Center Break Isolator and double Break Isolator
These disconnectors are , no load switching devices
which physically isolate the lines. They are designed for
horizontal outdoor application and can also be designed
for vertical installation. For earthing and closing of
switchyard portions of the installation, the earthing
switches are provided on disconnector. If required.
The following documents were referred to during the preparation of this specification. In case of conflict, the provisions of this specification shall take precedence.
IEC 129:1975: Alternating Current Disconnectors (Isolators) and Earthing Switches
IEC 60694:2002: Common Specifications for High Voltage Switchgear and Controlgear
BS 729: Hot dip galvanized coating on iron and steel articles
IEC62271-102
Isolator (Disconnector) - a mechanical switching device which provides, in the open position, an isolating distance in accordance with Electrical Safety requirements.
SERVICE CONDITIONS
The isolator shall be suitable for continuous operation outdoors in tropical areas at altitudes of up to 2200m above sea level, humidities of up to 90%, average ambient temperature of +30ºC with a minimum of -1ºC and a maximum of +40ºC and heavy saline conditions along the coast.
4.2. DESIGN AND CONSTRUCTION
4.2.1 The Isolator, Solid Link shall be designed and constructed in accordance with IEC 129 and IEC 60694.
4.2.2 The isolating link shall be of the vertical opening, designed for single phase manual operation. It shall be easily removed and replaced by using a portable operating rod.
4.2.3 The isolating link shall incorporate double porcelain insulators to suit voltage requirements and mounted on hot dipped galvanised steel under base suitable for vertical mounting.
4.2.4 The isolating link shall be arranged so that each unit is mounted independently on an angle bracket. It shall be supplied complete with the angle bracket and accessories suitable for mounting on 'U' type steel channel. The drawings to be submitted shall indicate all the applicable mounting positions.
4.2.5 The isolator shall be designed such that in fully open position, it shall provide adequate electrical isolation between the contacts on each phase. It shall conform to the requirement as single point isolation for safety.
4.2.6 All steel parts shall be hot dip galvanized to BS 729. The minimum coating of galvanizing required is 80 microns.
4.2.7 The solid link shall be removable from the mounting by use of operating rod.
4.2.8 All current carrying parts of the isolator shall be made of high conductivity material.
4.2.9 The isolator shall be fitted with clamp connectors for Aluminium (ACSR) conductor of Aluminium (ACSR)conductor of up to 18.2mm diameter.
The rating of the complete isolator shall be as follows: -
Rated voltage
36 kV
Rated frequency
50 Hz
Rated lightning impulse withstand voltage
200 kV
Rated power frequency withstand voltage, dry
95 kV
Rated normal current
400 Amps
Rated short time withstand current for 3 sec, min.
18.0 kA
Minimum creepage distance of insulators
900 mm
Our company is one of factory Of OEIpower, Local in No. 15, Tongbai, Industrial Zone, Nanyang City, Hean Province, China, OEIpower to provide complete solutions for the Energy sector, mainly power generation, transmission and distribution markets. OEIpower is able to lead turn-key projects and also cooperate in specific parts of engineering projects. Regarding products, OEIpower is creating a solid sales and distribution network in order to manage the main components involved in the energy sector and markets.
It is a professional Manufacturing. Meanwhile, it is specialized in power transmission and distribution products such as Insulators, Drop-out Fuse, Fuse link, Load Interrupter Air Switchs, Surge arrester, Outdoor Off-Load Isolator Switch Disconnector switch etc. We have won many orders for World markets, Like South Korea, Spain, Malaysia, Thailand, Yemen, etc.
Our most of the products have passed the type test performed by Electric Power lin Aeeseeory Quality Inspection Center of electric Power industry, such as Xi'an High Voltage Research Insitute. And IST off-load switch type IST-12KV/400A already passed CENTRAL POWER RESEARCH INSTITUTE HIGH-VOLTAGE LABORATORY India. Our 12KV 8KA Drop Out fuse already passed the ASTA testing in the year 2015.
Promise of After-sales Service
To ensure the quality of After-sales Service, We have established the After-sales Service Department, and compiled the process of after-sales service, We require service-man should passion, cordial, patient, careful, considerate and instant for customers. Our general service: After receive telephone, the local service-man direct to the site to solve the problem, to security reasonable interest of the customer. When finishing all the work. Service men must fill the bill of customers' feedback suggestion, and ask the customers' signature. Then deliver it to the After-sales Service Department as feedback information, then to the designing and exploiting department. Special condition: Directly send someone from company to dealing, Our products' guarantee days are two years. Within those days, Quality problems of causing by customers. We'll repair freely, Causing by customers using, operating and keeping un-properly, we'll repair permanently and charge properly. Out of guarantee days, we'll repair with charge (fee of component and repairing).
Main Technical Testing Equipment
No.
Name of checkout equipment
1
86-G Type impulse peak Voltage test equipment
2
MY-4KV Type voltage dependent resistor test equipment
3
MDA-30 Type DC parameter test equipment
4
Metal-oxide surge arrester bleeder current test equipment
5
500KV power frequency withstand voltage test equipment
6
HR-3 Type loop resistance test equipment
7
GKC-6 Type High-voltage switch mechanical properties test equipment
8
5A heavy current test equipment
9
YHN-8 Type auto power frequency withstand voltage console
10
CJV-800 Type impulse with stand voltage test equipment
11
CJI-1 Type impulse with stand current test equipment
12
JF-1 Type complementary Metal-oxide surge arrester instrument for measuring partial discharge
13
XR-2 Type power frequency test equipment
14
MD-1A Type Metal-oxide surge arrester electrification test equipment
15
JZ-800 Type AC/DC high voltage test equipment
16
XC -5/220 Type control box
