This document provides information on a vacuum type ring main unit manufactured by Zhejiang Farady Electric Co., Ltd. The unit operates at voltages between 30/33/40.5kV and 50Hz. It uses a fixed, metal-clad composite structure with IP2X level protection. The main components include the cabinet, busbars, circuit breakers, relays, terminals and connecting bolts. It has technical specifications such as a rated current of 630/1250/1600/2000A and can be used as a ring network power supply or distribution unit.

1. Vacuum type ring main unit
HXGN17 type
30/33/40.5KV
Product brochure
2009/4
Zhejiang Farady Electric Co., Ltd.
ISO9001&ISO14001 certificated enterprise

2. ++++General,
XGN17-40.5 box type fixed AC metal clad switchgear according to
IEC62271-200 design. It can be used in three-phase AC rated frequency 50Hz
single bus and single busbar with bypass system of indoor complete sets of
equipment, as the acceptance and distribution of 35kV electric network with and
has the circuit control, protection and monitoring the function.
++++Service environment
1 ambient air temperature limit: +40 C, lower limit: -10 C, the daily average
temperature of not more than 35;
2 altitude is not more than 1000m;
3 the relative ambient temperature is not more than 95%, the average monthly is
not more than 90%;
4 earthquake intensity is not more than 8;
5 the average value of water vapor pressure is not more than 2.2Kpa, the
monthly average value is no more than 1.8kpa;
6 no fire, explosion hazards, serious pollution, chemical corrosion and violent
place of this building.
Special working conditions
In the case of more than the normal use of the environment under the conditions,
by the user and the manufacturer.
++++Feature
XGN17-40.5 box type fixed AC metal clad switchgear device is fixed arranged
composite structure and its basic skeleton steel and steel plate bending parts by
welding and, the cabinet body shell is IP2X level of protection. Mainly by the
cabinet and the cabinet after assembly and made the switch equipment, uses a
different set corresponding to a functional unit, cabinet between the charged
body were to air main insulation and the charged body between and the relative
between the insulation distance of not less than 300mm. 1) before the cabinet:
before the cabinet set up main busbar and busbar disconnector chamber, a
circuit breaker chamber, relay room, main busbar and busbar disconnector
chamber at the top of the cabinet, the circuit breaker room arranged at the
bottom of the cabinet, the chamber is also provided with a current mutual
inductor, two rooms have insulation plates separated. Through the bus bar
casing connected. Relay settings in the cabinet is the front of the middle, small
bus terminal 15 day, and a second cable channel, terminal room located in the
left door, can install JH10 terminals more than 80, at the bottom of the chamber
is also provided M12 connection bolt for auxiliary circuit connected to use, right
door for dimensional repair channel. The upper part of the terminal chamber is
an operating panel, and can be provided with an auxiliary switch. 2) after the
cabinet: after the cabinet bolts with a cabinet is connected, the cabinet according
to need can be set to bypass bus and isolating switch, an overhead pass in and
out line from the cabinet by, set the bypass bus, overhead line and the reach the
safe height, need to add a small attached or obscuration network. When the

3. mother is not set, the overhead outlet can be passed from the top of the back
cabinet. The cabinet can also be installed with a voltage transformer or a
lightning arrester, and the contact bus and the cable outlet are installed in the
cabinet. The back door bolt is fixed, if the charged display prompt no electricity,
can open the back door, the main bus room and after the cabinet are separated
by a baffle plate
++++ Main technical specifications
No Item Unit Data
1 Rated voltage kV 30/33/40.5
2 Rated current Hz 50/60
3
Rated insulation level lightning impulse voltage kV 185
Power frequency impulse
voltage
kV 95
4 Rated current A 630/1250/16
00/2000
5 Rated thermal stability current KA/4
S
31.5
6
Rated dynamic stability current kA 63
7 Rated short circuit breaking current kA 25
8 Rated short circuit current (KA) kA 63
9 Rated voltage, switch and auxiliary circuit V DC 24, 36,
48,110,220
10 protection class
IP2X
++++structure
HXGN17 series metal clad switchgear usef high voltage vacuum load switch and
fuse combination vacuum load switch for incoming and outgoing protectiot, which
is suitable for the three phase AC 50HZ,uo to 40.5kV power system, or with sets
of power distribution equipment and ring main unit switch cabinet, combined AC
power plants and other supporting the use, widely used in wind power generation,
city network construction and transformation project, industrial and mining
enterprises, high-rise buildings and public facilities can be as a ring network
power supply unit or terminal equipment, power distribution, control and
protection. The technical performance of the product is in line with the
IEC62271-100
The product has the advantages of high breaking capacity, safety and reliability,
long service life, frequent operation, compact structure, small volume, light
weight, no need of maintenance and the like. With breaking rated current,
overload current, short circuit current and prevent defect running of the
equipment, the switch has obvious isolating fracture loading with the closing
capacity ground off and electric spring mechanism, remote remote control
capability

4. ++++Use condition
3.1 ambient air temperature does not exceed 40 degrees, and the
average 24h measured and does not exceed 35 degrees, low ambient air
temperature of -25;
3.2 the effect of sun radiation can be ignored;
3.3 altitude is not more than 1000m;
3.4 ambient air is not significantly contaminated by dust, smoke,
corrosion, corrosion, or flammable gas, steam or salt mist;
3.5 relative humidity, average plant does not exceed 95%; the vapor
pressure of water on average less than 22kPa; lunar humidity on
average no more than 90%;
The average monthly water vapor pressure is not more than 1.8KPa;
3.6 from the switchgear and control equipment of external vibration or
earthquake can be ignored;
3.7 the magnitude of the electromagnetic interference in the two system
is not more than 1.6kV.
++++ Technical parameters
4.1 main technical parameters of combined electric appliance
Technical parameters of vacuum load switch assembly and adjustment
in 4.2 combined electric appliance
4.3 the technical parameters of the assembly and adjustment of the
isolating switch assembled by the combined electric appliance
4.4 the technical parameters of the assembly and adjustment of the
grounding switch of the combined electric appliance
4.5 the technical parameters of fuse fuse
5 structure and working principle
++++ Structure
Combination of electrical appliances for triode linked structure: mainly
composed of a frame, a vacuum interrupter, isolating switch with fuse),
grounding switch and a spring operating mechanism, isolating switch
and vacuum arc arc and earthing switch through the insulator is fixed on
the frame and spring operating moving mechanism is arranged in the
frame on the side panel.
++++ Working Principle
Operation of 5.2.1 vacuum arc extinguishing chamber
Vacuum switchgear destroy the mode of operation of the arc chamber
using electric spring operation mechanism for closing, with tripping
electromagnet of gate, for manual closing. The opening operation,
manual closing operating handle clockwise spring operating mechanism
transmission shaft.
5.2.2 isolation switch, grounding switch, closing operation
A reliable mechanical interlocking device is arranged between the three
electric appliances of the vacuum arc extinguishing chamber, the
isolating switch and the grounding switch, and the isolating switch and
the grounding switch are operated by the same shaft. When the switch
closed, after the vacuum load switch. On the contrary, when the vacuum
load switch is in the state of switch, the switch and the grounding switch
can be operated.
5.2.3 fuse impact release switch
In the closing position of the combined electric and when the short
circuit current and overload current flows in the main circuit, at least one
phase fuse fuse.
Impactor action, brake speed depending on the size of current, current

5. divided brake speed faster, action of mechanical tripping device of the
combined electrical equipment, so that the vacuum arc extinguishing
chamber in a tripping spring achieve fast and reliable brake.

6. ++++Before order pls clarify of your requirement with our tech
Copyright 2014 Farady Electric
Zhejiang Farady Electric Co.,Ltd
TEL:0086-577-61722510/61777258
Fax:0086-577-61777257
Http://www.farady-electric.com
Email:info@farady.cn
Add:Su’ao,Liushi,Yueqing,Zhejiang,P.R.China, 325604