|
[China]
Trade Verify
Address: 1st Floor, B Block, Jiada R&D Building, Nanshan, Shenzhen, China
Contact name:Dieky Lin
Shenzhen Chuangyin Co., Ltd. |
|
Verified Suppliers
|
|
|
1. Product introduction:
1.1 Product type name and model: Install the metering box OMY-12,
JLSZYW-12 type combined transformer on the 12kV medium voltage
overhead column
1.2 Product overview:
This type of metering box is an outdoor dry three-phase primary
metering unit. The medium voltage metering combination transformer
is an epoxy resin cast integrated solid package. It is composed of
3 current transformers and 3 voltage transformers to form a
three-phase YY connection, medium voltage The metering combination
transformer is vacuum cast with cycloaliphatic epoxy resin (CEP).
It has excellent insulation properties 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 can be
equipped with a metering meter box. All the secondary leads of the
transformer can be connected and collected in the meter box. It is
also equipped with a test terminal block and a meter installation
space. The meter can be configured according to the requirements or
the user can configure the meter. Just plug in, and it is suitable
for electrical energy metering, current and voltage measurement in
urban and rural power distribution network lines with a maximum
voltage of 12kV and below.
1.3 Basic parameters:
| No. | item | units | specification |
| Highest voltage for equipment Um (r.m.s.) | kV | 12 | |
| rated frequency (fR) | Hz | 50, 60 or 50/60 | |
| Rated lightning impulse withstand voltage (peak) | kV | 75 kV,95 kV | |
| Rated power-frequency withstand voltage on primary | kV | 28 | |
| Rated power-frequency withstand voltage on secondary | kV | 3 | |
| Number of CTs and VTs | pcs | 3VT+3CT or 3VT+2CT | |
| Standard | / | IEC 61869-1:2007, IEC 61869-2:2012 IEC 61869-3:2011,IEC 61869-4:2013 |
2. Product function and use:
The Overhead pole mounted primary metering unit complies with the
latest applicable industry standards and local and/or national
electrical regulations. 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 to reduce losses.
3. Main features of the product:
1. The integrated solid package of the medium voltage combined
transformer of the metering unit has a compact and beautiful
design, eliminating the need for multiple single transformer
combined installation and ring connection, and can be installed
directly on the pole outdoors, which is convenient and quick;
2. The metering unit can be equipped with a meter box as required
and connected to the transformer connection. The meter is installed
in the box, and the meter box door switch sensor alarm signal is
reserved. The door lock seal structure is designed to prevent
electricity theft;
3. The meter box body is made of corrosion-resistant stainless
steel or low-carbon steel of the same performance, and the sealing
design is weather-proof, and the surface is coated with an
anti-corrosion paint powder layer, which is resistant to acid and
alkali corrosion and UV;
4. The medium voltage combination transformer is insulated with
epoxy resin solid encapsulation, and the surface is dirt-resistant,
UV resistant, and has excellent dielectric and mechanical
properties. Compared with the dispersed single-phase combination
transformer, its size is more compact, oil-free, gas-free
Maintenance to meet the requirements of safe operation and
environmental protection;
5. The CT of the medium voltage combined transformer can be
configured with double transformation ratios, and it is convenient
to set the changeover switch. The VT is equipped with anti-short
circuit and overload protection design to avoid burning and
explosion caused by VT short circuit and overload.
6. The primary connection adopts the contact bar and the terminal
clamp connection. The terminal block of the corresponding area can
be configured according to the user's requirements, the lightning
arrester mounting bracket is reserved, and the lightning arrester
can be configured at the primary end as required.
4. Product technical parameters:
Current transformer specifications
| No | Item | Specifications |
| Rated primary current | 5A up to 1200A | |
| Rated secondary current | 5A or 1A | |
| Rated Continuous Thermal Current | 120%,125%,150%,etc. | |
| Rated Short time current (Ith) (thermal 1 second) | 80xIpr,100xIpr | |
| 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 | |
| Applicable Standard | IEC: 61869-1&2 |
| No | Item | Specifications |
| Rated primary voltage(V) | 10000/√3,11000/√3 | |
| Rated secondary voltage(V) | 100/√3,110/√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 | |
| 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) | 200 | |
| Applicable Standard | IEC: 61869-1&3 |
If the parameters required by the user exceed the range of the above table, it can be determined after consultation with our company.
5. Product dimensions and wiring schematic diagram:
Dimensions
Wiring schematic diagram
6.Special instructions
The company can design and manufacture specially according to the
special requirements of customers.
