Introduction & Benefits Pomanique’s ZX-Series three-phase, electronically controlled, vacuum- interrupting distribution automation switch provides reliable, economical switching, sectionalizing, advanced metering, and automation systems for distribution circuits rated up to 38 kV. Long life and low maintenance Magneticactuatorsandsuperiordesignallowpomanique’s recloserstooperateforarated10,000fullloadoperations. Lessmovingparts=lessmaintenancefor25years. High reliability The ZX switch combines solid cycloaliphatic- epoxy vacuum interrupters with a reliable, lightweight operating mechanism that...

Switch unit description Recloser principle Reclosersareusedinoverheadlinesandinsubstations.Likecircuit-breakers theyarecapableofswitchingnormalandfaultcurrents.Theyareequipped withsensorsandcontrollerbeingtheprotectionandcontroldevice.Incase of a temporary line fault, they can trip and reclose up to four times, thus avoidinglongernetworkinterruptions. Recloser cycle Incaseofanetworkfault,therecloseropensandreclosesseveraltimes.In case of temporary faults, the automatic reclosing significantly reduces the outage times. While the trip settings for each operation can be set individually. Design...

Controller description TheMicroprocessorBasedcontrollerprovideprotection,control,monitoring, instrumentation and metering with integrated input and output logic, data logging&faultreports. Communication access to controller functionality is via electrical RS485 port for remote connection. Additional rear port options including RS232 port is available. Thecontrollerismountedinthecontrolcubicle.Alongwiththecontroller,this cubicle also contains the auxiliary power supply with batteries for uninterruptiblepowersupply,electronicboardsandcircuitbreakers. The controller contains a large number of protection...

General Protection Features Operating sequence Sensitive Earth Fault (SEF) PickupI0:0.1~20A(step:0.1A) Reclose times are selectable. The operating sequence is V0:10~80%(step:1%) definedby: OperatingAngle:0~345°(1°step) O-1strt-CO-2ndrt-CO-3rdrt–CO OpeartingTime:0.1~30sec(step:0.1sec) Reclose times Phase,Ground,SEFInrushBlock:1(yes)/0(no) Phase & Ground Fault PickupLevel:10~2000A(step:1A) Open Line (Loss of Phase) Detection VoltageOnLevel:50~90%(step:5%)ofratedvoltage VoltageOffLevel:35~75%(step:5%)ofratedvoltage DelayTime:0.1~30.0sec(step:0.1sec) Synchronism Check Negative Sequence Overcurrent(Broken...

General Protection Features Commmunication Interface Recording Events On FRTU left-side (inside the inner door) Fault Waveform Load Profiling Baud Rate Local / Remote : Control Position (only locally changeable) Open/Close : Switch Body Status Change Command DO (Direct Operate) and SBO (Select Before Operate) On FRTU Front Panel Reset : Annunciator Manual Reset Command Battery Test : Battery & Charger Circuit Check Protection Function Blocking User Configurable DO Points (reserved) : 2 ProtocolMonitor(CommunicationFrameCheck) Real-timeDisplay:MeasurementandStatusData EventListandFaultOscillograph...

Max. interrupting time / max. closing time Cable charging current Line charging current Minimum clearance, phase-to-earth Clearance, phase-to-phase Creepage distance, phase-to-earth Impedance μΩ between connections Rated lightning impulse withstand voltage Up kV Rated short-duration P.F. withstand voltage Rated short-circuit making current Ima kA Rated duration of short-circuit Rated continuous current Rated short-circuit breaking current Technical data

Pole mount Substation mount F.14, Building 3, Headquarter Economic Park, No. 6688 Xuyang Rd., Yueqing, Zhejiang, China