China Breaker & Protector - Page 8

Major Technical Data:

Rated voltage: 12KV

Rated frequency: 50HZ

Rated current: 630A. 1250A. 1600A. 2000A. 2500A. 3150A. 4000A. 5000A.

Rated short circuit current to be turn-off: 20KA. 31. 5KA. 40KA. 63KA.

Mechanical lifetime of the operating device: 100, 000 times (5000A 63KA Mechanical lifetime: 60, 000 times)

Mechanical lifetime: (630A-1250A) 20KA 50, 000 times.

(1250A-3150A) 31. 5KA 50, 000 times

(1250A-4000A) 40KA 30, 000 times

(5000A) 63KA 30, 000 times

Operating voltage for switch-on and switch-off: DC220V or AC220V

Introduction:

ZN73A-12Permanent Magnetic Medium Voltage Indoor Vacuum Circuit Breaker is one of Permanent Magnetic Products Series developed and manufactured by Jilin Yongda Group itself, and currently it is the permanent magnetic circuit breaker which occupies the largest domestic market. It is extensively applied to large steel makers, such as Baoshan Steel, Shoudu Steel, Anshan Steel, as well as petrochemical sector, electric power sector etc. And gained excellent reputation from the consumers.

NS series moulded case circuit breaker is one of the most advanced type breakers in the world, which adopt international advanced design and manufacture fechnology. They are suitable for short circuit and overload protection for circuit of AC 690V 50/60HZ, rated current from 12.5A to 630A. It takes protect effect when mouse cage motors non-frequent start, breaking off working and protecting overload, short circuit and lacking voltage.

Tripping Characteristics of MCCB

Rated Current of Release(A) Thermodynamic Release (ambient temp +40C) Operational Current of Magnetic Release(A)

1.05In(cold state) inoperative time(h) 1.30In(heat state) operative time(h)

In 63 1 <1 10In+20%

63 2 <2 10In +20%

100 2 <2 5-10In+20%

Rated Current of Release(A) Thermodynamic Release (ambient temp +40C) Operational Current of

Magnetic

Release(A)

1.0In(cold state)operative time(h) 1.20In(heat state)operative time(h) 1.50In(heat state)operative time(h) 1.01In(heat state)operative time(h)

12.5 In 400 2 <2 4min S 12In+20%

Main Technical Specifications

Type Rated Current (A) Poles Rated Insulating Voltage(A) Rated Operating Voltage (A) Acting Over Distance (mm) Ultimate short circuit Breaker Capacity Servies Short Circuit Breaker Capacity Operating performance(times)

NS-100D 12.5,

16,

20,

25,

32

,40,

50,

63,

80,

100 3,4 950 690 0 18 18 1500 8500

NS-100N 25 25

NS-100H 70 70

NS-100L 150 150

NS-160D 16,

20,

25,

32,

40,

50,

63,

80,

100,

125,

160 25 25 1500 7000

NS-160N 36 36

NS-160H 70 70

NS-160L 150 150

NS-250D 160,180,

200,225,

250 25 25 1000 7000

NS-250N 36 36

NS-250H 70 70

NS-250L 150 150

NS-400D 200,

225,

250,

300,

315,

400 35 35 1000 4000

NS-400N 45 45

NS-400H 70 70

NS-400L 150 150

NS-630D 315,

350,

400,

500,

600,

630 35 35 1000 4000

NS-630N 45 45

NS-630H 70 70

NS-630L 150 150

Application

Applicable to various communication systems working at microwave bands, e. g.: GSM, CDMA, WCDMA, CDMA2000, TD-SCDMA and other mobile communication systems with BIAS T or without feed power.

Applicable for 1.6GHz GPS and 2.4GHz amplified frequency communication systems working at microwave bands.

Applicable to wireless access systems for S, C (5.8GHz) and other bands.

Product Features

It is a feed-power lightning arrester designed with a high-pass filter and has the following characteristics:

Big lightning through-flow

Small standing wave ratio

Low insertion loss

Super-low residual voltage

Long service life and can withstand many impacts

Product Parameters

Model

HY2500TDIN-K15 or K25V

Working frequency

800-2700MHz

Characteristic impedance

50

Insertion loss

0.2dB

Standing wave ratio

1.15

Transmitted power

100W

Max. Discharging Current Imax 8/20 s

20KA

Residual voltage (8/20ms 5kA)

40V

Voltage current

15V(or 25V)

Interface

DIN(7/16); N

External dimensions

DIN 95x34x55mm

N 85x34x55mm

The product is applicable to circuit with rated voltage 230(240)/400(415)V AC, 50Hz for power distribution and motor operation as switching disconnector in both household & commercial and electric equipments installations.

The product, free of maintenance, is suitable for use by non-professionals.

Our company's products cover Miniature Circuit Breaker (MBC), Residual Current Circuit Breaker (RCCB), Residual Current Circuit Breaker with Overcurrent Protection (RCOB), Switch-disconnector, Distribution Box or etc. In China, the company takes the reputation as the largest manufacturer of electro-magnetic type RCCB and RCBO. OEM or ODM projects are fully accepted, and currently the company is co-operating with numbers of renowned international corporations for such projects.

We are manufacturer of different kinds of switchgear. Vacum circuit breaker.

If you are interested in this area, please contact me for further details

Vulcanized fiber tube is manufactured by winding zinc chloride treated paper on making mandrel to the predetermined wall thickness. They are then going through puring, drying, rolling, grinding, and sanding processes to get desired inside and outside diameters.

Vulcanized fiber tube has a density around 1. 40 g/cm. It has good physical properties, mechanical properties, dielectric strength, arc resistance, and arc-quenching characteristics. Because of its excellent machinability, vulcanized fiber tube can be sanded, knurled, spirally cut, threaded, lathed, and easily fabricated to various products. The major applications of vulcanized fiber tubes are fuse cartridges, high voltage cutout fuse liners, lightning arresters, grommets, insulators, and bushings.

Color: Gray, Black, Red, and White

Standard Length: 30", 42", and 48"

3SB1-100 Mini Circuit Breaker is used in AC 50Hz or 60Hz, single phase 240V, three phase 415V to protect the circuit against overload and short circuit. The breaking capacity is 10KA according to IEC60947-2.

Rated current: 40-100A

Rated voltage: 130-440V

Pole number: 1, 2, 3, 4

For more information, pls visit our homepage.

DW45 series air circuit breakers (ACB) are used to protect the circuit from overload, under-voltage, short-circuit and earth fault in distribution electric net with AC50Hz, rated operation voltage 400/690V, rated current 400A 6300A. Frame under 630A can be used as overload, under-voltage and short-circuit protection for electric motors. The key part uses intelligent release unit to ensure selective protection ways to make the circuit release from unnecessary power-off and high operation reliability.

The products conform to IEC 60947-2, IEC 60947-4 standards.

Normal operation and mounting requirements:

1) Altitude for installation: <2000m

2) Ambient temperature: -5 ~ +40&ordm;C (minimum value within -10 ~ -25&ordm; C applicable, >+40&ordm; C or <-25&ordm; C need negotiation)

3) Humidity:

aRelative humidity of atmosphere: <50% when the temperature kept under +40&ordm; C

bHigher relative humidity can be permitted at lower temperature

cMonthly average humidity is under 90% when the min. monthly average humidity is under +25&ordm; C in the most watery month

Meanwhile the coagulate water occurred on the surface of products should be taken into account

4) Pollution degree: 3

5) Installation category: IV; for auxiliary circuit the under-voltage release coil and primary coil of voltage transformer are the same with breaker, the others are construction features

This kind of product is divided into two types: withdrawable and fixed type. Withdrawable type is combined by contact system, intelligent release, manual operation mechanism, electric operation mechanism and mounting board; withdrawable type are combined by contact system, intelligent release, manual operation mechanism, electric operation mechanism and withdraw base. Breakers are solid distributing. It has compact construction and small volume. Contact system is in the insulation bottom-board. Phase-contacts are disconnected to form a little scope. The intelligent release, manual operation mechanism and electric operation mechanism are in the front the contact system one by one and are independent units. If one unit is damaged you can disassemble it to replace for a new one.

Because the product only uses one group of contacts (omit the arcing contacts) to decrease operation force of contacts and accelerate the procedure of breaking, the contact system uses parallel method to decrease electric exclusion force and to improve the electric stability. Contacts, soft connecting and bus bar all use welding to low the touching resistance and power consumption. The arc-damping chamber is made by insulation material. Contact system and arc-damping system are placed between upper base and bottom base both of which are made from high strength and excellent electric performance insulation materials. Each phase is designed as independent arc-damping chamber while contacts are assembled on the insulation brackets to prevent from phase-to-phase short circuit. When breaking short circuit current the air can only give out to the upper position (ensure the reliability of down line-in wiring way).

The ACB is designed with the operating mechanism charged either manually or electricallyfor closing and opening. Its closing speed is independent of the speed of electric and manual operation. The energy stored springs of the ACB is charged through a cam. The ACB is designed with three positions (including trip free function).

Intelligent release has such functions as below:

1) Reverse long time delay for over load protection, reverse short-time delay, definite short-time delay, and instantaneous for short-circuit protection

2) Earth fault protection

3) Overload alarm

4) Test

5) Load monitoring

6) Functional display

7) Diagnostic

8) MCR

9) Thermal memory

10) Contact abrasion indication

11) Fault memory

We can supply power supply lightning arresters, computer signal lightning guards, programmable telephone signal lightning guards, and communication antenna, etc. Our products can entirely meet the needs of lightning-protection in the field of post telephone and telegraph communication, broadcast and television, bank and finance, petroleum and chemical industries, domestic airport, railway and transportation, intelligent buildings, etc.

Metal Oxide surge arrester are protective electrical apparatus from over voltage. The following surge arrester comply with IEC and ANSI standard. In addition, according to user's requirement, disconnector can be installed on the ground end of the arrester, and other kind of arrester can also be manufacturered.

Metal Oxide Surge Arrester For A.C. System

Range:

Rated Voltage from 3-36kV

Discharge Current 5kA or 10kA

Gap or Gapless

With disconnector or Without Disconnector

Secondary Metal Oxide Surge Arrester Without Gap for A.C.System

Range:

Rated Voltage: 0.28, 0.48, 0.50, 0.66, 0.75kV

Norminal Discharge Current: 1.5kA