Eurotherm 7000 Series User manual

Power
Thyristor Units
User Manual
ε
ε
72007200AA
ENG Two phase
load control

i
7200AADVANCED CONTROLLERS
THYRISTOR UNITS
CONTROLLING TWO PHASES
OF A THREE-PHASE LOAD
7000 SERIES
USER MANUAL
©Copyright Eurotherm Automation 2004
All rights reserved. All reproduction or transmission in any form whatsoever and using any procedure
(electronic or mechanical, including photocopying and recording) without written permission from
Eurotherm is strictly prohibited
Réf : HA176821 ENG - Issue 3.0 - 03/2009

7200A User Manual
ii
Check characteritics
Wiring
Check Firing
Adjust DLF alarm
(if conditionds met) Bouton-poussoir CHK/SET
Characteristics correspond
to product code Page 1-8
Page 2-7
Chapter 3
Alarms signal Chapter 4
Chapter 4
Mounting DIN Rail Page 2-3
Bulkhead Mounting Page 2-4
Power
Control Page 2-8,2-9,2-10
Diagnostic Alarm
Maintenance Chapter 5
Thyristor Protection fuses Chapter 5
Applying the control signal Page 2-9
ANA terminal Block
Auxiliary Power Supply Page 2-10
If External Power Supply
(for electonics od/and fan)
COMMISSIONING FLOWCHART

7200A User Manual iii
Contents
CONTENTS
Page
Commissioning flowchart ............................ii
European Directives and applicable standards .......iv
Chapter 1 Identification of power thyristor units . . . . . .1-1
Chapter 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Chapter 3 Firing modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Chapter 4 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Chapter 5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Index .........................................6-1
Eurotherm worlwide sales and services .............7-1
PURPOSE OF MANUAL
This manual ( Issue 3.0 )describes the Basic Version and all Options
for 7200A series three-phase power thyristor units.
Eurotherm’s policy of continuous product improvement and developement means that the specifications in this
document may be modified without prior notice.

EMC GUIDE
To help you deal with installation-dependent electromagnetic interference effects,Eurotherm
provides an ‘Electromagnetic compatibility’ installation guide (ref. HA 025464 ENG) which
sets out best current practice regarding EMC.
CE CONFORMITY DECLARATION is available on request.
EMISSIONS
The EMC emissions test standards required by the standard EN 60947-4-3
‘Contactors and motor-starters - AC semiconductor motor controllers and contactors for
non-motor loads’ are presented in table 2.
Emission type Firing mode Test standard
Radiated at radio frequencies All firing CISPR 11 modes Class A
Conducted at radiofrequencies ‘Burst mode’ and ‘Single-cycle’ CISPR 11 Class A group 2
Table 2. EMC emissions standards compliance
7200A User Manual
iv
EUROPEAN DIRECTIVES AND APPLICABLE STANDARDS
COMPLIANCE WITH PRODUCT STANDARD
7200A products comply with the terms of product standard EN 60947-4-3
‘Contactors and motor-starters - AC semiconductor controllers and contactors for non-motor loads’.
CE LABELLING
7200A products installed and used in accordance with the user manual, bear CE labelling on
the basis of compliance with the essential requirements of the European Low Voltage
Directive 73/23 EEC dated 19 February 1973, modified by 93/68/EEC dated 22 July 1993 and
the Electromagnetic Compatibility Directive 89/336/EEC dated 3 May 1989 modified by
92/31/EEC dated 28 April 1992 and 93/68/EEC dated 22 July 1993.
SAFETY
The units have IP20 protection rating as defined by standard IEC 60529.
External wiring must comply with standards IEC 60364-4-43 and IEC 60943.
Copper cables and conductors must be used, rated to a temperature of 75°C (167°F).
ELECTROMAGNETIC COMPATIBILITY (EMC)
7200A products installed and used in accordance with the user manual, are designed for an
industrial environment and must not be used in the home.
IMMUNITY
The EMC immunity test standards required by the standard EN 60947-4-3
‘Contactors and motor-starters - AC semiconductor motor controllers and contactors for
non-motor loads’ are presented in table 1.
European directives and applicable standards
Table 1. EMC immunity standards compliance
Test type Minimum levels EMC test standard
Electrostatic discharge 4 kV on contact; 8 kV in air EN 61000-4-2
Radiated, radio frequency 10 V/m 80 MHz ≤f≤1GHz;
electromagnetic field 80% modulation 1 kHz sinusoidal EN 61000-4-3
Electrical fast transient / burst 2 kV / 5 kHz EN 61000-4-4
Electrical surge 4 kV line to earth;
2 kV line to line EN 61000-4-5
Conducted disturbances 140 dBµV; 150 kHz ≤f≤80 MHz EN 61000-4-6
Voltage dips, short interruptions
and voltage variation 5 s interruptions EN 61000-4-11

7200A User Manual 1-1
Identification
1. Chapter 1
POWER THYRISTOR UNIT IDENTIFICATION
Contents Page
1.1. General presentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
1.2. Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
1.2.1. Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
1.2.2. Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
1.2.3. Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
1.2.4. Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
1.2.5. Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
1.2.6. Firing modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
1.2.7. Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
1.2.8. Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
1.2.9. Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
1.2.10. Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
1.2.11. Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
1.2.12. Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
1.3. Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

Identification
7200A User Manual
1-2
1. Chapter 1 IDENTIFICATION
1.1. GENERAL PRESENTATION
A7200A series thyristor unit comprise of two channel, controlled by thyristors.
7200A series thyristor units are used to control the electrical power of three-phase
industrial loads ; such as :
Low coefficient resistive loads
Short wave infrared elements for units with a rating ≤100 A
Current ratings vary from 16 A to 200 A (per phase), at line-to-line voltages from 200 V to 500 V
GRF
DLF CHK
ON
HEAT
SET
7200
A
EUROTHERM
PE
3/L2
4/T2
2/T1
1/L1
ε
5/L3
6/T3
Protective earth
terminal
Power terminals
(supply side)
Ratings
nominal current from 16 A to 200 A
nominal voltage from 200 V to 500 V
Power terminals
(load side)
Load type : three phase industrial loads
AC-51 resistive load with low temperature coefficient
AC-55b Short Wave infrared elements
Load configuration : Independant of phase rotation order
Star without neutral, closed delta
Internal
power wiring
diagram
Control terminal pinouts
Analogue Control Type :
0 mA to 20 mA ; 4 mA to 20 mA
0 V to 5 V ; 0 V to 10 V
User labelling
Electronics supply
115 V or 230 V
Thyristor firing request
Zero crossing Firing :
• Burst Mode 16 or 64 cycles
•Single cycle
DLF Diagnostic alarm
Partial Load Failure
detection
63 A / 500 V
EN 60947-4-3
Control connector
CHK/SET push button :
• Setting request
• Diagnostic
• Disabling
ALR
1a 1b
73 74
A/F
230 N
16 17 18
ANA
0VA RI 5VA
31 32 33
Alarm relay terminal pinouts
Relay contact :
0.25 A / 230 Vac ; 32 Vdc
Open or closed on alarm
depending on product code
GRF serious alarm :
Total load failure and
thyristor short circuit
detection
Figure 1-1 General view of a 7200A power unit ratings from 16 A to 63 A

7200A User Manual 1-3
Identification
GRF
DLF CHK
ON
HEAT
SET
7200A
EUROTHERM
PE
3/L2
4/T2
2/T1
1/L1
ε
5/L3
6/T3
80A / 500 V
EN 60947-4-3
ALR
1a 1b
73 74
Aux1
230 N
16 17 18
Protective earth
terminal
Power terminals
(supply)
Power terminals
(load)
Internal
power wiring
diagram
Control terminal
pinouts
Electronics supply
Zero crossing firing mode :
Firing request LED
DLF option :
Diagnostic alarm
Control connector
ANA
0VA RI 5VA
31 32 33
Figure 1-2 General view of a 7200A power unit ratings from 80 A to 100 A

Identification
7200A User Manual
1-4
Figure 1-3 General view of a 7200A power unit ≥ 125 A rating

7200A User Manual 1-5
Identification
1.2. TECHNICAL SPECIFICATIONS
1.2.1 Use Thyristor unit, variant 4 (see Standard EN 60947-4-3)
for uninterrupted service.
1.2.2. Power
Nominal current per phase 16 A to 200 A at 45 °C ( see product code)
Nominal line to line voltage 200 V to 500 V (see code).
Frequency Use from 47 to 63 Hz (automatic matching)
Dissipated power 1,3 W (approx.) per amp and per phase
Cooling Ratings ≤100 A : Natural convection
Ratings ≥125 A : Fan-cooled.
115 V or 230 V ; consumption 10 VA.
1.2.3. Load Industrial three-phase load, three-wire configuration.
Categories of use The categories of use applicable for each unit are indicated
on the identification label.
•AC-51 Non-inductive or low inductance loads, furnace resistances.
(resistive load with low temperature coefficient)
• AC-55b Switching of incandescent lamps
(Short wave infrared elements, SWIR) for ≤100 A units
Options must be fitted to 7200A units in order to comply
with certain categories of use.
Load configuration Independant of phase rotation order
Star without neutral, closed delta. (Configuration on order)
1.2.4. Dimensions
1.2.5. Command
Supply Self-powered from line or external power supply
(115 V or 230 V +10%; -15%, see code). Consumption : 10 VA
Command type Analogue
•Either remote analogue setpoint :
0-5V or 0-10V (100 kΩinput)
0-20mA or 4-20mA (250 Ωi/p)
•or manual setpoint (potentiometer) : 0-5V (2 mA max).
Rating Height Width Depth (mm)
Basic DLF
16 A à 63 A 220 mm 96 mm 214 264
80 A à 100 A 305 mm 144 mm 372 372
125 A à 200 A 495 mm 144 mm 372 372

Identification
7200A User Manual
1-6
1.2.6. Firing modes
Zero crossing firing • ‘Burst mode’, base time : 16 or 64 cycles
• ‘Single-cycle’, base time : 1 cycle
1.2.7. Control
Parameters • Standard (on balanced three-phase supply) :
Load voltage squared (V2)
Linearity and Stability
Better than ±2% of full scale
( on balanced three-phase supply )
1.2.8. Indication Electronic supply present Green ‘ON’ LED and
supply fault detection : ‘ON LED flashing’
Thyristor firing request : Green ‘HEAT’ LED
1.2.9. ALARMS
Serious alarms (GRF)Total load failure and thyristor short circuit detection.
(if DLF Option)
Signalling Red ‘GRF’ LED and alarm relay contact
Diagnostic alarm (DLF)
Partial Load Falure detection.
Signalling Orange ‘DLF LED and alarm relay contact’.
Settings Monitoring diagnosis, alarm adjustment and resetting
using push button on front pannel.
Sensitivity Detects the failure of at least one heating element for
several identical elements, connected in parallel.
Extension The DLF option includes Serious alarm monitoring (GRF)
Partial Load Failure detection for SWIR loads is only
avalable when using FC1 Burst firing mode
Over-temperature alarm For all fan-cooled units (≥125 A, available later),
the unit cuts out if the temperature threshold is exceeded.
Signalling Red ‘T °’ LED Alarm relay contact with any alarm.
Alarm relay Available with DLF option.
The relay contact (0,25 A/230 Vac; 32 Vdc) is
either open on alarm or closed on alarm
depending on the product code.
Load
Firing confuguration 3D 3S
mode
FC1 1/2 1/3
C16, C64 1/3 1/4

7200A User Manual 1-7
Identification
1.2.10. Protection
Co-ordination type For short circuits.
Electrical protection IP20 without adding additional protection.
Thyristors Varistor and RC snubber.
Quick-acting three-phase fuses :
• rating ≤100 A : external (order separately)
• rating ≥125 A : internal.
No fuse for short wave infrared elements
1.2.11. Mounting
Mounting Attachment plate fixed to unit :
• On symmetrical EN50022 DIN rail or
• bulkhead mounting
(for ratings ≥80 A : bulkhead mounting only).
1.2.12. Environment
Use From 0 to 45 °C at nominal current, max. altitude 1000 m
Storage From -10 °C to 70 °C.
Isolation voltage Assigned isolation voltage Vi = 500 V.
Pollution
Degree 2 acceptable (as defined by IEC 60664).
Humidity RH from 5% to 95% non-condensing, non-streaming.
Over-Voltage Over-voltage category II (as defined by IEC 60664)
Eurotherm’s policy of continuous product improvement and development means that the specifications in this document
may be modified without prior notice.

Identification
7200A User Manual
1-8
13. Alarm relay contact Code
With DLF otpion: closed on alarm NC
open on alarm NO
Without DLF option XX
Control and Alarms options
12. Load Type Code
With DLF Option:
Short Infrared (witn FC1 only) SWIR
Low temperature coefficientloads LTCL
Without DLF option XXXX
11. Type 1 Alarms Code
Partial Load Failure and DLF
Serious Alarms
No Alarms NONE
1. Nominal current per phase Code
16 amps 16A
25 amps 25A
40 amps 40A
63 amps 63A
80 amps 80A
100 amps 100A
125 amps 125A
160 amps 160A
200 amps 200A
5. Load configuration Code
Star without neutral 3S
Closed delta 3D
2. Nominal line to line voltage Code
200 volts 200V
230 volts 230V
277 volts 277V
400 volts 400V
460 volts 460V
480 volts 480V
500 volts 500V
Ratings
3. Power supply for electronics Code
Self-powered SELF
External 115 V supply 115V
External 230 V supply 230V
4. Fan power supply Code
≤100A: No fan XXXX
≥125A: - 115 V fan and 115V
-230 V fan and 230V
Basic Selection Certification et warranty extension
15. Certification Code
Without certificate NONE
With certificate CFMC
16. Warranty extension Code
Without warranty extension NONE
Warranty extended to 5 years WL005
1.3. Codification
6. Thyristor fuses Code
Fuses without fuse blown microswitch FUSE
Fuses with fuse blown microswitch MSFU
Without fuses (SWIR) NONE
9. Manual language Code
French FRA
English ENG
German * GER
10. Selected options Code
Without options: V2control and NONE
End of code
With options:
Selection of options YES
7. Firing mode Code
‘Burst mode’:
base time 16 cycles C16
base time 64 cycles C64
‘Single-cycle’: base time 1 cycle FC1
8. Input Code
Analogue signal :
current from 0 mA to 20 mA 0mA20
current from 4 mA to 20 mA 4mA20
voltage from 0 V to 5 V 0V5
voltage from 0 V to 10 V 0V10
14. NONE

7200A User Manual 2-1
Installation
2. Chapter 2
INSTALLATION
Contents Page
2.1. Safety during installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.2. Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.2.1. Types of mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.2.2. Attachement plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.2.3. Mounting on DIN rails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.2.4. Bulkhead mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2.3. Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
2.3.1. General connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
2.3.2. Power connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
2.3.2.1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
2.3.2.2. Three-phase load configuration diagram . . . . . . . . .2-7
2.3.3. Control connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
2.3.3.1. Control terminal blocks . . . . . . . . . . . . . . . . . . . . . . . .2-8
2.3.3.2. Control signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
2.4. Alarm relay contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
2.5. External power supply terminal block . . . . . . . . . . . . . . . . . . . . . .2-10
2.5.1. Power supply for electronics . . . . . . . . . . . . . . . . . . . . . . . . . .2-10
2.5.2. Power supply for the fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10
2.5.3. Power supply for electronics and fan . . . . . . . . . . . . . . . . . . .2-11

Installation
7200A User Manual
2-2
2. Chapter 2 INSTALLATION
2.1. SAFETY DURING INSTALLATION (MOUNTING AND WIRING)
Danger!
•7200A power thyristor units must be installed and wired by qualified staff
authorised to work on low voltage industrial electrical facilities.
• Units must be installed in a fan-cooled cabinet, to ensure that condensation and
pollution are excluded, with a class of at least 2 according to IEC 60664.
We recommend fitting fan-cooled cabinets with a fan failure detection device or
a thermal safety cut-out.
The cabinet must be closed and connected to the protective earth according to
IEC 60364 or applicable national standards.
Important!
•Units must be mounted with the heatsink positioned vertically, and with no obs-
tructions above or below the unit which could reduce or hamper air flow.
If several units are fitted in the same cabinet, arrange them such that air from one
unit is not drawn in by the unit above.
The ambient temperature beneath the unit must not exceed 45°C.
Leave a gap of at least 10 mm between adjacent units.
Important!
•Nominal currents correspond to use at ambient temperatures of no more than
45°C.
Overheating may cause incorrect operation and may even lead to compo-
nents being damaged.
Danger!
•It is the user’s responsibility to wire and protect the facility according to best
practice and applicable standards.
A suitable device, ensuring that the unit can be electrically isolated from the sup-
ply, must be installed upline to enable work to be performed safely.
Conductor cross-sections should comply with IEC 60943.
Only use copper cables and wires rated for use at 75 °C.
•Before connecting or disconnecting the unit check that power and control cables
and leads are isolated from voltage sources.
The protective earth must be connected before any other connections are made
and should be the last cable to be disconnected.
The protective earth connection terminal is marked with the symbol:
Toensure the electrical safety and the earth protection continuity, the front
pannel screws must be screwed in correctly to the coupling torque of 0.5 Nm
Important!
•To ensure that 7200A power thyristor units comply with Electromagnetic
Compatibility requirements, ensure that the panel or DIN rail to which they are
attached is correctly grounded.
The ground connection, designed to ensure ground continuity,is not in anyway
asubstitute for the protective earth connection.
!!
!!
!!

7200A User Manual 2-3
Installation
2.2. MOUNTING
2.2.1. TYPES OF MOUNTING
•DIN rail mounting and bulkhead mounting - 16 A to 63 A only
• Bulkhead mounting with screws ≥80 A
DIN rail mounting (≤63 A only) Bulkhead mounting
Attachment plate DIN rail Attachment plate Screws
Two horizontal Two symmetrical Two horizontal 4 ×M4 (≤63 A)
plates rails EN 50022 plates 4 x M6 (≥80 A)
2.2.2. ATTACHMENT PLATES
Two factory-fitted attachment plates on the rear of the 7200A thyristor units are used:
• to clip the unit to a DIN rail, or
• to screw the unit to a bulkhead.
Each attachment plate has: • attachment holes for bulkhead mounting, and
•two fixed hooks and two mobile hooks for clipping to a DIN rail.
(the mobile hooks are moved using a catch and spring).
Table 2-1 Attachment details for both mounting types
2.2.3. MOUNTING ON DIN RAILS
For DIN rail mounting:
•fix two symmetric DIN rails (for units
rated 16 A to 63 A) in accordance with
the unit dimensions and safety
recommendations.
•bring the unit up against the top rail,
engaging the two fixed hooks on the
top attachment plate
• push the unit against the rail
• clip the unit onto the bottom rail
using the mobile hooks on the bottom
attachment plate, ensuring that they
are properly engaged.
To remove the unit:
•move the mobile hooks downward by
pulling the catch on the bottom
attachment plate
• unclip the unit from the rail.
Figure 2-1 Rails DIN attaching.
Mobile attachment
hooks
Catch to move
hooks downwards
Lower
attachment
plate
220
EN50022
DIN Rails
Upper
attachment
plate
Attachment
hooks
125

Installation
7200A User Manual
2-4
2.2.4. BULKHEAD MOUNTING
Figure 2-2 Bulkhead mounting - 16 A to 63 A units
96
220
210
80 For 2
M4 screws
For 2
M4 screws
305
275
124
144
For 2
M6 screws
For 2
M6 screws
144
498
426.7
399.7
124 For 2 M6
screws
For 2 M6
screws
Figure 2-3 Bulkhead mounting - 80 A to 100 A units
Figure 2-4 Bulkhead mounting - ≥ 125 A units

7200A User Manual 2-5
Installation
2.3. WIRING
2.3.1. GENERAL CONNECTION DIAGRAM
The general connection diagram shows the power terminals
(independently of the three-phase load configuration) and control connectors.
ON
HEAT
7200A
63 A / 500 V
EUROTHERM
PE
3/L2
4/T22/T1
1/L1
ε
5/L3
6/T3
To three-phase load :
Thyristor fuses
(External ≤ 100 A)
Protective
Earth
To supply network
Protection and cut)out installed by user
Auxiliary power supply
Analogue signal
connector
EN 60947-4-3
ANA
0VA RI 5VA
31 32 33
Aux1
230 N
16 17 18
Figure 2-5 General connection diagram for units ≤ 100 A

Installation
7200A User Manual
2-6
MSF
3a 3b
75 76
EUROTHERM
ε 7200A
200A/ 500V
PE
ON
HEAT
EN 60947-4-3
1/L1
2/T1
A/F
230 N
16 17 18
L1 L2
Internal fuse blown
contact(MSFU)
Supply protection
and cut-out.
Installed by user
Internal power
wiring diagram
Controlled channel
terminal
(supply side)
Protective earth
terminal
Controlled channel
terminal
(load side)
3/L2
2/T1
Internal fuse compartment
(thyristor protection)
1/L1
4/T2
3/L2
4/T2
ANA
0VA RI 5VA
31 32 33
MSF
3a 3b
75 76
Figure 2-6 General connection diagram for units with rating ≥ 125 A

7200A User Manual 2-7
Installation
ON
HEAT
7200A
63A /500 V
EN 60947-4-3
EUROTHERM
PE3/L2
4/T22/T1
1/L1
ε
5/L3
6/T3
Thyristor fuses
Protective earth
terminal
Internal
power wiring
diagram
Three-phase supply
Protection and cut-out installed by user
Analogue input
connector
L1
L3
L2
Three-phase load
(star without neutral)
3power terminals
(supply side)
3 power terminals
(load side)
ANA
0VA RI 5VA
31 32 33
Three-phase load
(closed delta)
OR
Figure 2-7 Connecting a three-phase load using star without neutral OR closed delta configuration
2.3.2.2. Three-phase load coupling
Power connections to the unit depend on the load configuration.
The following two configuration schemes may be used for three-phase loads:
• star without neutral (3 connection wires, code 3S),
• closed delta (3 connection wires, code 3D)
2.3.2. POWER CONNECTIONS
2.3.2.1. General (Ratings from 16 A to 200 A)
7200A power thyristor units comprise two channels controlled by thyristors.
Terminals 1/L1, 3/L2 and 5/L3 must be wired to the three-phase supply network.
Terminals 2/T1, 4/T2 and 6/T3 must be wired to the three-phase load.
The protective earth terminal PE (earth symbol) must be wired to the protective earth.
Ratings A Terminal Capacity Clamping torque Stripping length
mm2AWG Nm mm
16 à 25 2,5 à 6 13 à 9 1,2 13
40 à 63 6 à 16 9 à 5 1,8 13
80 à 100 16 à 35 5 à 2 3,8 20
Ratings A Terminal Capacity Clamping torque Crimp eyelet
mm2AWG Nm
125 50 à 120 0
160 70 à 120 00 ø 10 (ou ø 12)
200 95 à 120 000
16,4 (or 28,8)
M10 nut (17 wrench)
to attach eyelet
and terminal
NOTE : Conductor cross-sections should comply with IEC 60943.
Power connections to the thyristor unit depend on the load configuration scheme.
The following two configuration schemes may be used for three-phase loads:
Table 2-2 Power wiring details for ratings from 16 to 200 A