1. Varitector VSSC – surge protection for I/O

2. Surge Protection ....for Power and I/O
SPD II & SPD III
VARITECTOR VSPC
VARITECTOR VSSC
PLC
Power protection
Imax = 40kA (8/20μs)
Pluggable arrestor module
Local status indicator
Contact for remote status alarm
UL 1449 Edition 3
Signal protection
Imax = 20kA (8/20μs)
Pluggable arrestor module
Local status indicator
Group connection for remote status alarm
UL 497B
Signal protection
Imax = 20kA (8/20μs)
High density / low cost
4 or 6-terminal models
Local status indicator (6 terminal option)
UL 497B

3. VSSC ..............surge protection for I/O
What’s in a name ?
Varitector = Variable Protector
SSC = Signal Screw Connection
VARITECTOR VSSC
What is new?
The 20+ year old DKU Series is being replaced with a new pluggable style/construction with more functionality.
What approvals are there?
UL is available now
Class & Division and ATEX are planned for 2012.
DK Series
What is the availability?
The new range includes more than 100 different articles.
These are in stock – either in Richmond (high runners) or Detmold.

4. Where is I&C Surge protection used?
Industries where plant / signals are outside, e.g….
Sewage treatment plants
Water treatment and pumping stations
Chemical plants
Refineries
Customers are:
Municipalities (+ their SIs)
Plant end-users (above)
Package plant OEMs (separators, dryers, coolers, effluent treatment, chemical dosing, pumping)

5. VARITECTOR SSC – Surge Protection for C&I
Screw connection:
Torx-slot screw
Cross section for 0.5mm² to 6mm²
High tightening torque (0.8Nm)
Easy to use:
 Direct PE-contact by fit on the rail
Two in one:
Terminal block with integrated surge protection
Space saving in the cabinet:
only 6.2mm width per loop
Approved to UL497B:
High impulse current up to 20kA (8/20μs) and up to 2,5kA (10/350) to PE
More than 100 variants:
 current loop and binary signals
 for 5V, 12V, 24V, 48V and 60V
single components inside, e.g. MOV
 Protection for data signals
4 pole & 6 pole options:
VSSC4 is for basic functions
VSSC6 includes TR and LD options

6. Basic functions

7. Basic functions – VSSC6 TR SL LD
Conductivity Probe (Switch) 0V
24V
DC Power Supply

8. VSSC .......v. MTL MTL Surge Technologies: SD Series Bad:
No LED indicator option for status
No marking space available
Only 6 pole format
Wire size up to 14AWG/2,5 mm²
LP = $ (VSSC6 TR FG CL 24VAC/DC 0.5A = $60.49)
Good:
Direct PE- Connection
Fuse / disconnect option for loop testing
Function with colour code
Wide approvals e.g. CSA, UL, ATEX,
Installation size : 7 mm x 99 mm x 100 mm

9. S Signal type…? Analog, status, fieldbus, telecom
Selection step 1
What information do we need to be able to specify a product? Here is a guide.
S Signal type…? Analog, status, fieldbus, telecom
N Nominal voltage….? 12V, 24V, 48V, 60V, 120V, 230V……
I Indication of status needed…? Locally and /or Remotely
F Frequency….? Fast-changing signals, Fieldbus or Telecom ?
F Floating or Ground referenced…? Process measurement signals are often floating.
Think….. S.N.I.F.F…. !

10. Questions?

11. Back-up slides

12. VSSC .........Typical customer questions
“I need surge protectors for 24V lines / signal lines / measurement loops / PLC inputs”
“……… or for bus / RS485 / RS 422 / RS232 / telephone networks”
“I’m looking for over-voltage / lightning / transient protectors for …..control loops”
“I need some of your MTL / SD modules….. ”
“……… or DK 4 U, DK 5 U, DK 6 U …or MCZ OVP”

13. Types of process I/O signals
Exc + Tx + -
2-wire
transmitter
Type K
Thermocouple -
Frequency
Input, 3-wire
RTD
3-wire
Digital
Input
3-wire
transmitter
Pwr
Sig + 0v Tx
Pot.
4-wire
transmitter
Pwr +
Sig + 0v Tx
Pwr -
Analog
Actuator
Frequency
Input, 2-wire
Digital
Actuator

14. Terminal sized surge protection
Slim line terminal for surge protection
4 and 6AN screw type connection
Surge discharge via PE rail contact
Double disconnect lever for test function
Accessories:
End plate 1,5 mm
Frame for bigger parts 6,2mm
Standard marker WS 10/5 middle / DEK5 / SnapMark
80 mm
88 mm
Breite: 6,2 mm
55 mm
74 mm

15. Mechanical Data Screw: Torx / slot Torque: 0,8 Nm
Connection points 4AN
Cross-section max. solid - 6mm²
flexible - 4 mm²
Stripping length 10 mm
DIN Rail TS35
PE-Connection to TS 35
Protection class IP20
Housing Wemid black
UL V0

16. Electrical Data Discharge current Imax up to 20kA
Voltage (Nom.) 5, 12, 24, 48 and 60V
Current (series load) up to 26A
Discharge via PE contact up to 20kA
Monitoring (only for 6AN) 2 LED's
Protection circuit for… Analogue signal
Digital signal
Temperature signal
Floating Ground System
2 stage (GDT und TVS)
1 stage (GDT, MOV or TVS - parts)

17. Varitector SSC 6AN Easy to use for test functions:
 two disconnect lever to open the signal signal circuit
Monitoring by LED:
 Signal indication
Easy to use:
 Direct PE-contact by fit on the rail
Easy handling for PE connection:
 Two additional connection points for PE

18. Competition overview Weidmüller MTL Type SD Phoenix
Varitector SSC
MTL Type SD
Phoenix
Type TT
Dehn&Söhne Type DCO
OBO Type MDP
Connection
4 and 6 AN with Slot-Torx screw
6 AN
screw
5AN tension clamp
4AN screw
5 AN tension clamp
8 AN screw
PE-Contact to TS35
Yes No
Easy to identify in the cabinet
Yes, by different colours on the top marker
Width
6,2mm
7mm
6mm
8,1mm
Disconnection lever
Yes for 6AN
Compatible Design
TERMOPTO and other terminals
UK Series
Monitoring
6AN
Amount of variants
107 products from 5, 12, 24,48 up to 60V
18 products 5, 24, 48V
91 products from 5, 24, 48 and 60V
15 products from 12, 24, 48 and 60
9 products from 5, 24 and 48V
ATEX variants
6 products
4 products
2 products
1 product
none
Floating ground products
Impulse current max.
20kA
10kA
5kA
Price position
100%
120%
110%

19. VSSC ..........v. Phoenix Contact TERMITRAB: TT-SLKK5 Bad:
Bad look-and-feel, if the products are assembled on the rail
Worse connection to the DIN Rail
Lateral off-set (S-Form) a single unit can not disassembled in a group of terminals
Good:
Compact size
Approval: cRUus
Installation size: 8 mm x 67,5 mm x 66,5 mm

20. VSSC ..........v. Phoenix Contact TERMITRAP: TT-EX(I)-24DC Bad:
The prints are not readable
Good:
Direct PE-Connection
Approvals: cULus, Cl1 Div 2, KEMA 99ATEX5687X
High torque possible
Installation size : 6,2 mm x 79,6 mm x 54,6 mm

21. VSSC ........v. Dehn & Söhne DEHNconnect: RK… Bad:
Individual marking only on the top of the product
Simple PE-Contact
Terminal made by Wago
Only tension clamp
No approvals
Only one ATEX-terminal: RK Ex (i)  DCO RK MD EX
Good:
Good readable print
Installation size : 6 mm x 90 mm x 57 mm

22. VSSC .......v. OBO Bettermann MDP Bad:
Individual marking only on the top of the product
Negative look-and-feel of the terminal
Only tension clamp
No approvals
Only 3 parts: 5V, 24V, 48V
Big installation size
Good:
Test under life with test unit “Life Control”
8 AN terminal
Installation size : 8 mm x 100 mm x 99 mm

23. VSSC .......v. MTL MTL Surge Technologies: SD Series Bad:
No LED indicator option for status
No marking space available
Only 6 pole format
Wire size up to 14AWG/2,5 mm²
LP = $ (VSSC6 TR FG CL 24VAC/DC 0.5A = $60.49)
Good:
Direct PE- Connection
Fuse / disconnect option for loop testing
Function with colour code
Wide approvals e.g. CSA, UL, ATEX,
Installation size : 7 mm x 99 mm x 100 mm