PTR HARTMANN TECHNICAL ANNEX Introduction

CONNECTION TECHNOLOGY: Quality Down to the Tiniest Detail

选型目录：

Company and product profile

PCB TERMINAL BLOCKS

PCB MULTI-CONNECTOR

INTERFACE PIN BLOCKS

ACCESSORIES

TECHNICAL ANNEX

REPRESENTATIONS

ORDER NUMBER / TYPE INDE

Adherence to international legislation, standards and rules is a matter of course

for PTR HARTMANN GmbH and is reflected in the company‘s high-quality

products, which conform to all German, European and international quality

standards.

The fundamental precondition for this is PTR HARTMANN GmbH‘s certification in

conformity to

»

DIN EN ISO 9001:2015

TECHNICAL

ANNEX

All PCB terminal blocks, PCB multi-connectors

and interface pin blocks conform to the

specifications of legal approvals, standards and

egulations.

348

TECHNICAL APPENDIX

TECHNICAL APPENDIX //

349

RESPONSIBILITY TOWARDS THE ENVIRONMENT AND MANKIND

HOUSEHOLD APPLIANCE

350

TECHNICAL ANNEX

PTR HARTMANN is very aware of its responsibilities towards the

environment and mankind. This is why PTR HARTMANN has

been certified since 1999 according to

DIN EN ISO 14001

(environmental management standard). New environmental

targets are regularly defined, and conformity is confirmed in the

annual TÜV audits. Since 2008, PTR HARTMANN has also

defined its conformity with and pursuance of environmental

goals according to EU directive

(EG)

1907/2006

, generally known as the REACH directive. In

accordance with the EU RoHS directive, with whose current

RoHS2 2011/65/EU

(inclusive supplement directive

(EU)

2015/863

) version PTR HARTMANN also complies, this

extends the goal of environmental friendliness to include the

detailed maintenance of human health. This means that the

following are excluded from new PTR HARTMANN products as

early as the design phase: materials which are harmful to the

environment, non-degradable, bioaccumulative, toxic,

carcinogenic, mutagenic or toxic for reproduction.

A declaration of conformity regarding the latest state of the

REACH and ROHS2 guideline can be viewed and downloaded as

a PDF file at any time from the PTR HARTMANN website at

www.ptr-hartmann.com

In the same way, PTR HARTMANN automatically and

immediately checks new environmental and health guidelines

for conformity, issues the appropriate declarations of conformity,

and adapts products when necessary to ensure conformity.

2011/65/EU – „RoHS2“

Directive of the EuropeanParliament and of the Council on

the Restriction of the Use of Certain Hazardous Substances

in Electrical and Electronic Equipment (recast)

(EU) 2015/863 – „RoHS2“ Complement

COMMISSION DELEGATED DIRECTIVE amending Annex II

to Directive 2011/65/EU of the European Parliament and of

the Council as regards the list of restricted substances.

(EG) 1907/2006 - „REACH“

Regulation of the European Parliament and of the Council

of 18 December 2006 concerning the Registration, Evalua-

tion, Authorisation and Restriction of Chemicals (REACH),

establishing a European Chemicals Agency, amending Di-

rective 1999/45/EC and repealing Council Regulation (EEC)

No. 793/93 and Commission Regulation (EC) No. 1488/94

as well as Council Directive 76/769/EEC and Commission

Directives 91/155/EEC, 93/67/EEC, 93/105/EC and2000/21/

EC (REACH) Directive)

The

IEC 60335-1

claims for a better resistance of household and

similar electrical appliances against heat and fire amongst others

the compliance with harder glow wire tests. Due to these tests

are not part of the standard terminal blocks certification,

PTR HARTMANN offers its PCB terminal blocks and pin strips

with special insulating materials which are optimized to this

household norm.

Further questions regarding to

IEC 60335-1

in our products can

be answered when contacting PTR HARTMANN’s sales

department.

www.ptr-hartmann.com/contact/back-office/

connection-technology/

Environment | Household Appliance

Our PCB terminal blocks and PCB multi-connectors comply with

the current versions of all applicable standards and regulations.

The following standards apply to VDE approval:

1. Screwable and screwless PCB terminal blocks

»

EN 60998-1

»

EN 60998-2-1

»

EN 60998-2-2

2. Scr

ewable and screwless PCB terminal blocks

»

EN 60947-7-4

3. Scr

ewable and screwless PCB multi-connectors

»

EN 61984.

In addition,

EN 60664-1

VDE 0110-1

are the cornerstones of

insulation coordination for equipment used in low-voltage ins-

tallations. This applies to all equipment that is rated for use up

to 2.000 metres above sea level. Above 2.000 metres above sea

level, height correction factors come into play.

cURus approval of PTR HARTMANN PCB terminal blocks, PCB mul-

ti-connectors and interface pin blocks is based on the standards

»

UL 1059

»

UL 1977

»

CSA 22.2 No. 158

The cURus mark indicates that our pr

oducts meet Canadian and

U.S. safety standards.

The CE mark, which is a European product safety mark for

specific types of products, was created mainly to provide EU

consumers with safe products. The CE mark is the

manufacturer’s

assurance that the product bearing the mark complies with

European directives. A product may only be placed on the

market in the EU if it meets the requirements of the applicable

EU directives, and if it has undergone a conformance procedure

in accordance with the applicable EU directives.

The CE mark on PTR HARTMANN’s products indicates that they

comply with the following EU directive:

»

2014/35/EG - certain voltage limits

»

2011/65/EU - ROHS2 dir

ective

»

(EG) 1907/2006 - REACH dir

ective

TECHNICAL ANNEX //

351

Approvals and Standards

352

TECHNICAL ANNEX

Specific wire sizes are approved for PCB terminal blocks in relati-

on to their current-carrying capacity – the higher the approved

rated current, the higher the maximum permissible rated wire

size. Testing institutes only accept “unprepared stripped wires”

for PCB terminal block approval purposes. If necessary, stranded

wires can first be drilled for easier insertion into the PCB

terminal block.

Approval can be granted for the use of stranded wires with

ferrules in connection with the approval of the relevant ter

minal devices or if approved by

EN 60947-7-4

The rated values for each PCB terminal block are indicated in

the “Ratings” table of the relevant PTR HARTMANN product

page.

The “Wire sizes” table lists the permitted wire sizes, inclu-

ding when stranded wires with ferrules are used.

Relationship between maximum Cross-Section and maximum

Connecting Capacity of PCB Terminal Blocks

max.

Wire Size

Connecting Capacity

mm²

AWG

mm²

AWG

0.05

0.08

0.05 - 0.08

0.14

0.05 - 0.08 - 0.14

0.20

0.08 - 0.14 - 0.20

0.34

0.14 - 0.20 - 0.34

0.50

0.20 - 0.34 - 0.50

0,75

0.34 - 0.50 - 0.75

1.00

0.50 - 0.75 -

1.00

1.50

0.75 - 1.00 -

1.50

2.50

1.00

1.50

2.50

4.00

1.50

2.50

- 4.00

6.00

2.50

- 4.00 - 6.00

10.00

4.00 - 6.00 - 10.0

16.00

6.00 - 10.0 -

16.0

Conversion Table - American Wire Gauge (AWG) to mm

AWG

mm²

AWG

Wire Diameter [mm]

Wire Size [

mm²]

SOLID

STRANDED

SOLID

STRANDED

FLEXIBLE

(30)

0.25

0.36

(0.05)

0.32

0.38

0.08

0.40

0.48

0.14

0.54

0.64

0.51

0.53

0.61

0.20

0.68

0.80

0.63

0.66

0.80

0.34

0.85

1.02

0.90

1.10

0.50

1.07

1.28

1.00

1.20

1.30

0,75

(17)

1.20

1.40

1.50

1.00

1.35

1.60

(1.30)

(15)

1.50

1.70

1.80

1.50

1.71

2.08

(2.10)

(13)

1.90

2.20

2.30

2.50

2.15

2.70

(3.30)

(11)

2.40

2.70

2.90

4.00

2.72

3.36

(5.30)

(9)

2.90

3.30

3.90

6.00

3.34

4.32

(8.30)

(7)

3.70

4.20

5.10

10.00

4.32

5.73

(13.30)

(5)

4.60

5.30

6.30

16.00

Tab. 2: Table 2 EN 60947-7-4

Tab. 1: Table 1 according to EN 60999-1

Rated Wire Sizes and Connectable Wire Sizes

TECHNICAL ANNEX //

353

The concept of overvoltage categories is used for equipment

energized directly from the low-voltage mains. A similar

concept can also be used for equipment connected to other

systems, for example telecommunication and data systems.

Equipment of Overvoltage Category I

is equipment for connection to circuits in which measures

are taken to limit transient overvoltages

to an

appropriately low level. These measures shall ensure that

the temporary overvoltages that could occur are sufficiently

limited so that their peak value does not exceed the

relevant rated impulse voltage of the following table

”Rated impulse voltage for equipment...”

Application:

»

Equipment containing electr

onic circuits protected to this

level. Unless the circuits are designed to take the

temporary overvoltages into account, equipment of

overvoltage category I cannot be directly connected to

the supply mains.

Equipment of Overvoltage Category II

is energy-consuming equipment to be supplied from the

fixed installation.

Application:

»

Appliances, portable tools and other household and

similar loads. If such equipment is subjected to special

equirements with regard to reliability and availability,

overvoltage category III applies.

Equipment of Overvoltage Category III

is equipment in fixed installations and for cases where the

reliability and the availability of the equipment are subject

to special requirements.

Application:

»

Switches in the fixed installation and equipment for

industrial use with permanent connection to the fixed

installation.

Equipment of Overvoltage Category IV

is for use at the origin of the installation.

Application:

»

Electricity meters and primary over

current protection

equipment.

short duration overvoltage of a few milliseconds or less, usually highly damped

PTR HARTMANN product-approval data is based on Overvoltage

Category III. Our sales staff will be pleased to provide you with

the voltages for other overvoltage categories / degrees of pollu-

tion (III/2 and II/2) in accordance with

EN 60664

, Part 1.

Overvoltage Categories I - IV

(in accordance with EN 60664-1:2007 / VDE 0110-1)

354

TECHNICAL ANNEX

POLLUTION DEGREES 1 UP TO 4

The environment determines the effect of pollution on the

insulation.

Small clearances can be bridged completely by solid

particles, dust and water and therefore minimum

clearances are specified, where pollution may be present in

the micro-environment. For the purpose of evaluating

creepage distances and clearances, the following four

degrees of pollution in the micro-environment are

established.

Pollution degree 1

No pollution or only dry, non-conductive pollution occurs.

The pollution has no influence.

Pollution degree 2

Only non-conductive pollution occurs except that occasio-

nally a temporary conductivity caused by condensation is to

be expected.

Pollution degree 3

Conductive pollution occurs or dry non-conductive

pollution occurs which becomes conductive due to

condensation which is to be expected.

Pollution degree 4

Continuous conductivity occurs due to conductive dust,

rain or wet conditions.

The dimensions for creepage distance cannot be specified

where permanently conductive pollution is present

(Pollution degree 4). For temporarily conductive pollution

(Pollution degree 3), the surface of the insulation may be

designed to avoid a continuous path of conductive

pollution, e.g. by means of ribs and grooves.

ATTENTION

: PTR HARTMANN’s approval data are based on pollution degree 3 at the approvals according to VDE sign.

INSULATION MATERIAL GROUPS

For the purposes of standards

EN 60664-1:2007 / VDE 0110-1

materials are classified into four groups according to their CTI

values. These values are determined in accordance with

EN 60112

using solution A. The groups are as follows:

»

Insulation materials gr

oup I

600

≤

CTI

»

Insulation materials gr

oup II

400

≤

CTI < 600

»

Insulation materials gr

oup IIIa

175

≤

CTI < 400

»

Insulation materials gr

oup IIIb

100

≤

CTI < 175

The proof tracking index (PTI) is used to verify the tracking

characteristics of materials. A material may be included in one of

these four groups on the basis that the PTI is not less than the

lower value specified for the group.

Pollution Degrees 1 up to 4/ Insulation Material Groups

(in accordance with EN 60664-1:2007 / VDE 0110-1)

TECHNICAL ANNEX //

355

Determination of Clearance and Creepage Distances

PTR HARTMANN’s terminals and connectors are approved

according to the underlying

EN 60998-1

and

61984-1

standards. Specification of the rated voltages is on the basis of

these standards.

In addition – as requested by many customers – operating

voltages and/or clearance and creepage distances for operating

voltages can be determined in accordance with the generally

applicable

EN 60664-1

. For the clearance distances, the required

nominal voltage and/or the rated surge voltage – whose

definition takes place in accordance with table F.1 – are the

decisive factor.

This is shown in table F.2 as a withstand/impulse voltage and –

depending on the degree of soiling and field conditions – is

used to determine the clearance.

For creepage, the rated voltage of the power supply system must

be defined according to table F.3a for single-phase systems, or

according to table F.3b for three-phase systems. In combination

with the degree of soiling and the insulation material group, the

voltage value specified in this way determines the minimum

creepage distance according to table F.4.

For approval according to

EN 60947-7-4

, the minimum values

for clearance and creepage distances are contained in

EN 60947-1

in table 13 (corresponds to table F.2) and table 15

(corresponds to table F.4).

Measurement of clearance and creepage distances is performed

under the following conditions:

»

The PCB terminal blocks must be fitted with the least

favourable conductor type and cr

oss-section in accordance

with the manufacturer‘s information or must be examined

without conductors, where this proves to be the least

favourable case.

»

The ends of the conductors must if necessary be stripped of

insulation to the corr

ect length in accordance with the

manufacturer‘s information

The procedure for measuring the clearance and creepage

distances is described in appendix G of

EN 60947-1

Corresponding tables see next pages.

Clearance is the shortest distance in air between two conductive

parts. Clearance shall be dimensioned to withstand the required

impulse withstand voltage, in accordance with table

“Clearances to withstand transient overvoltages”. For

equipment directly connected to the low-voltage mains, the

required impulse withstand voltage is the rated impulse voltage,

and can be found in the table titled “Rated impulse voltage for

equipment...,” according to application.

Larger clearances may be required due to mechanical influences

such as vibration or applied forces.

Inasmuch as the values indicated in the aforementioned tables

are applicable up to 2.000 meters above sea level, clearance for

greater heights must be calculated using the multiplication

factors in the “Altitude correction factors” table.

Creepage distance means the shortest distance along the

surface of a solid insulating material between two conductive

parts. The values of table “Creepage distances to avoid failure

due to tracking” are based upon existing data and are suitable

for the majority of applications.

The basis for the determination of a creepage distance is the

long-term r.m.s. value of the voltage existing across it. This

voltage is the working voltage, the rated insulation voltage or

the rated voltage.

The influence of the degrees of pollution in the micro-

environment on the dimensioning of creepage distances is taken

into account in table “Creepage distances to avoid failure due

to tracking”. Also keep in mind that different micro-

environment conditions can exist within the same equipment.

A creepage distance cannot be less than the associated

clearance so that the shortest creepage distance possible is

equal to the required clearance. However, there is no physical

relationship, other than this dimensional limitation, between

the minimum clearance in air and the minimum acceptable

creepage distance.

Clearance and Creepage Distances

(in accordance with EN 60664-1:2007 / VDE 0110-1)

356

TECHNICAL ANNEX

Norm Tables

CLEARANCES TO WITHSTAND TRANSIENT OVERVOLTAGES (TABLE F.2)

Required impulse

withstand voltage

Minimum clearances in air up to 2000 m above sea level

Case A

lnhomogeneous field

Case B

Homogeneous field

POLLUTION DEGREE

[kV]

1 [mm]

2 [mm]

3 [mm]

1 [mm]

2 [mm]

3 [mm]

0.33

0.01

0.2

0.8

0.01

0.2

0.8

0.40

0.02

0.50

0.04

0.60

0.06

0.80

0.10

1.0

0.15

1.2

0.25

0.2

1.5

0.5

0.3

2.0

1.0

0.45

2.5

1.5

0.60

3.0

2.0

0.80

4.0

3.0

1.2

5.0

4.0

1.5

6.0

5.5

2.0

8.0

3.0

10.0

11. 0

3.5

12.0

14.0

4.5

15.0

18.0

5.5

20.0

25.0

8.0

25.0

33.0

10.0

30.0

40.0

12.5

40.0

60.0

17. 0

50.0

22.0

60.0

90.0

27. 0

80.0

130.0

35.0

100.0

170.0

45.0

ALTITUDE CORRECTION FACTORS

ALTITUDE [m]

NORMAL BAROMETRIC PRESSURE [kPa]

MULTIPLICATION FACTOR FOR CLEARANCESN

2.000

80.0

1.00

3.000

70.0

1.14

4.000

62.0

1.29

5.000

54.0

1.48

6.000

47. 0

1.70

7.000

41.0

1.95

8.000

35.5

2.25

9.000

30.5

2.62

10.000

26.5

3.02

15.000

12.0

6.67

20.000

5.5

14.50

RATED IMPULSE VOLTAGE FOR EQUIPMENT ENERGIZED DIRECTLY FROM THE LOW-VOLTAGE MAINS (TABLE F.1)

Nominal voltage of the supply system

based on IEC 50038

Voltage line to

neutral derived from nominal

voltages a.c. or d.c. up to and

including

Rated impulse voltage

Overvoltage category

THREE PHASE [V]

SINGLE PHASE [V]

[V]

III

[V]

330

500

800

1.500

100

500

800

150 0

2.500

120-240

150

800

1.500

2.500

4.000

230/400 277/480

300

1.500

2.500

4.000

6.000

400/690

600

2.500

4.000

6.000

8.000

1000

1.000

4.000

6.000

8.000

12.000

TECHNICAL ANNEX //

357

SINGLE-PHASE THREE OR TWO-WIRE AC OR DC SYSTEMS

(TABLE F.3A)

Nominal voltage of the

supply system (Net)

For insulation

line-to-line

For insulation

line-to-earth

[V]

All systems

[V]

Three-wire systems

mid-point earthed

[V]

12,5

24 / 25

42 / 48 / 50

100

110 / 120

125

150

160

200

100

200

100

220

250

110

220 / 120

240

250

125

300

320

220

500

250

600

630

480

960

1 000

500

1000

1 000

THREE-PHASE FOUR OR THREE-WIRE AC SYSTEMS (TABLE F.3B)

Nominal voltage

of the supply

system (Net)

For insulation

line-to-line

For insulation

line-to-earth

[V]

All Systems

[V]

Three-phase four -wire

systems neutral-earthed

[V]

Three-phase -wire

systems

[V]

110 / 120 / 127

125

150

160

200

208

200

125

200

220 / 230 / 240

250

160

250

300

320

380 / 400 / 415

400

250

400

440

500

250

500

480 / 500

500

320

500

575

630

400

630

600

630

660 / 690

630

400

630

720 / 830

800

500

800

960

1 000

630

1 000

1000

000

CREEPAGE DISTANCES TO AVOID FAILURE DUE TO TRACKING (TABLE F.4)

Voltage r.m.s.

Minimum creepage distances

Printed wiring material

POLLUTION DEGREE

All material

groups

[mm]

All material

groups except

IIIb [mm]

All material

groups

[mm]

Material

group I

[mm]

Material

group II

[mm]

Material

group III

[mm]

Material

group I

[mm]

Material

group II

[mm]

Material

group III

[mm]

10.0

0.025

0.040

0.080

0.400

1.000

12.5

0.025

0.040

0.090

0.420

1.050

16.0

0.025

0.040

0.10 0

0.450

1.10 0

20.0

0.025

0.040

0 .110

0.480

1.200

25.0

0.025

0.040

0.125

0.500

1.250

32.0

0.025

0.040

0.14

0.53

1.30

40.0

0.025

0.040

0.16

0.56

0.80

1.10

1.40

1.60

1.80

50.0

0.025

0.040

0.18

0.60

0.85

1.20

1.50

1.70

1.90

63.0

0.040

0.063

0.20

0.63

0.90

1.25

1.60

1.80

2.00

80.0

0.063

0.10 0

0.22

0.67

0.95

1.30

1.70

1.90

2.10

100.0

0.10 0

0.16 0

0.25

0.71

1.00

1.40

1.80

2.00

2.20

125.0

0.16 0

0.250

0.28

0.75

1.05

1.50

1.90

2.10

2.40

160.0

0.250

0.400

0.32

0.80

1.10

1.60

2.00

2.20

2.50

200.0

0.400

0.630

0.42

1.00

1.40

2.00

2.50

2.80

3.20

250.0

0.560

1.000

0.56

1.25

1.80

2.50

3.20

3.60

4.00

320.0

0.75

1.60

0.75

1.60

2.20

3.20

4.00

4.50

5.00

400.0

1.0

2.0

1.0

2.0

2.8

4.0

5.0

5.6

6.3

500.0

1.3

2.5

1.3

2.5

3.6

5.0

6.3

7.1

8.0

630.0

1.8

3.2

1.8

3.2

4.5

6.3

8.0

9.0

10.0

800.0

2.4

4.0

2.4

4.0

5.6

8.0

10.0

11. 0

12.5

1.000

3.2

5.0

3.2

5.0

7.1

10.0

12.5

14.0

16.0

1.250

4.2

6.3

9.0

12.5

16.0

18.0

20.0

1.600

5.6

8.0

11. 0

16.0

20.0

22.0

25.0

2.000

7.5

10.0

14.0

20.0

25.0

28.0

32.0

2.500

10.0

12.5

18.0

25.0

32.0

36.0

40.0

358

TECHNICAL ANNEX

Current-carrying capacity indicates whether an electromechanical

component such as a PTR HARTMANN PCB terminal block or PCB

multi-connectors exhibits any functional anomalies or sustains any

thermal damage under a specific rated current load and the relevant

ambient temperature.

The component temperature should be measured as close as possible

to the component that exhibits the highest temperature. It should

also be considered that, when in operation, the PCB terminal blocks

or PCB multi-connectors are affected by heat dissipation from nearby

additional heat sources and/or heat conduction via the circuits. Unless

otherwise indicated, the current values stated for PTR HARTMANN

products refer to an ambient temperature of 60°C (T60).

The terminal block standard

EN 60998-1

, the multi-connector

standard

EN 61984

and the

EN 60947-7-4

(Low-voltage switchgear

and control-gear) contain various definitions in accordance with the

upper temperature limit of insulation materials, which for PTR

HARTMANN products is 105°C. For PCB multi-connectors PTR

HARTMANN uses in this context derating curves (in accordance with

EN 60512-5-2

and

EN 60947-7-4

) to show on a basis of the

maximum number of poles for the various wire sizes the performance

of the current in correlation to the ambient temperature. The

allowable operating range is determined using a reduction factor of

0.8 in respect to the value of the current in the basic curve.

CURRENT-CARRYING CAPACITY

TIGHTENING TORQUES FOR TERMINAL SCREWS

EN 60999-1

and

EN 60947-1

defines tightening torques for electrical

fastening materials which ensure that the wiring of electrical

terminals is safe (see Tab. 1). The PTR HARTMANN PCB terminal

blocks and PCB multi-connectors of course completely fulfil this

demands.

TIGHTENING TORQUES FOR PROVING MECHANICAL RESISTANCET FOR

SCREW CONNECTIONS / SCREW TERMINAL BLOCKS

Thread Diameter [mm]

Tightening Torque [Nm]

Metric Standard

Diameter Range

III

1.6

≤

1.6

0.05

0.10

2.0

> 1.6 up to 2.0

0.10

0.20

2.5

> 2.0 up to 2.8

0.20

0.40

3.0

> 2.8 up to 3.0

0.25

0.50

> 3.0 up to 3.2

0.30

0.60

3.5

> 3.2 up to 3.6

0.40

0.80

4.0

> 3.6 up to 4.1

0.70

1.20

4.5

> 4.1 up to 4.7

0.80

1.80

5.0

> 4.7 up to 5.3

0.80

2.00

6.0

> 5.3 up to 6.0

1.20

2.50

3.00

8.0

> 6.0 up to 8.0

2.50

3.50

6.00

10.0

> 8.0 up to 10.0

4.00

10.00

12.0

> 10.0 up to 12.0

14.00

14.0

> 12.0 up to 15.0

19.00

16.0

> 15.0 up to 20.0

25.00

20.0

> 20.0 up to 24.0

36.00

24.0

> 4.0

50.00

Tab. 1: Table 4 to EN 60947-1

Current-Carrying Capacity | Tightening Torques for Terminal Screws

TECHNICAL ANNEX //

359

Metallic Materials

PTR HARTMANN PCB terminal blocks and PCB multi-connectors

are made using only high quality metals. The use of various

copper alloys, as well as bronze, stainless steel and specially

surface-treated steel elements guarantees reliable contacts and

minimizes corrosion.

Surface Coatings

Surface coatings on various metallic materials prevent corrosion

and wear, and optimize conductivity. The surface coatings used

by PTR HARTMANN comply with the EU’s RoHS and WEEE

directives.

Tinning

All of our copper electrical contacts are tinned as a matter of

course. The tin surface of solder contacts creates an excellent

bond with standard solder material.

A protective nickel barrier layer is applied prior to tinning to

avoid any solderability loss by diffusion of the base material in

the tin coating.

Gold Plating

Gold’s excellent electrical properties make it an ideal surface

coating for PCB multi-connectors that are used for low current

and low voltage applications. Our gold plating thicknesses are

0.6-0.8 μm. Thinner or thicker gold plating is available by special

order.

Plastic

PTR HARTMANN uses only insulating materials of tried and

proven quality for insulation of live components – because PCB

terminal blocks and PCB multi-connectors are required to meet

very high standards when in service. For this reason, PTR

HARTMANN uses for its insulating enclosures only PA6.6 and

PPA polyamides, and PBT or LCP materials listed by the

Underwriters Laboratories (UL). All insulating plastics conform

inter alia to the maximum Classification V-0 fire-safety

requirements of the UL 94 standard. In some cases, the

materials used – and those for use in pin strips and reflow-

soldered products, in particular – are glass-fibre-reinforced, in

order to boost their mechanical strength and thermal stability.

Materials and Surfaces

360

TECHNICAL ANNEX

High-vibration applications call for additional measures to prevent

PCB terminal blocks from coming loose from pin strips. Many PTR

HARTMANN PCB multi-connectors integrate flanges, whereby screws

are mounted on both sides of the PCB terminal block and screw

sockets are mounted on both sides of the pin strip. Screwing these two

elements together after the PCB terminal block is inserted in the pin strip

guarantees that the PCB terminal block will remain in place

max. torque = 30.0 Ncm.

PRODUCTS WITH FLANGES

Many PTR HARTMANN products incorporate a test jack, which allows for

(a) convenient realization of measurements for maintenance or

troubleshooting purposes, without the need to remove wiring; and (b)

continuous monitoring of process- related values.

Depending on the size of the test hole, readings can be taken using a PTR

HARTMANN test probe or with a conventional meter.

TENSION PLATES

Tension plates make it easier to unplug PCB terminal blocks from pin

strips. They comprise the contact face and mounting surface for

connected wires and help to reduce mechanical stress exerted on

clamping points resulting from long wires etc.

On the AK1350/..DSL, the tension plate also has the function of a

disconnection aid.

INTEGRATED TEST JACKS

Products with Flanges | Tension Plates / Integrated Test Jacks

TECHNICAL ANNEX //

361

With PCB multi-connectors, plugging a PCB terminal block into the

wrong pin strip will immediately result in a malfunction or even in dest

ruction of the entire circuit board. This is why PTR HARTMANN has a very

ide range of coding solutions for many of its PCB multi-connectors. The

“-CP” coding pin’s coding uses holes in the circuit board, and when they

are correctly inserted, the PCB terminal block coding pins fit into these

holes.(see fig 1).

Protection against incorrect plugging is possible in two ways using coding

stars (CS accessory).

»

If both connector parts – PCB terminal block and pin strip – are coded,

a coded pole in the PCB terminal block must mate with an uncoded

pole on the pin strip so that the terminal can be inserted (see fig 2).

»

If a pole on the pin strip is coded, it must fit into a PCB terminal block

pole whose coding nose has been removed so that the terminal can be

connected (see fig 3).

PTR HARTMANN realizes terminal bridging in two different

ways. External bridging is realized via the non-insulated (BR) or

insulated (BRI) bridging elements that are used as accessories for

various types of

PCB

terminal blocks and that are simply inserted

into the wire entry, where they are fastened in place by a screw

or spring.

We recommend the AK130-BR, AK350-BR or AK700-BR series

for the realization of a potential across multiple poles. These

three products integrate an internal conductive metal element

that passes all the way through, which also allows for a wire

connection in the clamp area.

TERMINAL BRIDGING

CODING

Fig 1

Fig 2

Fig 3

Terminal Bridging | Coding

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