poll. No transformers need to be opened and no fuses need to be pulled. In addition to the time savings, this method has proven to cause no damage to the faulted circuit any further in contrast to "closing in" on the circuit&nb

EZ-Restore OVERDRIVE Series URD Troubleshooting/Sectionalizing Tool Time Domain TDR Range TDR sampling rate TDR resolution TDR display TDR memory When the faulted cable segment has been identified, typically one of the following two methods is applied to verify/confirm the identified segment before performing any switching and closing the NO point in the loop in order to restore power: 1. Pulling the first elbow past the fault, followed by pulling the elbow in front of the fault. This action will produce 2 "open" signals on the (live) TDR screen, which show the fault between them,...