OMB-17.5
(JLSZXW3-17.5)
1.General parameters:
|
No.
|
Item
|
Units
|
Specification
|
|
1
|
Highest voltage for
equipment Um (r.m.s.)
|
kV
|
17.5
|
|
2
|
rated frequency (fR)
|
Hz
|
50, 60 or 50/60
|
|
3
|
Rated lightning impulse
withstand
voltage (peak)
|
kV
|
95 kV，110 kV
|
|
4
|
Rated power-frequency
withstand
voltage on primary
|
kV
|
38
|
|
5
|
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
4.Technical parameters
Current transformer
specifications
|
No
|
Item
|
Specification
|
|
1.
|
Rated primary current
|
5A up to 800A
|
|
2.
|
Rated secondary
current
|
5A or1 A
|
|
3.
|
Rated
Continuous Thermal Current
|
120%,125%,150%,200%,etc.
|
|
4.
|
Rated
Short time current (Ith)
(thermal
1 second)
|
80xIpr,100xIpr
|
|
5.
|
Rated
Dynamic Current (Idyn)
|
2.5xIth
|
|
6.
|
Rated
Output(VA)
|
5,10,12.5,15,20
|
|
7.
|
Accuracy
Class
|
0.2S,0.2,0.5S,0.5,1
Metering
|
|
8.
|
Instrument
Security Factor (FS)
|
5,10,20
|
|
9.
|
Applicable
Standard
|
IEC: 61869-1&2
|
Voltage transformer
specifications
|
No
|
Item
|
Specification
|
|
1.
|
Rated primary voltage（V)
|
13200/√3，13800/√3, 15000/√3,7200,8400
|
|
2.
|
Rated secondary
voltage(V)
|
100/√3，110/√3, 115/√3, 120/√3, 110,115,120
|
|
3.
|
Rated
Voltage Factor
|
1.2/Continuous
1.5/30s,1.9/30s,1.9/8h
1.5/30s，1.9/30s，1.9/8h
|
|
4.
|
Standard
connection
|
Y-Y connection
|
|
5.
|
Rated
Output(VA)
|
15,20,25,30,50,75
|
|
6.
|
Accuracy
Class
|
0.2,0.5,1,3
Metering
|
|
7.
|
Thermal burden(VA)
|
500
|
|
8.
|
Applicable
Standard
|
IEC: 61869-1&3
|
For required
specifications that are out of the range above, please contact our company for
further solution.
5.Dimensions and wiring schematic diagram
6. Special instructions
The
company can design and manufacture product as per customized requirements by
the customer.
Shenzhen Chuangyin Co., Ltd.---- a national high-tech enterprise. 
Chuangyin Activities 
Smart Distribution Solution 
welcome to join us 
Welcome to call the hotline : 0755-86000713 
