pc8ahx buyers guide

8/10/2019 PC8AHX Buyers Guide

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Auxiliary relay for railways

Type PC8AHX


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2 ABB

ABB a global technology leader

Advantage ABB

120 years of technology and innovation

Unparalleled domain competence

Global experience

Complete solution capabilities

Large installed base

Environment-friendly technologies

ABB is a global leader in Power and Automation

technologies that enable utility and industry

customers to improve performance while lowering

environmental impact. The ABB Group of

companies operates in around 100 countries and

employs over 1,03,000 people.

In India, ABB serves customers with the complete

range of power and automation technologies. The

company has a vast installed base, extensive

manufacturing facilities and a countrywide marketing

and service presence.

As a part of its Power Technologies offering, ABB

serves electric, gas and water utilities as well as

industrial and commercial customers with a wide

range of products, systems and services for power

generation, transmission and distribution. ABBs

system offering ranges from Electrical Balance of Plant

(EBOP) for power plants, bulk power transmission,

turnkey substations and complete electrification to

utility automation and power distribution.

The product offering covers a wide spectrum of

technologies across the entire voltage range

including indoor and outdoor circuit breakers, air

and gas insulated switchgear, disconnectors,

capacitor banks, reactive power compensators,

power transformers, distribution transformers,

instrument transformers, Compact Secondary

Substations (CSS) and Ring Main Units (RMU).

Features

7 heavy-duty contacts

Double interruption contacts

Contact configuration can be changed with

ease

Field weakening resistor for low burden

Plug-in base mounting

Robust design for rolling stock

Auxiliary relay for railways

Type PC8AHX

Application

The PC8AHX relay is designed for use in rail

vehicles, where a high degree of reliability and a high

contact rating are stipulated, with minimal internal

consumption. Acting as an instantaneous switching

element, it provides galvanic separation and contactmultiplication in protection, sequencing and signaling

systems of locomotives. The relay has a proven

design and it is suitable for critical electrical,

mechanical and environmental requirements of

railways.

Description

The auxiliary relays type PC8AHX is an

instantaneous, plunger-type relay with heavy-duty

double interruption contacts. The relay picks up

when 110 V DC is extended to terminal a and b. It

drops out when this voltage is interrupted. The

PC8AHX relay has seven output contacts. The low

pick-up value of the PC8AHX relay (approx. 50% of

rated) along with the plunger movement of 3 mm

and the strong restoring springs ensure that the

holding force on the plunger is sufficiently large,

both, in picked up and dropped out conditions. The

strong holding force in turn ensures operational

reliability in conditions of vibration and shock,

expected in rail vehicles.

The contacts are made of silver-palladium alloy and

are gold plated. The special contact metallurgy

assures contact life (electrical & mechanical durability)

in severe environmental conditions expected in rail

vehicles. The contacts have low resistance and

unlike pure silver contacts, they can withstand

noxious effects of tropical conditions and are free

from sulphur attacks. This feature makes the relays

suitable for higher switching rates.

A transparent protective hood of polycarbonate

material, that does not burn easily, provides good

protection against dust. The plug-in mounting

method is ideal for installation and servicing. Guide

pins prevent the relay from being plugged in the

wrong way round. The marking of the terminals on

the base matches with that of the relay contacts.


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ABB 3

Technical data

Energizing quantities, rated values and limits

Contact data

Contact configuration 4N/O+3N/C

Maximum voltage within contacts system 250V DC/AC

Rated current 5 A

Max. making current 25 A Max. Breaking capacities

Rated voltage UN

110 V DC

Operative voltage range 70 - 125 V DC

Pick-up voltage < 70 V DC

Drop-out voltage >10% of rated voltage

Permitted ambient temperature range 00C to +550C

Pick-up time at UN (typical) 20-30ms

Power consumption at rated voltage 110VDC 6 W(approx)

Mechanical durability 1 Million switching operations &

Tested according to IEC 77, IEC 255 200 Draw-out/Plug-in operations

Weight 0.8Kg

Breaking capacity: Tested according to IEC 77 3A, 180 Operations at 30 OP/Hr

at 110 V DC and L/R 40 ms.Making capacity: Tested according to IEC 77 25A, 180 Operations at 30 OP/Hr

at 110 V DC and Resistive Load

Electrical endurance: 0.2 Million operations,

Tested according to IEC 77, IEC 255-23 at 110 V DC, 0.5A L/R 40 ms.

Terminals Suitable for 2x2.5mm2wires

Electrical tests

Measurement of resistance; Tested acc. to IEC 77 +/- 10% of specified

Temperature-rise: Tested acc. to IEC 77,IEC 255 Coil (class B), Contact

Insulation resistance: Tested acc. to IEC 255-5 >100 M Ohm at 500 V DC

Dielectric: Tested acc. to IEC 77, 255-5 2.0 kV, 50 Hz, 1 minImpulse: Tested acc. to IEC 255-5 5 kV, 1.2/50s, 0.5J

Environmental tests

Vibration: Tested acc. to IEC 77 +/- 3g, 2Hrs/ axis

Shock: Tested acc. to IEC 77 +/- 3g, 50Hz, 2min

Dry heat: Tested acc. to IEC 68-2-2 at +550C in energised condition

Dry cold: Tested acc. to IEC 68-2-1 at 00C

Damp heat (cyclic - 2days): 12 Hr/550C + 12 Hr/250 C x 2 @ 95% RH

Tested acc. to IEC 68-2-30

Salt mist (cyclic - 7days): 2 Hr spray periods, 5% NaCl solution

Tested acc. to IEC 77, IEC-68-2-52 22 Hr humidity storage periods, 93% RH

Voltage 24V 48V 110V 250V

Contacts 1 2 in 1 2 in 1 2 in 1 2 in 2 in

parallel parallel parallel parallel series

DC resistive load 5A 10A 5A 10A 5A 7A 1A - 5A

DC inductive. L/R =15ms 5A 10A 5A 8A 4A - 1A - 4A

DC inductive, L/R =40ms 4A 8A 4A 8A 3A - 0.5A - 2A

AC resistive & inductive 10A - 10A - 10A - 10A - -


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ABB Limited

Distribution Automation

Maneja,Vadodara 390 013, India.

Tel: +91 265 2604384/5/6

+91 265 2604397

Fax:+91 265 2638922

E-mail: [email protected]

Regional Marketing Offices:

NBCC Tower

4th Floor

No. 15, Bhikaji Cama Place

New Delhi 110 066

Tel: +91 11 26186000

Fax: +91 11 26197592/84035

4th Floor

No. 9

Elgin Road

Kolkata 700 020

Tel: +91 33 22832906/8

Fax: +91 33 22832990

ABB House

Dr. S B Path

Ballard Estate

Mumbai 400 038

Tel: +91 22 56318231 39

Fax: +91 22 56318276/77

Embassy Star, 1st Floor

No. 8, Palace Road

Vasanth Nagar

Bangalore 560 052

Tel: +91 80 22949779

Fax: +91 80 22949808

Century Plaza

No. 3C, 3D & 3F, 3rd Floor

561 / 562, Anna Salai

Teynampet (Mount Road)

Chennai 600 018

Tel: +91 44 24340201

Fax: +91 44 24340282

Vandana House

1st Floor

G E Road, Ramkund

Raipur 492 001

Tel: +91 771 5060816-8

Fax: +91 771 5053391www.abb.co.in

North

East

West South

Central

Connection diagram and contact configuration

Fig. 1- Relay on plug-in base mounting

Dimensions

Legend Aa : Terminals; Db: Mounting hole; E01:

Cut-out for rear wiring; *: Space for removing hood;

Dw: Field weakening resistor; 2): Fixing screwFig.2 Plug-in base mounting

PC8AHX/12/2005/01-500

pc8ahx buyers guide

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