Static Power iSTS G User manual

iSTS-Model-G-User-Manual-v1
Model G
User Manual
Static Transfer Switch
Last Updated
23/01/19

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Contents
1 Safety Instructions................................................................................................................3
1.1 Introduction .............................................................................................................................3
1.2 Transport, Storage, Unpacking ...............................................................................................3
1.3 Installation...............................................................................................................................3
1.4 Electrical Connection...............................................................................................................4
1.5 Synchronism ...........................................................................................................................4
1.6 Fire Regulations......................................................................................................................5
1.7 Standards Applied & Conformity .............................................................................................5
1.8 Warranty..................................................................................................................................6
2 System Overview ..................................................................................................................7
2.1 Description..............................................................................................................................7
2.2 Single Line Diagram –Single-Phase 2-Pole Models...............................................................8
2.3 Single Line Diagram –Three-Phase 4-Pole Models ...............................................................8
2.4 Overview.................................................................................................................................9
3 Installation...........................................................................................................................10
z3.1 Environment Check.............................................................................................................10
3.2 Connecting to Terminals .......................................................................................................11
3.3 Commissioning......................................................................................................................12
4 User Interface Panel............................................................................................................14
4.1 Preferred Switch....................................................................................................................14
4.2 Override Switch.....................................................................................................................14
4.3 Remote Connection Port - High Density DA-26 ....................................................................15
5 Display Screen Interface.....................................................................................................16
5.1 Home / Status Screen...........................................................................................................16
5.2 Status & Alarms ....................................................................................................................16
5.3 Mimic Display........................................................................................................................17
5.4 Manual Transfers..................................................................................................................17
5.5 Variables...............................................................................................................................18
5.6 Events...................................................................................................................................18
5.7 Control Screen......................................................................................................................19
5.8 Settings.................................................................................................................................20
5.9 Time & Date..........................................................................................................................20
5.10 Calibration...........................................................................................................................21
5.11 Steady State........................................................................................................................22

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5.12 Transient State....................................................................................................................23
5.13 Output .................................................................................................................................24
5.14 Communication Settings .....................................................................................................25
6 Web Browser Interface .......................................................................................................26
6.1 Connecting to a PC...............................................................................................................26
6.2 Connecting to the Web Server..............................................................................................27
6.3 Control Panel ........................................................................................................................28
6.4 Email.....................................................................................................................................30
6.5 Advanced Settings ................................................................................................................31
6.6 Input Steady State Settings...................................................................................................32
6.7 Input Transient Settings ........................................................................................................34
6.8 Output Settings .....................................................................................................................36
7 Maintenance Bypass...........................................................................................................38
7.1 Overview...............................................................................................................................38
7.2 Using the OVERRIDE switch ................................................................................................38
7.3 Maintenance Bypass Procedure ...........................................................................................38
7.4 Reinstatement from Maintenance Bypass Procedure ...........................................................39
8 Fault Diagnosis ...................................................................................................................41
8.1 Fault Codes...........................................................................................................................41
8.2 Load Fault.............................................................................................................................43
9 Maintenance ........................................................................................................................44
10 Specifications....................................................................................................................45
11 Operating Parameters.......................................................................................................47
12 Contact Information..........................................................................................................48

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1 Safety Instructions
1.1 Introduction
Some aspects of this manuals contents may differ to the equipment as supplied due to
technical improvements, specific model variations etc. If in any doubt in respect to the
procedures and safety issues consult the manufacturer and do not proceed until clarification is
received.
This manual contains important instructions that should be followed and fully understood
before proceeding and commissioning and operation to prevent harm to personnel and
equipment.
Installation and commissioning should be carried out only by qualified and experienced
electricians. The STS should be operated by technically qualified personnel that are
authorized, experienced and have knowledge and understanding of the equipment and the
critical loads, using the documented procedures.
Read this whole document thoroughly. Understand every aspect before proceeding. Request
further assistance if you do not understand any aspect of the operation of the STS. Support
and contact numbers are at the end of the manual.
These instructions cover normal operation in the automatic as well as in manual modes.
Special operating conditions, such as short circuit tests, input supplies, etc., are not covered in
this document. These operations require comprehensive knowledge of the overall system and
should be carried out by properly qualified, skilled and competent service personnel only.
1.2 Transport, Storage, Unpacking
The shipping packaging, either box or crate, has been fitted with Shockwatch drop sensor to
help determine whether the STS has been dropped during transit which can cause damage to
the product(s).
Procedure for Receiving Shipment:
•If the Shockwatch indicator is RED, it does not mean that damage has occurred, it only
indicates that the carton received an impact or movement. If the indicator on the label is
RED, make a notation to that effect on the bill of lading or delivery receipt or document.
Examine contents immediately for possible damage. If damage is discovered, inform
carrier immediately and follow normal procedure for a carrier inspection and filing of a
concealed damage claim.
•Take a picture of the carton and contents as a record.
•If the packaging is OK then please keep the packaging in a secure place in case the unit
needs to be returned for repair.
1.3 Installation
The following instructions are provided for the personal safety of operators and also for the
protection of the described product and connected equipment.
•Observe the prescribed accident prevention and safety rules for the specific application.

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•When installing the STS strictly observe all information on technical data and operating
conditions. Comply with all warnings, and strictly follow the procedures and practices as
described in this manual.
•This STS is intended to be used in a controlled indoor environment and free of
conductive contaminants and protected against animal intrusion.
•It is important that the unit has adequate ventilation. Maintain air movement around and
through the unit. Do not block the air vents or restrict airflow over the heatsinks on the
side of the STS.
•The unit must be placed in a sufficiently ventilated area; the ambient temperature should
not exceed 40°C (104°F).
•Do not install the STS in an excessively humid environment or near water, relative
humidity should not exceed 90% at 20°C (680F).
•Avoid spilling liquids or dropping any foreign object into the STS.
•The electrical connections must be covered.
•Connecting cables must be supported.
•Earth connection must be checked for safe function after assembly.
1.4 Electrical Connection
•Cable lug size is limited to 35/50 mm² or 70 mm² using narrow palm lugs and 10 Amps
per terminal.
•All cables connecting to the STS should be supported and not weigh the rear of the STS
and strain the point of connection at the front of the STS.
•All electrical connections are to be realized by properly qualified, skilled and competent
service personnel only.
•Consider electrical distribution discrimination carefully. The STS has two incoming AC
power sources; your upstream protective devices must discriminate with downstream
protective devices. The upstream STS supply breaker /fuse should only open if the
downstream device protection is unable to trip or there is a fault within the STS.
1.5 Synchronism
The smoothest change-over occurs when the supplies are in synchronism. If an asynchronous
transfer occurs, large currents may flow into the load which can damage trip & protective
devices, blow fuses, saturate and cause damage to transformers. If possible it is best to make
sure the supplies are in synchronism.

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1.6 Fire Regulations
Should a fire break out inside the system, use a fire extinguisher with CO2 or Halon. Do not
inhale vapours.
1.7 Standards Applied & Conformity
This equipment conforms to the following standards and EC Directives:
Standards to which conformity declared:
EN 60950-1 Information technology equipment Safety - General requirements
EN/AS 62310.1 Static transfer systems (STS) - General and safety requirements
EN/AS 62310.2 Static transfer systems (STS) - Electromagnetic compatibility (EMC)
requirements
EN/AS 62310.3 Static transfer systems (STS) - Part 3: Method for specifying performance
and test requirements
EN/AS 55024 Information technology equipment, Immunity characteristics, Limits and
methods of measurement
EN 60950-1-2006 Information technology equipment safety: General requirements
Application of Council Directives:
2006/95/EC Low Voltage Directive
73/23/EEC Low Voltage Directive
89/336/EEC EMC Directive, in version 92/31/EU
93/68/EEC EMC Directive Amendments
The product mentioned in this manual conforms to the relevant requirements to the appropriate
EU Directive, i.e. that this product meets all relevant EU Directives and that it can be sold
inside the European Union without national commercial hindrances.
Relevant EU Directives: EMC- and Low Voltage Directives:
•EU Directive on Electromagnetic Compatibility 89/336/EU, in version 92/31/EU,
93/68/EU
•EU Directive on Electrical Equipment designed for use within certain Voltage Limits
(Low
Voltage Directive) 73/23/EU, in version 93/68/EU
The directives themselves define only on a modest scale what to do and refer to the
harmonised standards. One of the EU harmonised product standards is applicable for rectifier
systems.

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Year of CE Marking 2015/2016
1.8 Warranty
Static Power operating through its authorized agents warrants that the standard products will
be free of defects in materials and workmanship for a period of 24 months after the date of
invoice, or such other period as may be specified.
This warranty does not cover failures of the product which result from incorrect installation,
misuse, alterations by persons other than authorized agents or abnormal operating conditions.

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2 System Overview
2.1 Description
A Static Transfer Switch (STS) provides seamless switching between two power sources to
provide interrupted power to a critical load.
The STS continuously monitors the supply sources for failure or degeneration and switches
automatically to the alternate source if the load will be affected. The break in the supply
transition is so short that it is not seen by the critical load. This switching process is undertaken
as a break before make transfer, preventing overlapping which can cause large and
unpredictable currents. Both the active conductor and the neutral are switched. Thyristors are
used to undertake the switching process.
In the case of downstream load fault conditions, the fault current drawn from the supply may
degrade or damage the supply sources; as a consequence should a fault current exist in the
load the STS will inhibit a transfer to the alternate source even if this causes source supply
degradation or loss. This is to ensure that the fault will not be transferred to the alternate
supply with the possibility of degrading both sources.

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2.2 Single Line Diagram –Single-Phase 2-Pole Models
2.3 Single Line Diagram –Three-Phase 4-Pole Models

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2.4 Overview
The STS includes a mechanically interlocked maintenance bypass via a 5 x circuit breaker
array.
•L1, L2, L3 refers to the phases, or Lines 1,2 and 3.
•N refers to Neutral
•S1 and S2 refers to Supply 1 and 2.
•PSU refers to Power Supply Unit.
•CB refers to Circuit Breaker.