Compass b instructions for use englisch

Tài liệu hướng dẫn lắp đặt và sử dụng cảnh báo sự cố Compass B 1.0 của nhà sản xuất Horstmann/ Đức. ComPass B là bộ cảnh báo ngắn mạch và chạm đất có hướng sử dụng cho lưới điện phân phối trung thế với hệ thống trung tính nối đất trực tiếp, tín hiệu điện áp được lấy thông qua các bộ phụ kiện Wega1.2C, Wega2.2C. Thông qua giao thức Modbus, thiết bị có thể được tham số hóa, báo cáo các sự kiện lỗi và dữ liệu đo được về hệ thống SCADA. Sản phẩm tương thích lắp đặt trong các tủ RMU của các hãng như: TGS24 của Tgood; SafeRing của ABB; RM6 của Schneider; 8DJH, NXPLUS C của Siemens; XIRIA của EATON

104101-0145October 2020

Instructions for Use

2.4 Wega 1.2 C, Wega 2.2 C and Wega 1.2 C vario 5

2.5 HR interface cable set 5

3.1.3 Fault detection after loss of auxiliary supply 7

3.1.4 Voltage ring buffer 7

3.1.5 Inrush current suppression 7

3.1.6 Reset modes 8

3.2 Measuring the values in a medium-voltage system 8

3.3 Operation in ComPass A mode 8

4.2 Plug-in housing for panel mount 10

4.3 Installation of current sensors 11

4.3.1 General 11

4.3.2 Installation of single-phase current sensors 11

4.3.3 Installation of summation current sensors 12

4.4 Electrical connection 12

4.4.1 Terminal strips 12

4.4.2 Assignment of terminal strips 12

5 Device configuration and commissioning 14

techni-Installation, connection and commissioning of the devices must be carried out by an electrician observing the “Five Safety Rules” according to DIN VDE 0105 (EN 50110).

Important terms

The following defined terms must be understood by the operator of this device Failure to observe, recognise and act accordingly may impact the safety of the operator and/or the operable life of this device and/or con-nected devices/equipment

If required, the Declaration of Conformity may be obtained from the following address:

Dipl.-Ing H Horstmann GmbH | Humboldtstraße 2 | 42579 Heiligenhaus, GermanyTel.: +49 2056/976-0 | Fax: +49 2056/976-140 | www.horstmanngmbh.com

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cy of medium-voltage networks• to monitor the load flow direction (A or B)The ComPass B is designed for operation in radial, ring and mesh networks.It can be used in solidly earthed, low-impedance, resonant earthed or isolated neutral systems.

2 Description of the device

2.1 Scope of delivery

A complete set of ComPass B includes:• 1 display unit in a plug-in housing for panel mount• 3 single-phase current sensors,

alternatively: 2 single-phase current sensors and 1 summation current sensor• Integrated voltage detecting system Wega 1.2 C, Wega 2.2 C or Wega 1.2 vario + 1 set of connection leads

alternatively: 1 set of HR-interface cable alternatively: 3 capacitive insulators + 1 set of connection leads

Closed single-phase bushing-type current sensor for cable diameter of 79.5 mm

Single-phase, split-core cable-type current sensor for cable / bushing diameters up to 65 mm

Tab 2.1: Short-circuit current sensors

DescriptionSplit-core summation current sensor for earth fault detection, for cable diameters up to 150 mm

Split-core summation current sensor for earth fault detection, for cable diameters up to 220 mm

Tab 2.2: Summation current sensors

Dipl.-Ing H Horstmann GmbH

DANGER!

Make sure current sensors are mounted only on fully insulated i.e touch-safe conductors.

2.4 Wega 1.2 C, Wega 2.2 C and Wega 1.2 C vario

The Wega 1.2 C, Wega 2.2 C or Wega 1.2 C vario provides the tapped capacitive voltage to the ComPass B in order to measure and detect the fault direction and load flow

DescriptionIntegrated voltage detecting system Wega 1.2 C (without relays)

Integrated voltage detecting system Wega 2.2 C(with relays)

Integrated voltage detecting system Wega 1.2 C vario

Connection cable ComPass B to Wega

Tab 2.3: Integrated voltage detecting systems

2.5 HR interface cable set

The HR interface cable set is used to tap the voltage at capacitive measuring points which is required for the direction decision and the detection of faults and load flow direction Various types are available to cope with different requirements (cable length, connectors) of switchgears offered in the market

DescriptionHR interface cable set

Tab 2.4: Interface cable set

2.6 Capacitive insulators

In air-insulated switchgear units capacitive insulators are used for voltage coupling to the ComPass B

DescriptionInterface cable set for insulators

Tab 2.5: Example for insulators

The unit allows individual settings of delay times for all of the above mentioned response criteria Whenever one or more of the specified response criteria are met, the ComPass B identifies the nature of the error and determines the direction of the fault using the sampled values of the affected voltages and currents.

3.1.2 Fault direction

Short-circuit / earth fault in solidly earthed and low-impedance systemsFor short-circuits and earth faults in solidly earthed and low-impedance systems, the ComPass B determines the angle between the fault current and the fault voltage of the affected phases to derive the fault direction If the impedance angle ranges from -45° to +135°, the ComPass B determines a forward fault (↓B direction)

Earth fault in resonant earthed and isolated systemsFor earth faults in resonant earthed and isolated networks, the ComPass B uses the wattmetric method Here the direction of a fault is determined by the phase-to-neutral voltage VNE and the earth fault current IE.• Resonant earthed network operation (cos φ);

In resonant earthed networks, the ComPass B mines the direction of the active power of the earth fault (VNE x IE x cos φ)

deter-The ComPass B is provided with an integrated dead zone (non-coloured area, see figure 3.2) for too low levels of earth fault current IE, or for phase angles that are unfavourably located between VNE and IE

Fig 3.2: Angle diagram

VNE

Dipl.-Ing H Horstmann GmbH• Isolated network operation (sinφ);

In networks with isolated neutral, the ComPass B termines the direction of the reactive power of the earth fault current (VNE × IE × sin φ)

de-Fig 3.3: Angle diagram

3.1.3 Fault detection after loss of auxiliary supply

If the tBacklash function is activated, the ComPass can detect faults for the preset time after the loss of the iliary supply After the time tBack lash has expired, the ComPass turns into battery saving mode Modbus com-munication is only available when auxiliary supply is present

aux-3.1.4 Voltage ring buffer

If there is a small distance between the location of the fault and the place of installation of the ComPass B, the phase voltages of the affected phases may become too small to be useful for the decision of fault direction For this reason, the Compass B is provided with a ring buffer The measured values of all phase voltages are per-manently written into this buffer In the case of a fault these voltages are extrapolated in time in order to obtain information on the phase relation

3.1.5 Inrush current suppression

The ComPass B uses an inrush current suppression to avoid unintended tripping due to inrush The ComPass B can be adjusted to detect faults only when the phase voltages were previously present for a preset time

In the case of a fault, the OLED display presents a fault message informing the type and direction of the fault For indication press any direction on the rocker switch

Fig 3.4: Short-circuit tripping ↓B (direction of the line “forward”)

Fig 3.5: Short-circuit fault

VNE

If a relay is configured for momentary contact it will engage for 1 s for every fault assigned to it, whereas, if it is configured for permanent contact, it will remain engaged as long as ComPass B is indicating the fault If a second fault occurs, it will disengage for 1 s and then re-engage.

• RS485/Modbus interface: ComPass B stores every fault in its internal memory The last 20 events are stored including date, time and data of fault direction (A or B) In addition, also the measured values are stored at the time the fault is gen-erated and 2 s before the fault occurs The memory can be downloaded via RS485/Modbus or viewed on OLED

3.1.6 Reset modes

ComPass B can be configured to stop fault indication:• Manual reset

• Remote reset• Automatic time reset (1 min – 24 h) • Via RS485/Modbus interface• Auxiliary supply restoration • Voltage restoration

• Current restoration

3.2 Measuring the values in a medium-voltage system

The ComPass B permanently senses the voltage, current and frequency values and performs calculated urements of P, Q, S, effective energy and cos φ in medium-voltage distribution networks It also calculates the mean values (Ø15 min) and the maximum

meas-values (24 h / 7 days / 365 days, slave pointer) All meas-values can be read locally on the OLED display or transmitted by remote signals via the RS485/Modbus interface

3.3 Operation in ComPass A mode

ComPass B can be operated in ComPass A operating mode No voltage measurements are required in Pass A mode Therefore, no fault direction is displayed

Com-The setting is made in the menu: Settings → Expert mode → Special functions ComPass.In ComPass A mode, only the “earth short-circuit” function is active It does not matter which neutral earthing is set.The connection of three phase current sensors or alternatively 2 phase current sensors and one summation current sensor is still permissible

Dipl.-Ing H Horstmann GmbH

3.4 Operator control3.4.1 Front panel

ComPass B can be controlled completely from the front panel which consists of the elements shown in the ure below

fig-Fig 3.8: Front panel control of ComPass BOLED display:

• 4x21 alphanumerical characters.• Multilingual plain text menus (German / English / Dutch / Portuguese / Francais).Multicolour LED:

• Green / Yellow / Red.Rocker switch (4 directions):• Activation of OLED display.• Navigation through plain text menus.Display illumination

In normal operation mode, the OLED display on the front panel is switched off It is illuminated once the rocker switch is used (press to any direction) If the rocker switch is not used for 60 seconds, the display illumination is turned off

Multicolour LEDThe multicolour LED signals different operating conditions of the ComPass B (see also Tab 3.1) In particular when the OLED display is not illuminated, the LED gives specific information that can be investigated in more detail by the user via the OLED display

green • ComPass B is powered from external supply (permanent light)• No error (permanent light) yellow • Test mode (single flashing LED) and device error (double flashing LED; contact after- sales service) red • Fault in the MV system (LED flashes)

• No indication, external supply not connected.• No error present

Tab 3.1: Indication of operating conditions by multicolour LEDRocker switch

The rocker switch is used for navigating the plain text menus on the display.1 Up: Scroll up in a menu

Change (increase) a parameter.2 Down: Scroll down in a menu

Change (reduce) a parameter.3 Left: Leave menu (abort)

Jump to main menu.4 Right: Call submenu

Save a changed parameter Execute a command

Fig 3.9: Rocker switch Multicolour LED

1

4.3

2

Dipl.-Ing H Horstmann GmbH

3.4.2 RS485 / Modbus interface

The RS485/Modbus interface is used for remote control, remote readout and remote parameterising of ComPass B.The ComPass B uses a 2-wire interface according to the RS485 standard with no line termination in the ComPass B.The ComPass B is a Modbus Remote Terminal Unit (RTU) Slave

3.4.3 Digital inputs / outputs

The ComPass B is provided with 4 digital (relay) outputs and one digital input Each relay output can be signed with individual functionality either via the front panel control or the RS485 / Modbus interface

as-3.5 Power supply

The ComPass B is powered by an external 24 — 230 V AC/DC ±10 % supply An incorporated lithium cell vides the energy in the case of lack of external voltage supply, so the readout of all saved data is ensured in the case of a fault

pro-If the external power supply stops, the ComPass B will stop the short-circuit and earth fault detection as well as MV network monitoring and communication via the RS485 / Modbus interface Relays remain energised even in the event of a fault

If the tBacklash function is activated, the ComPass can detect faults for the preset time after the loss of the iliary supply After the time tBack lash has expired, the ComPass turns into battery saving mode Modbus com-munication is only available when auxiliary supply is present

aux-3.6 Test mode

The ComPass B features a built-in test mode This mode can be activated via the• front panel control,

• RS485 / Modbus interface,• external input contact.During test mode, the ComPass B controls both its electronics and its software The yellow light of the multicol-our LED starts flashing to indicate the test mode

If an error is detected on the device, the multicolour LED flashes yellow, either in a double or triple flash mode which depends on the type of error Further information on the error can be gathered either from the front pan-el control or via the RS485 / Modbus interface (see also paragraph 3.4.2)

ap-4.2 Plug-in housing for panel mount

Insert the plug-in housing into a prepared DIN size cut-out of 92+0.8 mm x 45+0.6 mm on the front of the gear panel and lock it by means of 4 integrated spring clips with self-retaining feature Provide a minimum in-stallation depth of 95 mm with connected leads

switch-If you need to dismount the device, remove the front frame and front plate by pushing the retainer spring clips towards the centre of the device (Order No of disassembly clip: 49-9090-016)

Dipl.-Ing H Horstmann GmbH

4.3 Installation of current sensors4.3.1 General

DANGER!

General mounting instruction

• Note the general safety instructions in the Instructions for Use of the indicating unit.• Current sensors must be mounted with the correct orientation The arrow next to the marking

“B” must point in the direction of the MV-cable, away from the switchgear • The MV-cable screened earthed wire must be routed back through the sensor and connected

to earth potential (compensation for shield currents) Place the current sensors as shown below If the earth screen wire must be lengthened this should be done in accordance with relevant procedures

4.3.2 Installation of single-phase current sensors

1) Delivery conditionhook

MV-cable

fit sensor around earth screen

place cable tie through eye lids of the current sensor

tighten screwtighten cable tie around the MV-cable Take connecting cable to indicator unit Ensure polarity is correct

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Dipl.-Ing H Horstmann GmbH

4.3.3 Installation of summation current sensors

Mounting of the summation current sensor Mounting of the summation current sensor (40 – 105 mm) (Order No 49-6023-000) (180 or 220 mm) (Order No 49-6023-010/49-6023-020) The shields of all three wires must be returned through the sensor in order to compensate for any shield currents

Application Note

The current sensors can be connected in 2 configurations:• 3 phase current sensors or

• 2 phase current sensors and 1 summation current sensor

The summation current sensor is connected instead of the phase current sensor for phase 2 (L2).The selection takes place via the neutral point treatment:

• (Short-time) low-impedance earthed neutral system: 3 phase current sensors• Resonant and isolated earthed neutral system: 2 phase current sensors and 1 summation current sensorThe setting is carried out in the menu via:

Settings → Expert mode → Network parameters → Neutral point treatment

4.4 Electrical connection4.4.1 Terminal strips

The terminal strips are located in the rear wall of the instrument If provided on the side of the switchgear, form electrical connection according to the following terminal reference list (see also the circuit diagram on the top side of the instrument, numerical arrangement from right to left) Use ferrules of L=6 mm, max 1 mm2 The maximum permissible tightening torque is 0.4 Nm

per-4.4.2 Assignment of terminal strips

Fig 4.1: Circuit diagram on top side of the device