SYMAP® Product Overview

SYMAP® is a flexible microprocessor-based digital protection device for use in low, medium, and high-voltage power systems. Because of its integrated protection functions and human-machine interface capabilities, it is an efficient and cost-effective solution for all types of switchbays.With three powerful microprocessors, SYMAP® offers complete protection functions for generators, motors (synchronous and asynchronous), transformers, power lines, and distributions. All protection functions can be activated simultaneously, and there are no limits to using all of them at the same time.

With SYMAP®, five main breaker controls can be activated with all the necessary functions, such as display, control, and blocking, for optimal breaker management. A small integrated PLC allows individual interlocks from controlling functions. For flexibility in commissioning and during use, both digital and analog outputs can be used to connect the SYMAP® control unit to main switchboard controls. Additionally, a variety of serial interfaces with different kinds of protocols can be used for communication between SYMAP® units and the central control system.

For diagnostics and monitoring, SYMAP® has three microprocessors that supervise each other, providing a watchdog system. Important functions are laid out in a double redundancy combination, operating independently with the second processor. Connected separately, an optional unit for short circuit protection operates parallel to the SYMAP® device and will do so even if the entire voltage fails.

SYMAP® Human Machine Interface

SYMAP® is easy to program and operate. A large graphic LCD with optional LED indicators conveys important data, such as position of all connected breakers, parameter settings, and event histories, at a glance. Graphics and measurements are displayed side-by-side on the LCD, so that the user does not have to switch between pages.

The entire programming of SYMAP® can be done with the keys on its front panel, eliminating the use of external programming devices. The programming is built in and is menu-tree driven, making setting parameters an intuitive process - similar to inputting data in a modern handheld telephone. Optionally, parameters can also be programmed using a laptop computer. Using a laptop offers certain advantages, such as parameter data stored in the laptop can be easily input into other SYMAP® units. Either way, ease of programming is guaranteed and on-site visits by the manufacturer's engineers during commissioning are not required.

SYMAP® provides four hotkeys under the LCD offering access to four groups of values:
- "Meters"
- "Alarm"
- "Process"
and
- "Breaker Control."
The user can press the hotkeys to scroll through pages of information pertaining to these values.

Under the hotkey "Meters," detailed information of electric measurement values, counters for active and reactive power, and of working hours is provided. Under the hotkey "Alarms," all active alarms, event stores, and blockings are displayed. Under "Process," all process data, such as synchronization display, motor thermal indication, and breaker counters, are shown. Under "Breaker Control," up to five breakers can be accessed and controlled. When programming breaker controls, the user has access to various layout configurations available through a library of graphics maintained within SYMAP®. Programmed blockings remain active when manual control of the breaker is used. Each of the highlighted breakers in the LCD can be further controlled by the keys "O" and "I."

For security, access to SYMAP®'s parameter and breaker control data is protected by a code system. The code system offers dual access: by a transponder card or by password input.

SYMAP® Terminal Connections

All connections to SYMAP® are made with terminal plugs on the back of the device, allowing the device to be exchanged easily. The terminal blocks are divided into four groups.

Analog Input for Measurement

SYMAP® provides inputs for analog sensors at the rear of the device. If terminal plugs for the CTs are disconnected, the circuits will be linked automatically so there is no disconnection in the CT circuit loops. A total of 17 analog inputs for current and voltage transformers are used for protection functions. The following list shows possible connections for current transformers (CT) and potential transformers (PT):

- 3 x CT for feeder current
- 3 x CT for differential current
- 2 x CT for ground current
- 3 x PT for feeder voltage
- 3 x PT for bus bar 1 voltage
- 3 x PT for bus bar 2 voltage
- 2 x PT for ground voltage

By use of combined sensors, SYMAP® can provide:

- 3 x for feeder current
- 3 x for feeder voltage

Communication

SYMAP® can serve as the main bay controller for the power management system or substation system. The following list shows the station system items available through SYMAP®:

- Remote supervision
- Remote control
- Remote parameter setting
- Central registration of measured and calculated values
- Central event logging
- Central fault recording, analysis and logging
- Plant power management

Communication Interfaces

SYMAP® can serve as the main bay controller for the power management system or substation system. It provides communication ports available with the following interfaces:

- RS 232 on the front panel for programming and data output
- 2 CAN-bus
- RS 422/485 port
- MODEM
- Profibus DP (opt. via a fiberoptic port)
- MODBUS
- IEC 60870-5-103
- IEC 61850

Extended Board (Optional)

An extended board can be connected to SYMAP®, providing additional in and output channels. The extended board is customized to individual client requirements and can be equipped to a maximum of the following in and output channels:

- 36 digital inputs
- 24 relay outputs
- 8 analog outputs 4...20 mA
- 21 analog inputs PT 100 / PT 1000 or analog inputs 4...20 mA

SYMAP® Recording unit

SYMAP®'s recording unit contains up to three separate parts:

1) event history,
2) detailed protection function history,
and
3) event data recorder (optional).

All data recorded by the unit can be transferred and analyzed via a PC tool. Regardless of power supply, the data store is permanent.

- Protection function events, such as activation and eventual intervention
- The change of binary inputs and outputs
- The control of Local/Remote/Scada
- The change of each switching device
- On-Off commands through central power management system
- Every attempt or trail to give a command prohibited by interlocking
- Every alarm signal (also from diagnostics)
- Data logs for measurement inputs

Event History

SYMAP® automatically collects and stores all activated events with their number, title, appearing and disappearing status, and a time stamp. A maximum of 5,000 events can be stored. In case of overflow, the oldest data will be recorded over.

Detailed Protection Function History

SYMAP® automatically collects and stores all activated events related to protection functions with a time stamp.

- Event number
- Event title
- Time stamp
- Pickup or trip value (with fault phase indication)
- Setting value
- Trip time
- 3-line voltage and current pickup, synchronized with the trip event

A maximum of 1,000 protection function events can be stored. In case of overflow, the oldest data will be recorded over.

Data Recorder (Optional)

The data recorder can log 16 analog inputs, 14 digital inputs, and 12 digital outputs. The recorder has the following settings:

- Number of samples (6 - 72)
- Recording period (5 - 60 sec)
- Pre-trigger (0 - 100%)
- Trigger event (stop for recorder)

The recording period depends on the number of samples. The recorder can be set with the pre-trigger in such a way as record event data even before the event happens. Stopping the recorder can be triggered either by an event or by a preset time. For easier management and trouble-shooting, event data can be transferred and analyzed via a laptop computer. The transfer of data is made by a link through a plug on the front panel of the SYMAP® device.

Diagnostics and Monitoring

SYMAP® has three microprocessors that supervise each other, providing a watchdog system. Important functions are laid out in a double redundancy combination, operating independently with the second processor. Connected separately, an optional unit for short circuit protection operates parallel to the SYMAP® device and will do so even if the entire voltage fails.

SYMAP® provides various diagnostic and monitoring functions as follows:

- All memories (ROMs, RAMs, EEPROMs)
- All analog reference voltages
- Automated test sequences
- Control power ON/OFF of SYMAP®
- Binary input and output for control logic

The following supervising systems are offered by SYMAP®:

- Self diagnostics of SYMAP®
- The inputs of analog data (auxiliary circuit)
- The status and position of switching device and motor's on-off status
- Supervising supply of trip coil
- Gas pressure
- Temperature inside panel
- Each operating life of breaker (hours)

SYMAP® Digital Protection Device

There are three series of SYMAP® units as follows:

-SYMAP®-Y Essential cost series

-SYMAP®-X Basic series

-SYMAP®-BC Basic series expanded to include LED indicators, event data recorder, extended board, power management, and diesel control .

For more detailed information about the hardware and software capabilities of these series please click on the link "Types & Product Guide"