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
r
egulations.
348
//
TECHNICAL APPENDIX
TECHNICAL APPENDIX //
349
5
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
5
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
30
0.05
30
0.08
28
0.05 - 0.08
30
-
28
0.14
26
0.05 - 0.08 - 0.14
30
-
28
-
26
0.20
24
0.08 - 0.14 - 0.20
28
-
26
-
24
0.34
22
0.14 - 0.20 - 0.34
26
-
24
-
22
0.50
20
0.20 - 0.34 - 0.50
24
-
22
-
20
0,75
18
0.34 - 0.50 - 0.75
22
-
20
-
18
1.00
-
0.50 - 0.75 -
1.00
-
1.50
16
0.75 - 1.00 -
1.50
20
-
18
-
16
2.50
14
1.00
-
1.50
-
2.50
18
-
16
-
14
4.00
12
1.50
-
2.50
- 4.00
16
-
14
-
12
6.00
10
2.50
- 4.00 - 6.00
14
-
12
-
10
10.00
8
4.00 - 6.00 - 10.0
12
-
10
-
8
16.00
6
6.00 - 10.0 -
16.0
10
-
8
-
6
Conversion Table - American Wire Gauge (AWG) to mm
2
AWG
mm²
AWG
Wire Diameter [mm]
Wire Diameter [mm]
Wire Size [
mm²]
SOLID
STRANDED
SOLID
STRANDED
FLEXIBLE
(30)
-
-
0.25
-
0.36
(0.05)
28
-
-
0.32
-
0.38
0.08
26
-
-
0.40
-
0.48
0.14
24
0.54
0.64
0.51
0.53
0.61
0.20
22
0.68
0.80
0.63
0.66
0.80
0.34
20
0.85
1.02
0.90
1.10
1.10
0.50
18
1.07
1.28
1.00
1.20
1.30
0,75
(17)
-
-
1.20
1.40
1.50
1.00
16
1.35
1.60
-
-
-
(1.30)
(15)
-
-
1.50
1.70
1.80
1.50
14
1.71
2.08
-
-
-
(2.10)
(13)
-
-
1.90
2.20
2.30
2.50
12
2.15
2.70
-
-
-
(3.30)
(11)
-
-
2.40
2.70
2.90
4.00
10
2.72
3.36
-
-
-
(5.30)
(9)
-
-
2.90
3.30
3.90
6.00
8
3.34
4.32
-
-
-
(8.30)
(7)
-
-
3.70
4.20
5.10
10.00
6
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
1
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
r
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.
1
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)
5
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)
5
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
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
0.02
0.50
0.04
0.04
0.60
0.06
0.06
0.80
0.10
0.10
1.0
0.15
0.15
1.2
0.25
0.25
0.2
1.5
0.5
0.5
0.3
0.3
2.0
1.0
1.0
1.0
0.45
0.45
2.5
1.5
1.5
1.5
0.60
0.60
3.0
2.0
2.0
2.0
0.80
0.80
4.0
3.0
3.0
3.0
1.2
1.2
1.2
5.0
4.0
4.0
4.0
1.5
1.5
1.5
6.0
5.5
5.5
5.5
2.0
2.0
2.0
8.0
8.0
8.0
8.0
3.0
3.0
3.0
10.0
11. 0
11
11
3.5
3.5
3.5
12.0
14.0
14
14
4.5
4.5
4.5
15.0
18.0
18
18
5.5
5.5
5.5
20.0
25.0
25
25
8.0
8.0
8.0
25.0
33.0
33.0
33.0
10.0
10.0
10
30.0
40.0
40.0
40.0
12.5
12.5
12.5
40.0
60.0
60.0
60.0
17. 0
17. 0
17
50.0
75
75
75
22.0
22.0
22
60.0
90.0
90.0
90.0
27. 0
27. 0
27
80.0
130.0
130.0
130.0
35.0
35.0
35
100.0
170.0
170.0
170.0
45.0
45.0
45
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]
I
[V]
II
[V]
III
[V]
IV
[V]
50
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
12,5
24 / 25
25
30
32
42 / 48 / 50
50
60
63
30
-
6
0
63
32
100
100
110 / 120
125
150
160
200
200
100
-
2
00
200
100
220
250
110
-
220 / 120
-
240
250
125
300
320
220
-
4
40
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]
60
63
32
63
110 / 120 / 127
125
80
125
150
160
-
16
0
200
200
200
208
200
125
200
220 / 230 / 240
250
160
250
300
320
-
32
0
380 / 400 / 415
400
250
400
440
500
250
500
480 / 500
500
320
500
575
630
400
630
600
630
-
63
0
660 / 690
630
400
630
720 / 830
800
500
800
960
1 000
630
1 000
1 000
1000
-
1
000
CREEPAGE DISTANCES TO AVOID FAILURE DUE TO TRACKING (TABLE F.4)
Voltage r.m.s.
Minimum creepage distances
Printed wiring material
POLLUTION DEGREE
1
2
1
2
3
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
0.400
0.400
1.000
1.000
1.000
12.5
0.025
0.040
0.090
0.420
0.420
0.420
1.050
1.050
1.050
16.0
0.025
0.040
0.10 0
0.450
0.450
0.450
1.10 0
1.10 0
1.10 0
20.0
0.025
0.040
0 .110
0.480
0.480
0.480
1.200
1.200
1.200
25.0
0.025
0.040
0.125
0.500
0.500
0.500
1.250
1.250
1.250
32.0
0.025
0.040
0.14
0.53
0.53
0.53
1.30
1.30
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
5
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
I
II
III
1.6
≤
1.6
0.05
0.10
0.10
2.0
> 1.6 up to 2.0
0.10
0.20
0.20
2.5
> 2.0 up to 2.8
0.20
0.40
0.40
3.0
> 2.8 up to 3.0
0.25
0.50
0.50
-
> 3.0 up to 3.2
0.30
0.60
0.60
3.5
> 3.2 up to 3.6
0.40
0.80
0.80
4.0
> 3.6 up to 4.1
0.70
1.20
1.20
4.5
> 4.1 up to 4.7
0.80
1.80
1.80
5.0
> 4.7 up to 5.3
0.80
2.00
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
5
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
w
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
5
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