Z2-Xbj2 Smart/Compact Box Substation Oil Transformer Power Distribution Cabinet

 

XB22 itelligent/XBJ2 compact box-type substation of24kV (20kV) (hereinater rferred 10 as box-typesubstation) uakes the advantages of freign box lype satis, cmploysthe new techniques, advanced letric parts and HV/LV automated technology, it meets the requirements of the state grid automation and lettc power requirements. I is formned a box or several boxes that are ssmbled with HV switchgear, distribution trunsformer. LV swithgear, eetrie enery metering equipment and power compensution equipment. The itelligent module is installed on its HV and LV side, to reach the requirements of auomaion in the distributiongrid and realize the remote control, remote sensing. remote signaling and remote regulating as well as upper co-mputer system management.This equipment is apicabole forthe locations such 8s the urban high-rise buildings, residential houses, in dustrial and mining enterprises, municipal constructions,roads and street lamps as well as the temporary constructions.It has many advantages such as the strong completeness short installation period, small foor area, low investment, less main-tenance, reliabl operation, nice appearance, long srvice life, in ddiino, it is easy to harmonize with the surroundings.
 

 

Rated voltage(Ur): af HV side: 24kV af LV side: 0.4kV 

Auxiliary circuit: AC110V, 220V, 380V;and DC 24V
Rated capacity of transformer: 100, 125, 160, 200, 250, 315, 400, 500, 630,
800, 1,000, 1,250, 1 ,600kVA 
Rated current (Ir):af HV side: 400A and 630A af LV side: Max 2,500A
Rated frequency (fr): 50Hz
Rated short-time withstand current (Ik):
HV switchgear: 1 6kA 2s(4s), 20kA 2s(4s)
LV switchgear: 15kA for 315~500kVA 30kA for 630~1 ,600kVA
Testti me: 1s
If the capacity of transformer is LOWER than 315kVA, .
the equipment will be exempted from the test.
protection of enclosure : Not lower than IP23D

Normal service conditions of outdoor box-type substation 
a) The ambient temperature shall not exceed +40°C , and the average temperature within 24h shall not be higher than35 C.The(lowest)ambient tempera ture shoule be- 10C-25C. What;s .more, the sharp change of temperature shall be taken into consideration.
b)The sunshine radiation of 1,000W/m2 (At noon onacloudless day) shall be taken into consideration.
c) The altitude≤1 ,000m.
d) If the ambient air is subject to the pollution of dust, smoke, corrosive gas, steam or salt mist,the pollution class shall not exceed the class III.
e) For class 1, the ice coating thickness shall not exceed 1mm; for class 10, it shall not be thicker than 10mm; and for class 20; it shall not be more than 20mm.
f) The wind speed shall not exceed 34m/s.
g) The condensation and precipitation shall be taken into considerration
h) The inductive electromagnetic disturbance voltage range shall not be higher than 1.6kV in the sec ondary system.

Special service conditions 
Nole: Please negotiate with us ifyour product is used beyond the range of above conditions.

1. This design considers the trritry, environment and variety of customer demands, it employs the modular structure combined with following types.
According to the HV switch connecting with the power grid: ring net type, terminal type, HV energy metering type, LV energy metering type.
According to the type of built-in transformer: oil- immersed full- seal transformer and dry- type transformer. 
According to the type of HV switch: vacuum ty pe load switch and combination unit switch gear, SF6 load switch and combination unit switch, gas-filled switchgear
According to the material of box body (enclosure) : metallic enclosure and non- metallic enclosure
The metallice enclosure and frame are welded with the beam channel and steel I beam, the side wall and top cover is of two-layer assembly, the outer has the hoisting pin and mounting
which facilitate the installation and repair of the transformer; and safe and isolating net doors to prevent person entering into electrical isolating area by mistake and guarantee the safe
which facilitate the installation and repair of the transformer; and safe and isolating net doors to prevent person entering into electrical isolating area by mistake and guarantee the safe
ty of equipment and human.
2. Good ventilation measures: the structure of box body is of two layers, the top of box is else made of heat - isolation material, which can lower the rise of indoor temperature caused
by the sunshine and there is an automatic ventilator mounted at the side door of HV chamber, which can ensure transformer run safely in full load in the high temperature season.
3. The HV switchgear af HV side provided with five -prevention measures and there is an energized reliable lock with the transformer compartment to ensure the human security.
can reach IP23D; It has good rain-proof performance.
4. Convenient operation and maintenance
There are some visible marks outside of the box type substation , indicating the HV compartment, through opening the compartment doors, they can be easily operated and repaired,
each compartment has the automatic lighting device even the compartment of transformer is used for installing . maintaining and changing the transformer in addition LV compartm
ent is of force connection and for repairing the channels.
5. Nice appearance and durability
The enclosure is made of AL-plates and color steel sandwich plates, it is given the pre- treatment and plating treatment , besides, it also can be non-metallic enclosure made of a glass
fiber and special cement and with the special technology so it has the obvious advantage like the strong plasticity of appearance, corrosion resistance, heat isolation and sound isolat
fiber and special cement and with the special technology so it has the obvious advantage like the strong plasticity of appearance, corrosion resistance, heat isolation and sound isolat

Key features and innovations
XBZ2 itelligent/XBJ2 compact box-type substation of 24kV(20kV) has the following innovative points and advantages:
1) There are ielliget modules istalledl at HV and LV circuits, they can pass the operation iformation and control signal to the upper machinevia the field bus or itelligent controller, to realize the remote control, remote sensing, remote signaling, remote regulating and system management. It covers the serious shortage of domestic similar products in the itelligent control. The wire-less MODEM employs GPRS mode to connect with the user's mobile phone, so that user can monitor the operationsituation of box-type substation anywhere, anytime.
2) It uses the solid-encapsulated insulating switch, which has the features such as the high rlibility,t zero discharge, zero pllution, free maintenance, small volume and light weight, etec, besides,this switch is more environmental protection and safe.
3) The innovation point rests with that the Cu-Al composite bus is used as the crrying- current conductor in the substation, which can lower the consumption ofChinese limited copper resource to the large extent.
4) It is designed with the assembled structure, with the features of strong completeness, high production fficiency, short installation period and low transportation cost.
5) It uses the nitrogen spring instead of the traditinal windproof hook, can solve such problem that the traditinal windproof hook easily comes off; and this spring is very nice and takes the con-venience for the operation.
6) XBJ2 compact box-type substation of 24KV, through the structure optimization ofthe high volage components like theHV load switch fuse, presents the perfect combination unit that is placed into the oil tank of transformer and immersed in the oil. LV switchgear is minimized to reduce the volume of combined substation, so its floor space is only 1/3~ 1/5 that of usual products. The box body ofransformer candisperse the heat naturally ifit isexposedin the air, therefore, it has the good operation conditions. What's more, it possesses the outstanding advantages like the high mechanical strength, low loss, low noise, low temperature rise, strong overload capacity, etc., its structure presents the type of Chinese character
7) One invention patent and eight utility model patents have been applied for XBZ2 intelligent/XBJ2 compact box-type substation of24kV (20kV )Vin many innovativepoints like the control principle, structure and new type of parts, etc.. and they have been accepted.

Hv-side main circuit scheme
Typical system schem