ZSP Station Class Polymer Arresters

Design:

• The design consists of a number of metal oxide valve elements contained within a fiberglass winding and then inserted into the polymer housing.
• ZSP arresters are shippped as single units for all ratings: 3kV through 198kV.
• There is no need to combine sections, even for the 198kV duty cycle rating.
• The metal oxide valve elements combine excellent protective characteristics with steady state performance to maximize protection over many years of service.

Performance:

• ZSP are available in duty cycle ratings of 3kV through 198kV (2.55kV through 158kV MCOV) and are designed for system line-line voltages of 2.4 through 230kV.
• The arrester designs are tested in accordance with the latest industry standards for metal oxide arresters.
• The "ZSP" arresters consistently withstand the following minimum design tests.
• High Current-Short Duration: 100kA crest
• Transmission Line Discharge: Exceeds ANSI/IEEE and IEC class 2 standard requirements
• Nominal discharge current per IEC: 10kA
• Line Discharge Class per IEC: Class 2 Minumum
• Energy Capability: 6.1kJ/kV
• MCOVFault Withstand Capability: 80kA rms sym
• Working cantilever strength:10,000 in. -lbs.REA Listed

Fault Current Withstand:

• • The severity of a failure depends on the duration and magnitude of the available fault current conducting through the arrester at the time of the failure.
  • This type of arrester, with its polymer housing, eliminates the potential danger of porcelain fragmentation.
  • The design uses a fiberglass epoxy wrap to relieve the pressure that is present during a failure.

Three Phase Installation Layout:

• • The holes for mounting are .56 inches (14.2 mm) for 1/2" bolts.The tripod base has three holes with a 10" bolt circle at 120.
  • Mounting bolts and washers are not furnished with the arrester.

Name plates:

• • In addition to the information that is included on the tripod base, a name plate is attached to the casting to provide all of the required arrester details.
  • The catalog number, the rated voltage, the maximum continuous operating voltage, and the pressure relief current rating are shown.
  • The serial number includes information about the time of manufacture.