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Feeder protection
Automatic Vacuum Circuit Recloser
15-38 kV outdoor vacuum recloser for overhead feeder protection, automatic reclosing, fault isolation and distribution automation projects. The recloser body fixes the interrupting duty; the controller layer fixes protection, communication and reclosing behavior.
15-38 kVXIYA ACR guide covers DVZ15, DVZ27 and DVZ38 classes.
630 / 800 ARated continuous current options in the public DVZ table.
12.5 / 16 kAShort-circuit breaking current options in the XIYA product guide.
Specification
Start with the voltage class and interrupting duty.
The XIYA ACR guide lists DVZ15, DVZ27 and DVZ38 classes. Use the voltage class, rated current and short-circuit breaking current as the first selection layer, then confirm the controller and communication package.
DVZ15 rating table
15.5 kV feeder recloser class.
This class fits lower medium-voltage overhead feeder and branch protection projects where the ACR must interrupt fault current and support automatic reclosing.
Parameter
15.5 kV data
Models
DVZ15-630-12-N, DVZ15-800-12-N, DVZ15-630-16-N, DVZ15-800-16-N
Rated continuous current
630 A / 800 A
Rated short-circuit breaking current
12.5 kA / 16 kA
Rated short-circuit making current
31.5 kA peak / 40 kA peak
BIL / P.F. withstand
110 kV peak / 50 kV
Creepage and clearances
960 mm creepage; 320 mm phase-phase; 270 mm phase-earth
Weight and charging current
130 kg; line 2 A; cable 10 A
Interrupting / closing time
40 / 60 ms
DVZ27 rating table
27 kV class with normal and higher insulation options.
The 27 kV table includes N models and H models. The H route raises BIL, P.F. withstand, creepage, phase-earth clearance and weight.
Parameter
27 kV data
N models
DVZ27-630/800-12-N and DVZ27-630/800-16-N
H models
DVZ27-630-16-H and DVZ27-800-16-H
Rated continuous current
630 A / 800 A
Rated short-circuit breaking current
12.5 kA / 16 kA
BIL / P.F. withstand
N: 125 kV peak / 60 kV; H: 170 kV peak / 70 kV
Creepage and clearances
N: 960 mm creepage, 270 mm phase-earth; H: 1290 mm creepage, 350 mm phase-earth
Weight and charging current
N: 140 kg; H: 155 kg; line 5 A; cable 25 A
Interrupting / closing time
40 / 60 ms
DVZ38 rating table
38 kV distribution feeder class.
The 38 kV class uses the higher insulation group in the XIYA table and is the top voltage class in the extracted product guide.
Parameter
38 kV data
Models
DVZ38-630/800-12-N and DVZ38-630/800-16-N
Rated continuous current
630 A / 800 A
Rated short-circuit breaking current
12.5 kA / 16 kA
Rated short-circuit making current
31.5 kA peak / 40 kA peak
BIL / P.F. withstand
170 kV peak / 70 kV
Creepage and clearances
1290 mm creepage; 320 mm phase-phase; 350 mm phase-earth
Weight and charging current
155 kg; line 5 A; cable 40 A
Interrupting / closing time
40 / 60 ms
Selection sequence
Confirm voltage class, current and breaking duty first. Then choose insulation group, CT or voltage sensing, mounting bracket, controller cabinet, communication protocol and destination standard.
The recloser body is the primary device; the controller is the operating layer.
The body interrupts fault current with vacuum interrupters. The controller layer decides protection curves, reclosing attempts, records and communication, so the two layers must be confirmed separately.
Three vacuum interruptersSingle magnetic actuatorEpoxy resin housingPowder-coated tankOpen / close pointerHot-stick trip ring
Interruption layer
Vacuum interrupters and the actuator handle trip and close action for the three-phase feeder point.
Insulation layer
Hydrophobic epoxy resin housings, creepage distance and phase clearances are selected by voltage class.
Sensing layer
CT and voltage sensing options feed phase current, phase voltage and low-voltage supply values to the controller.
Manual interface
The visible red/green pointer and yellow hot-stick ring support field operation and state confirmation.
Controls
Confirm the protection and communication package after the body rating is fixed.
On this ACR page, the controller is a required protection layer rather than a loose add-on. It turns the vacuum switching body into an automatic recloser with fault detection, reclosing, lockout and distribution automation communication.
Protection logic
Controller documentation lists instantaneous over-current, time over-current, negative sequence, directional over-current, over-voltage, under-voltage, EF/SEF, cold load pickup and hot line tag.
Reclosing behavior
Set reclosing times, dead time and curve behavior before quotation. The training material shows 1-4 reclose attempts and adjustable intervals in the software layer.
Communication
Controller documents list RS-232, RS-485, DNP3.0, Modbus, IEC 60870-5-101 and IEC 60870-5-104. The training file also references optional IEC61850, MQTT and multi-port configurations.
Records and software
The ZW32 material lists SOE, fault record and normal operation record. Training slides show data viewing, parameter setting, forwarding settings and transmission test pages.
Controller cabinet body
Use this cabinet layer for protection settings, trip and close command, event records, measurement data and communication interface. The cabinet is selected after the recloser body rating, CT or voltage sensing and utility protocol requirement are fixed.
Recloser control panel
Confirm protection groups, local operation, hot-line tag, lockout behavior, metering, event and counter functions before production. DNP3.0, Modbus and IEC101/104 should be treated as project configuration items, not assumed by default.
Applications
Trips and recloses at the feeder protection point, then locks out a persistent downstream fault.
The topology separates the power path, CT/voltage sensing, trip-close control and DA/SCADA communication. The fault marker belongs downstream of the ACR, because the recloser protects the selected feeder or branch point rather than representing a whole-network outage.
Feeder recloser topologyPower path + CT/VS signals + trip-close + DA communication
Feeder sourceUpstream substation or overhead feeder
ACR bodyVacuum interruption at the protection point
Downstream faultTrip, reclose, then lockout if fault remains
Protected loadsLateral, transformer or customer branch
Controller cabinetCT/VS sensing and trip-close command
DA / SCADAEvents, measurements and remote control
Solid line: feeder power path from source through ACR to protected downstream loads.Vertical path: CT/VS sensing plus trip and close command between ACR body and controller.Dashed path: event record, measurements and DA/SCADA communication.
Path
Type
Meaning
Feeder source -> ACR -> downstream branch
Power
The ACR interrupts fault current at the selected feeder or branch protection point.
ACR body -> controller cabinet
Control
CT/voltage sensing and trip-close command define curves, dead time, reclose attempts and lockout.
Controller -> DA/SCADA or local software
Communication
Events, measurements, SOE, fault records and remote control are mapped by protocol settings.
Feeder fault interruption
Use the ACR where the line point needs vacuum interruption of fault current rather than only load switching.
- Overhead feeder protection
- Branch or lateral isolation
- Substation-adjacent outdoor installation
Automatic reclosing
The controller checks protection curves, dead time and reclose attempts. If the fault remains, the device locks out instead of repeatedly energizing the fault.
Distribution automation
SCADA or DA integration depends on communication protocol, I/O, power supply, site signal quality and utility settings.
Documentation
Engineering documents behind the selection.
The selection notes below come from XIYA’s ACR guide and controller documentation. Ratings, protection functions and protocol options are kept in separate groups so buyers can verify the recloser body and controller package before RFQ. The page is reviewed by XIYA POWER sales engineering; for manufacturer background, see About XIYA POWER.
Product guideXIYA ACR 15-38 kV guide
Documents the DVZ15, DVZ27 and DVZ38 rating table, recloser overview and mounting dimensions.
Controller manualZW32 recloser material
Documents protection, communication, pole, mechanism and accessory selection notes.
Training fileACR controller training
Documents HMI pages, software settings, forwarding, records and detailed protection function names.
DVZ15 / DVZ27 / DVZ38 classes
The specification section uses the XIYA product guide table rather than mixing in broader unsupported ratings.
Protection and reclose settings
Protection curves, reclosing times, dead time, event records and protocol options come from controller documentation.
Confirm before production
Mounting bracket, PT supply, surge arrester, terminals, voltage shields and aviation cable should be confirmed before order release.
FAQ
Answer the selection questions before a model-level quote.
What is an automatic vacuum circuit recloser?
It is a pole-mounted outdoor switching and protection device that interrupts feeder faults, recloses according to controller settings and locks out when the fault remains.
How is it different from a load break switch?
A load break switch is mainly for load current switching and sectionalizing. If the project needs fault-current interruption, protection curves and automatic reclosing, compare the ACR route instead of the Pole-Mounted SF6 Load Break Switch (IACT).
How is it different from a smart drop-out fuse?
A Smart Drop-Out Fuse keeps a fuse-point architecture and adds motorized operation or monitoring. A vacuum ACR is a feeder protection device with vacuum interrupters, controller protection logic and reclosing sequences.
How is it different from a cutout single-phase recloser?
The Cutout Single-Phase Recloser is for cutout-mounted single-phase branch points. The ACR page covers three-phase feeder-level vacuum interruption and controller-based distribution automation.
Where does a user boundary switch fit instead?
A User Boundary Switch is selected at customer demarcation points for user-side fault isolation. A feeder ACR is used for broader feeder protection and automatic reclosing.
What should be sent for quotation?
Send voltage class, rated current, breaking current, feeder diagram, fault duty, CT or voltage sensor requirement, controller protocol, SCADA interface, pole installation photo or drawing, quantity and destination standard.
Send the feeder duty before selecting controller settings.
Start with voltage class, rated current, short-circuit duty, feeder role, pole arrangement, CT/voltage sensing, communication protocol and destination standard. Datasheets, wiring drawings, controller settings and inspection documents can be reviewed during quotation. To compare adjacent Smart Grid devices, return to the Smart Grid equipment hub, review the Pole-Mounted SF6 Load Break Switch (IACT), compare User Boundary Switch or check Smart Drop-Out Fuse for fuse-point protection. For manufacturer background, see About XIYA POWER.