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MV Overhead 3VT 800A 17.5kV Pole Mounted Metering Box

MV Overhead 3VT 800A 17.5kV Pole Mounted Metering Box

  • MV Overhead 3VT 800A 17.5kV Pole Mounted Metering Box
MV Overhead 3VT 800A 17.5kV Pole Mounted Metering Box
Product Details:
Place of Origin: China
Brand Name: Chuangyin
Certification: KEMA/type test report
Model Number: JLSZXW3-17.
Payment & Shipping Terms:
Minimum Order Quantity: 1 pc
Price: Negotiable
Packaging Details: Polywood
Delivery Time: 5-10 workdays
Payment Terms: L/C, T/T
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Detailed Product Description
Highest Voltage For Equipment Um (r.m.s.): 17.5kV Rated Frequency: 50, 60 Or 50/60
Number Of CTs And VTs: 3VT+3CT Rated Primary Current: 5A Up To 800A
Rated Secondary Current: 5Aor1A Standard: IEC 61869-1:2007、 IEC 61869-2:2012 IEC 61869-3:2011、IEC 61869-4:2013 IEEE (ANSI) C57.12-2016
High Light:

17.5kV Pole Mounted Metering Box


800A Pole Mounted Metering Box


3VT Single Phase Metering Transformer

OMB-17.5 (JLSZXW3-17.5)

Overhead Pole Mounted Primary Metering Unit


This type of metering box is an outdoor dry-type three-phase primary metering unit. The medium-voltage metering transformer is assembled by 3 single-phase combined transformers. Each single-phase combined transformer contains 1 set of CT coil and 1 set of VT coil, Cyclic epoxy resin (CEP) vacuum casting solid encapsulation, with excellent insulation performance and hydrophobicity, the surface is resistant to acid and alkali corrosion, contamination, and UV. It is suitable for outdoor overhead line installation and connection to public power systems. The metering box has connected the secondary lead of the transformer to the junction box of the centralized terminal. The sealing design of the junction box has an output port to connect with the meter box, which is quick to install. It is suitable for the equipment in the urban and rural power distribution network with the maximal voltage not more than 17.5kV for electric energy metering, current and voltage measurement.


1.General parameters:

No. item units specification

Highest voltage for
equipment Um (r.m.s.)


kV 17.5
2 Rated frequency (fR) Hz 50, 60 or 50/60

Rated lightning impulse
withstand voltage (peak)


kV 95 kV,110 kV

Rated power-frequency
withstand voltage on primary


kV 38

Rated power-frequency
withstand voltage on secondary


kV 3
6 Number of CTs and VTs pcs 3VT+3CT
7 Standard /

IEC 61869-1:2007, IEC 61869-2:2012

IEC 61869-3:2011,IEC 61869-4:2013

IEEE (ANSI) C57.12-2016


2.Function and application:

Overhead pole mounted primary metering unit complies with the latest applicable industrial standards and local and or national electrical code (such as IEC, IEEE (ANSI), CAN, GOST, CEF). It is used for three-phase overhead power grid energy measurement management and distribution network automation management system, the primary side measurement is more accurate, and the power loss of the line can be effectively measured so as to reduce losses.


3.Main features


3.1The medium voltage transformer of the metering unit is composed of 3 single-phase combined transformers, which saves installation space and can be installed directly on the pole outdoors, which is convenient and quick;
3.2The metering unit is equipped with a meter box and connected to the transformer interface. The box reserves the space for electric meters and communication modules installation, and is equipped with meter box door switches, proximity sensors, data debugging ports, conversion switches, and door lock seal structure is with anti-electricity stealing design;
3.3The meter box body is made of corrosion-resistant alloy aluminum or hot-dip galvanized low-carbon steel, and the sealing design is weatherproof, acid and alkali corrosion resistant, and UV resistant;
3.4The medium voltage combined transformer is insulated with epoxy resin solid encapsulation, the surface is dirt-resistant, UV-resistant, has excellent dielectric and mechanical performance. It is oil-free, gas-free and maintenance-free, meeting the requirements of safe operation and environmental protection;
3.5The CT of the medium voltage combined transformer can be configured according to double transformation ratios, and the VT is equipped with anti-short circuit and overload protection devices as required to avoid burning and explosion caused by VT short circuit and overload.
3.6The primary connection adopts copper contact bar and terminal clamp and can be equipped with terminal connectors with corresponding area as per user’s requirement. Lightning arrester can be selected as required


JLSZXW3-17.5 CNAS reporte (2).pdf


JLSZXW3-17.5 KEMA reporte (1).PDF


4.Technical parameters.

Current transformer specifications


No Item Specification
Rated primary current 5A up to 800A
Rated secondary current 5A or1 A
Rated Continuous Thermal Current 120%,125%,150%,200%,etc.

Rated Short time current (Ith)

(thermal 1 second)

Rated Dynamic Current (Idyn) 2.5xIth
Rated Output(VA) 5,10,12.5,15,20
Accuracy Class 0.2S,0.2,0.5S,0.5,1 Metering
Instrument Security Factor (FS) 5,10,20
Applicable Standard IEC: 61869-1&2

Voltage transformer specifications


No Item Specification
Rated primary voltage(V) 13200/√3,13800/√3, 15000/√3,7200,8400
Rated secondary voltage(V) 100/√3,110/√3, 115/√3, 120/√3, 110,115,120
Rated Voltage Factor




Standard connection Y-Y connection
Rated Output(VA) 15,20,25,30,50,75
Accuracy Class 0.2,0.5,1,3 Metering
Thermal burden(VA) 500
Applicable Standard IEC: 61869-1&3

If the parameter requested exceeds the range of the above table, it can be determined after negotiation with our company.



5.Dimensions and wiring schematic diagram.


MV Overhead 3VT 800A 17.5kV Pole Mounted Metering Box 0


MV Overhead 3VT 800A 17.5kV Pole Mounted Metering Box 1


6.Special instructions.
The company can design and manufacture specially according to the special requirements of customers.


Contact Details
Shenzhen Chuangyin Co., Ltd.

Contact Person: Mr. Dieky Lin

Tel: +86 138 2379 0397

Fax: 86-0755-8600-0614

Send your inquiry directly to us (0 / 3000)

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