244-035 [MACOM]

240 Series DIN Panel Meters; 240系列DIN面板表


型号：	244-035
厂家：	Tyco Electronics
描述：	240 Series DIN Panel Meters 240系列DIN面板表
文件：	总12页 (文件大小：644K)
中文：	中文翻译
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240 Series DIN Panel Meters

An extensive range of 48, 72, 96 and 144mm DIN style panel meters offering

measurement of all electrical and electronic parameters. Meters are shock resistant

and vibration proof and supplied with terminal covers. A selection of slide in dials

and customised options are available.

Movements

In Crompton Instruments’ world-patented ‘Hi-Q’ taut band suspension, all the

delicate parts of the traditional instruments are eliminated. There are no pivots, no

jewel bearings, no hair-springs and no air damping vane. Instead, a tough platinum

ribbon suspends the moving element between front and rear tension springs.

Specially contoured pads are fitted to the ends of the spindle, and the working gap at

each end is filled with a high quality silicon fluid. The pads, together with the fluid

reservoir, form a system which acts as a resilient built-in shock absorber. This

provides both rotational and longitudinal damping as the moving element floats on

oil with no bearing friction and is effectively cushioned against shock and vibration.

360° Synchroscopes and power factor meters have robust pivot and jewel bearings

Features

with oil damping.

An extensive range of specialist

measuring meters in 4 case sizes

Dials, Scales and Pointers

Standard dials are matt white with black printed scales and bar knife-edge pointers.

Black dials with white or yellow scales and pointers are also available.

Interchangeable slide in dials are used on models 242, 243 and 244 90° moving iron,

moving coil and frequency meters.

General options include red supplementary pointers, red indexes (quadrant scales),

red, green or blue lines, bands or segments, finely spaced divisions, multi-scales,

special scales and captions to customer' requirements.

Shock resistant taut band suspension

Vibration-proof Hi-Q damping

Slide in dials for 90°current, voltage and

frequency on models 242, 243 and 244

Terminal covers supplied as standard

Benefits

Illumination

Low cost

Internal illumination is available in the following models:

• 244 and 246 shortscale moving coil and moving iron vane.

• 243, 244 and 246 longscale moving coil and moving iron vane.

Through dial (Translucent) illumination on 244 and 246 models.

Edge illumination on 243, 244 and 246 models.

Local indication

Ease of installation

Minimal training

Low maintenance

Customised options and features

Replaceable 6, 12 or 24V lamps are used on all models except 243 longscale meters,

where the lamps are internal.

Specification

Performance

Measuring Ranges

Accuracy Overload

Dimensions

Applications

Switchgear

BSEN60051

DIN 43701

BSEN60051

DIN 43700

Distribution systems

Generator sets

Scale Marking Generally

Magnetic Influence

Safety

DIN43802

BSEN60051

IEC414

Control panels

Energy management

Building management

Utility power monitoring

Process control

Terminals

Clamp strap M4 up to 25A. Clamp strap M8 over 25A

Up to 95% RH (non condensing)

2kV RMS for 1 minute

x 1.2 continuous x 10 for 5 seconds

x 1.2 continuous x 2 for 5 seconds

See main pages for other instruments

Less than 3 seconds is standard. More heavily damped

movements are available on request.

23°C

Humidity Range

Test Voltage @50Hz

Overload AC Current

Overload AC Voltage

Frequency

Motor control

Damping Time

Approvals

LRS and BV Approvals.

Standard Calibration

Operating Temperature

-20°C to +60°C

Enclosure Code

IP54 as standard (to BSEN60529). IP55 consult factory

Terminals IP20B with terminal cover or terminal

boots fitted

Case

Base

Grade UL94V0

Grade UL94V1

240 Series DIN Panel Meters

DIN 16257 symbol meaning for

calibration position

Specification Continued

Case

Dimensions and panel cutout conform to IEC473, DIN

43700. Models 242, 243 and 244 have cases and bezels

injection moulded in flame retardant engineering

thermoplastic, recognised by Underwriters Laboratory

materials specification. All 246 models have pressed

steel cases.

Vertical

Bezel

Bezel Window

Slim-line DIN43802 black as standard

Horizontal

Standard sheet glass, with zero adjusters where

appropriate. Non reflecting glass or polycarbonate

shatterproof windows are available.

Installation

Installations in switchboard panel or mosaic

arrangement on equipment or machine with a panel

thickness of up to 40mm in a horizontal or vertical

plane. Installation Category III

Inclined

60°

Inclination of dial surface to the

horizontal e.g 60°.

Fixing on Panel

Models 242, 243 and 244 – 2 corner fixing clamps and

tensioning thumb screws

Model 242 – available with a one piece ‘push on’ clamp.

Model 246 - 2 side fixing spring clips

Normal vertical mounting or as indicated on the scale

in accordance with DIN 16257. A deviation of 15° is

permissible

Required orientation must always be

stated when ordering if other than

vertical mounting is required.

Mounting Position

Approvals

Lloyds Shipping (LRS), Bureau Veritas (BV), EMC and LVD

Dimensions

Model

Bezel ‘A’

Panel cut-out ‘B’

Scale Length: 90°

242

48 x 48

45 x 45

243

72 x 72

68 x 68

244

96 x 96

92 x 92

246

144 x 144

138 x 138

145

Scale Length: 240°

112

150

230

Maximum overall depth ‘C’:

Ammeters and Voltmeters A.C. & D.C.*

Ammeters and Voltmeters with switch*

Dual Meters*

–

Elapsed Time Meter/Hours Run*

Maximum Demand Indicator*

Combined MDI & MI Indicator*

Maximum Demand Indicator with relay*

Frequency Meter 90°*

Frequency Meter 240°*

Phase Angle, Power Factor Meter 90°*

240°*

M.C. Indicator with separate transducer*

Dynamometer 360° Synchroscope*

Dynamometer 360° Power Factor Meter*

Phase Sequence Indicator*

Position Indicator*

–

125

120

107

120

125

–

125

–

Speed Indicator*

Temperature Indicators*

Quadra Meters*

Panel cut-out

Impulse Counters*

–

Wattmeter, Varmeter 90°

Wattmeter, Varmeter 240°

Model 244-21Y & 244-21Z

LED Synchroscope & Synchro Check Relay

LED 360° Synchroscope

107

142

125

–

Maximum Panel

thickness 10mm

–

Indicator Only

If separate terminal cover is used add 20 mm to dimension C

Not available

240 Series DIN Panel Meters

Moving Iron A.C. Ammeters and Voltmeters

Designed to measure A.C. current or voltage, these meters indicate true r.m.s. values

and are substantially independent of system waveform. Scales are calibrated down

to 20%, and ammeters can have overload scales x2, x3, x5 or x6 for motor start duty.

Ammeters can be supplied for use with -/1A or -/5A current transformers, whilst

voltmeters can be scaled for use with voltage transformers. Heavy damping is

available as an option. Meters can be used to measure D.C. at reduced accuracy.

Specification – Short Scale

Accuracy:

Class 1.5

Frequency:

Burden at 50Hz:

50 or 60Hz, (400Hz on request)

Ammeters: 0.5VA

Voltmeters: Up to 4.5VA maximum

Ammeters: 0.5A to 100A A.C. direct connected (40A for

242-75A and 246-07A). Maximum system voltage

720V A.C. Low load / high middle maximum 10A

Voltmeters: 6V to 600V

Ratings:

Connections

A.C. Ammeter

Product Codes – Short Scale

Bezel Size mm

Scale length mm

Product Codes

144

145

A.C. ammeter

242-75A

242-752

242-753

242-755

242-756

–

243-02A

243-022

243-023

243-025

243-026

243-02H

243-02V

243-02M

244-02A

244-022

244-023

244-025

244-026

244-02H

244-02V

244-02M

246-07A

246-072

246-073

246-075

246-076

–

x2 overload ammeter

x3 overload ammeter

x5 overload ammeter

x6 overload ammeter

Low load ammeter

A.C. voltmeter

242-75V

–

246-07V

–

Low middle voltmeter

Specification – Long Scale

Accuracy:

Class 1.5

Frequency:

Burden at 50Hz:

50 or 60Hz, (400Hz on request)

Ammeters: 1.5VA

A.C. Voltmeter

Voltmeters: 4.5VA maximum

Ratings:

Ammeters: 0.5A to 25A A.C. direct connected

Maximum system voltage 720V A.C. Low load / high

middle (maximum 10A)

Voltmeters: 6V to 600V A.C.

Product Codes – Long Scale

Bezel Size mm

Scale length mm

Product Codes

112

150

144

230

Ammeter

242-03A

242-032

242-033

242-035

242-036

–

243-03A

243-032

243-033

243-035

243-036

243-03H

243-03V

244-03A

244-032

244-033

244-035

244-036

244-03H

244-03V

246-03A

246-032

246-034

246-035

246-036

–

x2 overload ammeters

x3 overload ammeters

x5 overload ammeters

x6 overload ammeters

Low load ammeters

Voltmeter

242-03V

246-03V

240 Series DIN Panel Meters

Frequency Meters

These Frequency meters use an integral electronic converter and a moving coil

indicator. This meter is easy to read with an accuracy Class 0.5.

Specification

Accuracy:

Ratings:

Class 0.5

100V-125V A.C

200V-250V A.C.

380V-440V A.C.*

500V A.C.*

*For voltages above 380V use 242-013 with a 253-THZ,

in place of 242-41S

Models available for use with V.T.s

45/55Hz,

55/65Hz,

45/65Hz,

360/440Hz

Other scalings available on request

4VA Maximum

Frequency 0.5%:

Burden:

Connections

Product Code

Bezel Size mm

Scale length mm 42

Product Code

112

145

144

242-41S 242-053 243-41S 243-053 244-41S 244-41L 246-41S 246-41L

+253-THZ +253-THZ

Dual Frequency Meters

Two instruments in one case can be used to measure a wide range of frequencies.

These dual instruments save both panel space and assemly time. The 244-41D is an

ideal component in sychronising applications.

Specification

Accuracy:

Ratings:

Class 0.5

100V-125V A.C

200V-250V A.C.

380V-440V A.C.

500V A.C.

Models available for use with V.T.s

Frequency 0.5%:

45/55Hz,

55/65Hz,

45/65Hz,

360/440Hz

4VA Maximum

Connections

Burden:

Product Code

Bezel Size mm

Scale length mm

Product Code

244-41D

240 Series DIN Panel Meters

Moving Coil D.C. Ammeters and Voltmeters

Moving Coil Meters are suitable for all D.C. systems. The linear scale is calibrated

down to zero and the accuracy maintained down to 10%. High currents are measured

with separate shunts and suitably scaled indicators. Suppressed, centre and offset

zero models are available.

Specification

Accuracy:

Ratings:

Class 1.5

Ammeters: 100µA to 25A, (200µA for 05 model)

4/20mA suppressed zero

40A for model 243/244-01A

Voltmeters: 50mV to 600V

1/5V suppressed zero

50, 60, 75, 100, 150mV for use with shunts

Ammeters: 75mV internal shunt above 60mA

Voltmeters: 1000Ω/V above 1V

Impedance:

Connections

D.C. Ammeter

Further details on our T-Sheet T118 available on request.

Product Codes – Short Scale

Bezel Size mm

Scale length mm

Product Codes

144

145

Ammeters

Ammeters suppressed zero

Voltmeters

242-89A

242-89R

242-89V

242-89S

243-01A

243-01R

243-01V

243-01S

244-01A

244-01R

244-01V

244-01S

246-10A

246-10R

246-10V

246-10S

D.C. Voltmeter

Voltmeters suppressed zero

Product Codes – Long Scale

Bezel Size mm

Scale length mm

Product Codes

112

150

144

230

Ammeter

Ammeters suppressed zero

Voltmeters

242-05A

242-05R

242-05V

242-05S

243-05A

243-05R

243-05V

243-05S

244-05A

244-05R

244-05V

244-05S

246-05A

246-05R

246-05V

246-05S

Voltmeters suppressed zero

Moving Coil Dual D.C. Ammeters and Voltmeters

Dual instruments can be used to measure a wide range of currents and voltages,

and save both space and time by requiring only one panel cut-out.

The 244-80M allows for independent measurement of two D.C. currents in one case.

The 244-80E allows for independent measurement of two D.C. voltages in one case.

Specification

Accuracy:

Ratings:

Class 1.5

D.C. Current: 100µA to 25A direct connected

4/20mA suppressed zero.

D.C. Volts: 50mV to 600V

Connections

Dual D.C. Ammeter

1/5 volt suppressed zero

50, 60, 75, 150mV for use with shunts.

Product Codes

Bezel Size mm

Scale length mm

Product Code

Ammeters

Dual D.C. Voltmeter

244-80M

244-80E

Voltmeters

240 Series DIN Panel Meters

Temperature Indicators

Longscale Indicators to read temperature values, usually remotely with RTD or

thermocouple sensors supplied by the customer. RTD (Resistance Temperature

Detector) indicators measure the change in resistance of the sensor. A 2 or 3 wire

system may be used. Thermocouple indicators accept standard millivolt input

signals. Cold junction compensation is provided and thermocouple break indication

is incorporated.

Specification

Accuracy:

Class 1.5 - Indicator only. RTD indicator suitable for

10Ω copper 100Ω platinum, 100 & 120Ω nickel sensors

Power in RTD is 100µW approximately. Thermocouple

indicator suitable for J (0-700°C), K (0-1200°C)

50Ω maximum Circuit Resistance.

Auxiliary Supply:

Model 45R: from 63.5V to 480V A.C. at 50/60Hz

Model 45T: 110, 115, 220, 240, 380, 400, 480V A.C.

and 12, 24, 48, 110, 125V D.C.

Connections

Thermocouple Indicators -45TG

Burden:

-45R 2VA, -45T 3VA

Product Codes

Bezel Size mm

Scale length mm

Product Codes

RTD

150

144

230

244-45R

244-45T

246-45R

246-45T

Thermocouple

Process Indicators

RTD Indicators -45RG

Used to check process functions locally or remotely at centralised controls. These

moving coil instruments offer a wide variety of electrical and mechanical readouts

operated by transducer, tachogenerator, thermocouple, resistance bulb or other D.C.

analogue signals. Suppressed, centre and offset zero models are available on request.

Specification

Accuracy:

Ratings:

Burden:

Class 1.5

1, 2, 5, 10 & 20mA. 4/20mA suppressed zero.

See our technical data sheet T118.

Product Codes – Short Scale Models

Bezel Size mm

Scale length mm

Product Codes

A.C. Current

A.C. Voltage

Speed

Frequency

Phase Angle

Watts

144

145

242-89A

242-89V

242-892

242-893

242-894

242-895

242-896

242-897

243-01A

243-01V

243-012

243-013

243-014

243-015

243-016

243-017

244-01A

244-01V

244-012

244-013

244-014

244-015

244-016

244-017

246-10A

246-10V

246-102

246-103

246-104

246-105

246-106

246-107

VArs

Product Codes – Long Scale Models

Bezel Size mm

Scale length mm

Product Codes

A.C. Current

A.C. Voltage

Speed

Frequency

Phase Angle

Watts

112

150

144

230

242-05A

242-05V

242-052

242-053

242-054

242-055

242-056

242-057

243-05A

243-05V

243-052

243-053

243-054

243-055

243-056

243-057

244-05A

244-05V

244-052

244-053

244-054

244-055

244-056

244-057

246-05A

246-05V

246-052

246-053

246-054

246-055

246-056

246-057

Connections

VArs

Ca t a lo g u e Nu m b e rin g S ys t e m

Guide to Catalogue Num bering System – Exam ple Code: 244 – 03AG – LSPK – C6 – ER

244

SERIES

016 – Fiesta

TYPE / FUNCTION

INPUT OR

MOVEMENT RATING

LA – 1A

LS – 5A

PZ – 150V

RX – 300V

SJ – 600V

PN – 120V

RP – 240V

OPTIONS

Indicate as

required

– Amperes DC

075 – Short-case switchboard

077 – Standard switchboard

078 – Hi-shock sealed

079 – 8³/₄" switchboard

083 – 2" sealed

084 – 2¹/₂" sealed

242 – 48mm DIN

– Rectified amperes

– Center zero amps

– Zero offset current

– Amperes AC

– Volts AC

– High middle

– DC input non electrical

scaling

SE – 480V

243 – 72mm DIN

– VAr self contained

– Center zero voltage

– Zero offset voltage

– Live zero current

– Live zero voltage

– Volts DC

QQ – 120V 5A

QS – 240V 5A

QT – 480V 5A etc

244 – 96m DIN

246 – 144mm DIN

E242 – 48mm short-scale

E243 – 72mm short-scale

E244 – 96mm short-scale

SYSTEM

FREQUENCY

(AC Meters)

W – Rectified voltage

C4 – 400Hz

C5 – 50Hz

C6 – 60Hz

C7 – 50/60Hz

– Expanded scale AC

– Expanded scale DC

– 2 x overload ammeters

– 3 x overload ammeters

– 1-phase 2-wire watts

– 6 x overload ammeters

– 3-phase 3-wire watts

– 3-phase 4-wire watts

MOVEMENT CODE

NATIONAL STANDARD

SCALING OR OUTPUT

01 – Short-scale AC and DC

02 – Short-scale AC

03 – Long-scale AC and DC

05 – Long-scale AC and DC

07 – Edgewise AC DC

08 – Long-scale AC

10 – Edgewise AC and DC

11 – Long-scale DC

12 – Phase sequence meter

13 – 360 rotating iron PFI

14 – Synchroscope

15 – Elapsed time meter

16 – Thermal demand

ammeter

– ANSI C39.1

– BS 89

– DIN

– ANSI fixing captions

– Japanese instrument

Standard

BX – Volt free relay contacts

FA – 1mA

HG – 4/20mA

PK – 0/100

PZ – 0/150

RL – 0/200

RX – 0/300

SC – 0/400

SJ – 0/600

SS – 0/1000

TM – 0/2000

UB – 0/4000

UJ – 0/5000 etc

21 – Wattmeter

30 – Meter relay

31 – VArmeter

41L – Frequency meter

long-scale

41S – Frequency meter

short-scale

42 – Power factor meter

45 – RTD temperature

92 – Shunts

94 – Current transformers

HW – Kilowatt hour class 1.0

KH – Kilowatt hours

This guide is not inclusive of all catalogue numbers and should be

used for reference only, as improper combinations can be achieved.

– Kilowatt hours class 2.0

Glo s s a ry

Glossary of Term s

Moving iron, also called ‘iron vane’ in the North American market for measuring AC amps and volts.

Moving coil for measuring DC amps and volts.

Taut band suspension

m ovem ent

A meter movement held under tension, usually on a ligament.

Ligam ent

The taut band.

Pivot and jew ell (P&J ) A movement which rotates on a spindle, and pivots within an oil filled jewel. This type of movement

typically offers excellent vibration resistance characteristics.

Short-scale

Long-scale

FSD

Angle of deflection for a movement is usually 90 degrees but ANSI is 100 degrees in some products.

Angle of deflection for a movement is usually 240 degrees but is frequently referred to as 270 degree.

Full scale deflection.

End scale.

Input

Electrical value from which the measurement is derived to achieve the full scale deflection of

the movement.

Linear

A term used to state that the input is constant, allowing for an even scaling.

Non linear

The opposite of linear, giving a scale shape which will cramp at some point on the dial. Usually

inaccurate below 20% of the full-scale value.

Logarithm ic scaling

Scale

A log scale usually derived from a non linear DC output.

The graphical representation of the value being measured.

More than one set of figures on a dial plate.

Dual arc

Dial plate/ scale plate

Calibration chart

Enclosure rating

Surface on which the dial is drawn.

A chart matching input values to scale mark, mainly used for complicated scales.

Usually expressed in the form of IP rating or as NEMA in America. This states the product,

resistance to the ingress of moisture and dust.

DIN

European standard meter shape. It is based on multiplies of 24mm, i.e. 48, 72, 96, 144 mm.

American National Instrument Standard.

ANSI

J IS

Japanese Instrument Standard.

BS89

Old British Standard usually refers to rectangular meter or “Fiesta” style products.

General term for long-scale instruments.

Sw itchboard m eter

Panel m eter

Analogue indicator

General name for short-scale instruments.

Generic term for instruments usually refers to a low accuracy meter. An indicator only.

INSTALLATION INSTRUCTIONS

Page 1 of 2

Analogue Instruments

DIN Panel Meters

Ref: DIN – Rev 1 – Sept 02

SAFETY SPECIFICATION

The product should be panel mounted using the mounting

hardware supplied. Consideration should be given to the

space behind the unit to allow for bends in the connecting

cables. The terminals on the meter rear should be

protected from liquids.

Permanently connected use.

Normal condition

Basic insulation

Installation category II

Pollution degree 2

The unit must not be mounted where it can be subjected

to direct sunlight, and vibration should be kept to a

minimum. Connection wires must be sized to comply with

local regulations and must be terminated on tags suitable

for screw connection. The product has no internal fuse,

therefore; external fuses must be used for safety

protection under fault conditions.

This product is intended as part of a permanent

installation.

Low Voltage Directive BSEN 61010-1

For use in altitudes up to 2000m

Temperature 0-40 degree C Maximum relative humidity

80% for temperature up to 31º C decreasing linearly to

50% RH at 40ºC

SAFETY INSTALLATION FOR COMPLIANCE TO

SAFTEY STANDARDS

Operating temperature to retained stated product

accuracy 0-40ºC

WARNING

Electromagnetic Compatibility

This unit has been designed to provide protection against EM

(electro-magnetic) interference in line with requirements of

EU and other regulations. Precautions necessary to provide

proper operation of this and adjacent equipment will be

installation dependent and so the following can only be

general guidance:-

During normal operation, voltages hazardous to life

may be present at some of the terminals of this unit.

Installation and servicing should be performed only

by qualified, properly trained personnel' abiding by

local regulations. Ensure all supplies are de-

energised before attempting connection or other

procedures.

Terminals should not be user accessible after

installation and external installation provisions must

be sufficient to prevent hazards under fault

conditions.

Avoid routing wiring to this unit alongside cables and

products that are, or could be, a source of interference.

The auxiliary supply to the unit should not be subject to

excessive interference. In some cases, a supply line

filter may be required.

To protect the product against incorrect operation or

permanent damage, surge transients must be controlled.

It is good EMC practice to suppress differential surges to

2kV or less at the source. The unit has been designed

to automatically recover from typical transients, however

in extreme circumstances it may be necessary to

temporarily disconnect the auxiliary supply for a period

of greater than 5 seconds to restore correct operation.

Screened communication and small signal leads are

recommended and may be required. These and other

connecting leads may require the fitting of RF

suppression components, such as ferrite absorbers, line

filters etc., if RF fields cause problems.

It is good practice to install sensitive electronic

instruments that are performing critical functions in EMC

enclosures that protect against electrical interference

causing a disturbance in function.

Never open circuit the secondary winding of an

energised current transformer.

SAFETY STANDARDS

This product complies with:

International standard: IEC1010-1

For UK: BS EN 61010-1 (IEC1010-1)

Fusing and connections

This unit must be fitted with external fuses in voltage

supply lines. Voltage input lines must be fused with a

quick blow fuse 1A maximum. Choose fuses of a type

and with a breaking capacity appropriate to the supply

and in accordance with local regulations.

Page 2 of 2

INSTALLATION INSTRUCTIONS

Analogue Instruments

DIN Panel Meters

Ref: DIN – Rev 1 – Sept 02

48 x 48

72 x 72

96 x 96

144 x 144

45 x 45

68 x 68

92 x 92

135 x 135

The Information contained in these installation instructions is for use only by installers trained to make electrical power installations and is intended to describe the

correct method of installation for this product. However, Tyco Electronics has no control over the field conditions, which influence product installation.

It is the user's responsibility to determine the suitability of the installation method in the user's field conditions. Tyco Electronics' only obligations are those in Tyco

Electronics' standard Conditions of Sale for this product and in no case will Tyco Electronics be liable for any other incidental, indirect or consequential damages

arising from the use or misuse of the products. Crompton is a trademark.

Tyco Electronics UK Limited

Crompton Instruments

Freebournes Road, Witham, Essex, CM8 3AH, UK

Phone: +44 1376 509 509 Fax: +44 1376 509 511

http://energy.tycoelectronics.com

INSTALLATION INSTRUCTIONS

Page 1 of 2

Analogue Instruments

Ref: IWYSNC – Rev 6 – Sept 02

DIN Instruments 240 Series & ANSI

Switchboard Meters 070 Series

LED Synchroscope & Synchrocheck

Relay with Dead Bus

Products Covered

Model

Description

244-14A) Single Phase or 3 phase 3/4 Wire LED

077-14A) - synchroscope

244-14L) Single Phase or 3 phase 3/4 wire LED

077-14L) - Synchroscope and Synchro check relay

244-14G) 244-14L with voltage difference input range

244-14H 244-14D with voltage difference input range

244-14D) Single phase or 3-phase 3/4 wire LED

077-14D) - Synchroscope and Synchro check relay with

deadbus

It is recommended adjustments be made with the

supplies de-energised, but if this is not possible, then

extreme caution should be exercised.

Terminals should not be user accessible after

installation and external installation provisions must be

sufficient to prevent hazards under fault conditions.

This unit is not intended to function as part of a system

providing the sole means of fault protection - good

engineering practice dictates that any critical function be

protected by at least two independent and diverse

means.

Introduction

244 models may be mounted in a panel of any thickness up

to a maximum of 12mm. Mounting is by two clamps and

thumbscrews.

077 Models may be mounted in a panel thickness up to a

maximum of 8mm (5/16”). Mounting is by 4 x 1/4 - 28 UNF

studs and nuts.

Screw torque

Main terminal screws should be tightened to 1.35Nm or 1.0

ft/lbf only. Detachable terminal connector screws should be

tightened to 0.9Nm or 0.7 ft/lbf only. Where fitted, terminal

covers are held in place by miniature self tapping screws

into plastic. These screws should be tightened by hand

only, sufficiently to secure the terminal cover and prevent it

vibrating.

For all models consideration should be given to the space

required behind the units to allow for bends in the

connecting cables. Additional protection to the panel may

be obtained by the use of an optional gasket. The terminals

at the rear of the case should be protected from liquids.

Units should be mounted in a reasonably stable ambient

temperature and in any event where the temperature is

within the range 0-60 ºC.

Electromagnetic Compatibility

This unit has been designed to provide protection against

EM (electro-magnetic) interference in line with requirements

of EU and other regulations. Precautions necessary to

provide proper operation of this and adjacent equipment will

be installation dependent and so the following can only be

general guidance:-

The unit should not be mounted where it is subjected to

excessive direct sunlight; vibration should be kept to a

minimum. Connection wires should be sized to comply to

local regulations and should be terminated in tags suitable

for the crew connections provided, labels are fixed to the

units and carry full connection information and data including

type number, input voltage, current, frequency and supply as

appropriate. The products do not have internal fuses

therefore external fuses must be used for safety protection

under fault conditions.

Avoid routing wiring to this unit alongside cables and

products that are, or could be, a source of interference.

The auxiliary supply to the unit should not be subject to

excessive interference. In some cases, a supply line

filter may be required.

To protect the product against incorrect operation or

permanent damage, surge transients must be

controlled. It is good EMC practice to suppress

differential surges to 2kV or less at the source. The unit

has been designed to automatically recover from typical

transients, however in extreme circumstances it may be

necessary to temporarily disconnect the auxiliary supply

for a period of greater than 5 seconds to restore correct

operation.

Fusing and connections

This unit must be fitted with external fuses in voltage

supply lines.

Voltage input lines must be fused with a quick blow

fuse 1A maximum.

Choose fuses of a type and with a breaking capacity

appropriate to the supply and in accordance with local

regulations.

Screened communication and small signal leads are

recommended and may be required. These and other

connecting leads may require the fitting of RF

suppression components, such as ferrite absorbers, line

filters etc., if RF fields cause problems.

Warning

During normal operation, voltages hazardous to life may

be present at some of the terminals of this unit.

Installation and servicing should be performed only by

qualified, properly trained personnel' abiding by local

regulations. Ensure all supplies are de-energised

before attempting connection or other procedures.

It is good practice to install sensitive electronic instruments

that are performing critical functions in EMC enclosures that

protect against electrical interference causing a disturbance

in function.

Page 2 of 2

INSTALLATION INSTRUCTIONS

Ref: IWYSNC – Rev 6 – Sept 02

Analogue Instruments

DIN Instruments 240 Series & ANSI

Switchboard Meters 070 Series

LED Synchroscope & Synchrocheck

Relay with Dead Bus

Setting Up and Maintenance

The Operation as Synchro Check Relay with Dead Bus

Units are adjusted before despatch and therefore no

adjustments are required. Unless a fault develops, the unit

requires little attention. During routine servicing and

inspection of the associated equipment, the unit should be

inspected to normal standards for this class of equipment.

For example remove accumulations of dust and check all

connections for tightness and corrosion. In the event of a

repair being necessary, it is recommended that the unit be

returned to the factory or to the nearest Crompton

Instruments Service Centre, (details on page 2). Should

repair be attempted then replacement components must be

of the same type, rating and tolerance as those used in the

original circuit. It is important that should calibration be

deemed necessary, say after repair, then this should only be

attempted if the required high accuracy equipment is

available. With any enquiry please quote the full model

number found on the side of the label. The unit must be

recalibrated after repair.

Relay Ratings

Single pole changeover 250V, 5A a.c. resistive.

Model 077-14A 360° LED Synchroscope & 360 LED

Synchroscope and Synchro Check Relay Models 077-

14L/D/G/H

The operation as a Synchroscope

The 244-14A and 077-14A synchrocopes provide illuminated

indication of the actual phase difference between the

generator GEN voltages and the busbar voltage. If the LED

display rotates clockwise the generator frequency is too high

and must be reduced and visa versa if the LED display turns

anticlockwise.

The 244-14D/H and 077-14D operate in the same way as

the 244-14L and 077-14L Synchro check relays with the

addition of a dead bus option. This optional feature enables

the relay to energise with a GEN supply only thus allowing

the generator to power the BUS during a supply failure.

The operation as synchrocheck relay

The 244-14L/G and 077-14L synchroscopes are based on a

microcontroller, which interprets the input signals and

displays the phase and voltage information on a series of

light emitting diodes (LED’s).

Connection Diagrams

Model 244-14A 360° LED Synchroscope & Models 244-

‘GEN’

‘BUS’

L1 L2 L3

14L/D/G/H 360 LED Synchroscope and Synchro Check

Twenty four red LED’s are arranged in a ring simulating the

traditional 360° analogue movement. Only one LED is lit at

any one time indicating the phase difference between the

busbar (BUS) and generator (GEN) signals. The unit will

operate correctly at any frequency within its range.

The voltage levels of the two input signals are continuously

measured and compared with the user adjustable voltage

difference setting. If the measured difference is outside the

allowable range, the ring of LED’s will be extinguished and

the red GEN LED will be lit. If the voltage difference is within

range the green GEN LED will be lit and the ring of LED’s

will indicate the phase relationship.

Once the BUS and GEN signals become coincident, the unit

will wait for an adjustable time delay before lighting the

green triangular SYNCHRONISED LEDS and operating the

relay. The ring of LED is also extinguished which means the

user will only see green LED’s when the generator GEN is

synchronised with the BUS.

^L1relay

Relay

NC = Normally closed

CO = Common

NO = Normally open

L O A D

Terminals 3, 10 and 12 are not

used on Model 077-14A.

NC = Normally closed

CO = Common

NO = Normally open

The rear pot adjustments should be set to suit operational

requirements.

Terminals 1,3 & 4 are not used

on Model 244-14A.

The Information contained in these installation instructions is for use only by installers trained to make electrical power installations and is intended to describe the

correct method of installation for this product. However, Tyco Electronics has no control over the field conditions, which influence product installation.

It is the user's responsibility to determine the suitability of the installation method in the user's field conditions. Tyco Electronics' only obligations are those in Tyco

Electronics' standard Conditions of Sale for this product and in no case will Tyco Electronics be liable for any other incidental, indirect or consequential damages

arising from the use or misuse of the products. Crompton is a trademark.

Tyco Electronics UK Limited

Crompton Instruments

Freebournes Road, Witham, Essex, CM8 3AH, UK

Phone: +44 1376 509 509 Fax: +44 1376 509 511

http://energy.tycoelectronics.com

244-035 [MACOM]

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