36K V TAYBAH EGYPT MELTING SHOP PROJECT

8BT2

 Air-Insulated, Metal-enclosed

and Metal-clad

Medium-Voltage Switchgear

Loss of Service Continuity category: LSC 2B

(Metalclad)

Partition Class:                                     PM

Internal Arc Classification:                  IAC A FL

customer:  36K V  TAYBAH  EGYPT  MELTING SHOP PROJECT  

General Technical Description

 

Contents:

 1     Switchgear Description                                                                                                         3

1.1      Switchgear type                                                                                                                3

1.2      Panel design                                                                                                                      3

1.3      Enclosure                                                                                                                          3

1.4      Busbar compartment                                                                                                        4

1.5      Switching device compartment                                                                                        4

1.6      Interlocks                                                                                                                           4

1.7      Connection compartment                                                                                                 5

1.8      Low voltage compartment                                                                                                6

2     Benefits and features                                                                                                            7

3     Standards                                                                                                                              8

4     Particulars of the system and the installation                                                                       9

5     Scope of Supply                                                                                                                 10

6     Documentation                                                                                                           11 to 20

1.   Switchgear Description

1.1      Switchgear type

The offered switchgear is air-insulated, metal-enclosed, metal-clad, type-tested, medium voltage switchgear for indoor installation. The switchgear has been designed and type tested in line with IEC 62271-200.

The switchgear along with the vacuum circuit breaker 3AH5 & 3AH3 as switching device offers following benefits to the buyers/users:

-       Saves Lives

-       Peace of Mind

-       Increases Productivity

-       Saves Money

1.2      Panel design

The 8BT2 switchgear panel consists of the following functional compartments: 

-       Busbar compartment

-       Switching device compartment

-       Connection compartment

-       Low-voltage compartment

1.3      Enclosure

The panel enclosure including doors and covers as well as the partition walls are made of sheet-steel and are bolted together.  The complete enclosure including all doors, covers, and end walls is powder-coated with resistant epoxy resin, color Standard  (RAL  7032). Partition walls and shutters are made of galvanized sheet metal.

 

The complete structure including partition walls and shutters is metallic and earthed. This ensures the highest service continuity category LSC2B and highest operators’ safety with partition class PM in line with IEC 62271-200.

 

The service continuity category LSC2B allows access to any functional unit while keeping any other functional units energized and operated normally. For example, it is possible to access the switching device compartment of a 8BT2 panel while keeping the respective connection and busbar compartments, as well as the adjacent panels, live. Thus the category LSC2B provides the highest service continuity when any functional compartment (exception busbar compartment) is opened for maintenance. This feature offers the benefit “Increases Productivity”.

 

The earthed metallic shutters and partition walls offer the partition class PM. This ensures no electrical field in opened compartment due to living parts in the adjacent compartment and no possible influence on electrical field distribution around live parts in an adjacent compartment.

 The exception is when the shutters are opened intentionally. Thus the partition class PM ensures

the highest operators’ safety during maintenance.

This safety feature offers the benefit of “Saves Lives”.

 

In the case of an internal arc fault, the pressure from the individual compartments is released upwards or backward. The front doors of switching device compartments, the sidewalls of end panels, and the busbar compartments are pressure resistant. The 8BT2 switchgear panels have been typing tested under conditions of arcing due to an internal fault in line with Annex A of IEC 62271-200. The offered switchgear confirms classification IAC (initials for Internal Arc Classification) and accessibility “A” for front and lateral sides. The classification IAC ensures operators’ safety even during the remote chance of arcing due to internal fault. This feature offers the benefit “Saves Lives”.

1.4      Busbar compartment

The busbar compartment houses the 3 phase main horizontal busbars along with the bus support insulators, feeder connections and bushings with fixed contacts.

 

The shutter for visual inspection of the fixed contacts in bushings can be opened and closed separately through the switching device compartment. The busbars are made of round-edged profiles. The busbars are bolted from panel to panel.

 

The rear, as well as top covers, are bolted and provide access to busbars either from the rear or top during the installation. Thus making the busbar compartment a “Tool-based accessible compartment” as per IEC 62271-200.

1.5      Switching device compartment

The switching device compartment has a possibility to house one of the following switching devices on withdrawable truck:

-       Vacuum Circuit Breaker 3AH5

-       Vacuum Circuit Breaker 3AH3

Each 8BT2 panel with the above-mentioned switching devices is provided with an integral withdrawable truck. Hence the buyer/user does not require a handling truck for the replacement of the switching device.

 

When moving from the service position to the test position and vice versa, the withdrawable truck opens or closes the metallic earthed shutters covering the fixed contacts in the busbar and the connection compartments.

 The low voltage wiring between the switching device and the fixed part of the panel is connected by means of a 64-pin plug.

 Wiring ducts for control cables are arranged inside the switching device compartment, and they are equipped with removable metallic covers. When viewed from the font, the internal panel wiring for earthing switch, instrument transformers is located in the left-hand wiring duct.

The external control cables enter from below on the left side of the panel through openings in the panel floor.

The use of proven vacuum switching devices minimizes the maintenance and shutdown 

requirement of switchgear. This increases the availability of switchgear and decreases the maintenance costs compared to other switching dielectric mediums. Also, the use of vacuum as dielectric media prevents the formation of hazardous switching by-products. These features offer the benefits “Saves Lives, Peace of Mind, Increase Productivity and Saves Money”

1.6     Interlocks

The switching device a compartment in combination with vacuum circuit breaker offers the following mechanical interlocks.

 

1.    Precondition for moving the withdrawable truck from Test to Service position

-       Inserted and locked in the panel

-       Circuit-breaker in OFF position

-       Feeder-Earthing switch in OFF position

-       Consistent coding between switching device and switchgear panel through LV plug

-       Switching device compartment front door closed and interlocked

2.    Precondition for moving the withdrawable truck from Service to Test position

-       Circuit-breaker in OFF position

3.    Operating the vacuum circuit breaker

-       Withdrawable truck in interlocked end position (Service or Test position)

4.    Operating the feeder earthing switch

-     Withdrawable truck in the interlocked Test position

5.    Opening the switching device compartment front door

-       Withdrawable truck in interlocked Test position

 

Following operations are possible with the switching device compartment front door closed:

-       Mechanical (emergency manual) switching ON and OFF of Vacuum circuit breaker

-       Moving the withdrawable truck from Test to Service position and vice versa.

-       Emergency manual charging of VCB operating mechanism

-       Manual operation of the feeder earthing switch

 

Thus the operators’ safety is completely ensured with the help of the above-mentioned interlocks and with all operations behind a closed doors. This feature offers the benefit “Saves Lives”.

 

In line with IEC 62271-200, the vacuum circuit breaker is type-tested inside the 8BT2 panel, thus ensuring the performance reliability of the Vacuum circuit breaker inside the panel.

This feature offers the benefit “Peace of Mind”.

 The door interlock of the switching device, compartment makes it “Interlocked based accessible compartment” as per IEC 62271-200.

1.7     Connection compartment

The connection compartment can house the following components:

-       Block type current transformers

-       Voltage transformers

-       Surge  arresters

-       Earth busbar,

-       Earthing switch with making capacity

 

Cable termination can be accessed from the front by means of removal of the partition plate between the switching device and cable compartment. Thus, the connection compartment is “Interlock and Tool based accessible” as per IEC 62271-200.

 

1.8     Low voltage compartment

The low voltage compartment is located at the front above the switching device compartment. It is completely separated from the rest of the panel and can be removed.

 

The electrical connections between the withdrawable unit and the fixed part of the panel are made with flexible wires and a fixed-mounted 64-pin low-voltage plug connection.

 

The secondary equipment is installed flush on the door of the low-voltage compartment, or on a mounting plate / DIN-rails inside the compartment. The wires are laid in wiring ducts with a sufficient cross-section.

2.   Benefits and features

 

	Benefits	Features
1	Saves Lives	q  All operations behind closed door
		q  Front door interlocks
		q  Internal arc classified switchgear
		q  Partition class PM
		q  Use of vacuum switching technology
2	Peace of Mind	q  Type testing of VCB inside the panel q  Factory assembled type-tested switchgear according to IEC 62271-200 q  Use of standard, worldwide components q  Quality management according to                 DIN EN ISO-9001 q  Design based on global best practice sharing and excellence
3	Saves Money	q  Maintenance-free 3AH5 & 3AH3 VCB
4	Increases Productivity	q  Service continuity category LSC2B
		q  Maintenance free 3AH5 & 3AH3 VCB

 

3.   Standards

IEC 62271-200	A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV Metallgekapselte Wechselstrom-Schaltanlagen für Nennspannungen über 1 kV bis 52 kV	VDE 0671-200
IEC 60694	Common clauses for high-voltage switchgear and controlgear standards Gemeinsame Bestimmungen für Hochspannungsschaltgeräte	VDE 0670 - 1000
IEC 62271-100	High-voltage alternating current circuit-breakers Hochspannungs-Wechselstrom-Leistungsschalter	VDE 0671-100
IEC 60529	Degree of protection provided by enclosures (IP-code) Schutzarten durch Gehäuse (IP-Code)	VDE 0470 – 1
IEC 62271-102	Alternating current disconnectors (isolators) and earthing switches Wechselstromtrennschalter und Erdungsschalter	VDE 0671-102
IEC 61243-5	Working under voltage - Voltage detectors – Part 5: Voltage detection systems Arbeiten unter Spannung - Spannungsprüfer - Teil 5: Spannungsprüfsysteme	VDE 0682 – 415
IEC 60044 -1	Current transformers Stromwandler	VDE 0414 – 1
IEC 60044 -2	Voltage transformers Spannungswandler	VDE 0414 – 2

4.   Particulars of the system and the installation

Installation...................................................................................................................... Indoor

Number of phases.................................................................................................................. 3

Busbar system....................................................................................... Single busbar system

 

Rated (Highest) voltage.................................................................................................. 36 kV

Operating (Nominal) voltage.......................................................................................... 33 kV

Rated short-duration power-frequency withstand voltage............................................. 70 kV

Rated lightning impulse withstand voltage.................................................................... 170 kV

Rated frequency............................................................................................................. 50 Hz

 

System neutral earthing............................................... Isolated or resonance earthed neutral

 

Ambient temperature...................................................................................................... 45 °C

 

Rated normal current of the busbar............................................................................. 2500 A

Max permissible busbar current at 45 °C..................................................................... 2500 A

 

Rated short-time withstand current................................................................................ 25 kA

Rated short-circuit duration................................................................................................. 1 s

Rated peak withstand current......................................................................................... 63 kA

Rated short-circuit breaking current............................................................................... 25 kA

Rated short-circuit making current................................................................................. 63 kA

 

Degree of protection for enclosure.................................................................................. IP4X

Degree of protection for Partitions................................................................................... IP2X

Loss of Service Continuity category ........................................................................... LSC2B

Partition Class .................................................................................................................... PM

 

Internal arc classification................................................................................................... IAC

Accessibility front / lateral ................................................................................................. AFL

Internal arc fault current  ............................................................................................... 25 kA

Arc-fault duration.............................................................................................................. 1.0 s

 

Type of installation ............................................................................................ Wall-standing

 

Cable access from ......................................................................................................... Front

 

Individual panel width................................................................................................ 1550 mm

Panel depth............................................................................................................... 2450 mm

Panel height intermediate panel................................................................................ 2400 mm

Panel height end panel............................................................................................. 2775 mm

Height of switchgear room ( min. )........................................................................... 3400 mm

 

Distance of end panel right to the lateral wall (25 kA).............................................. ≥100 mm

Distance to the rear wall............................................................................................. 200 mm

 

Color of switchgear................................................................................................ RAL 7032

 

Other details as per the scope of supply, single-line diagram and/or constructional data.

5.   Scope of Supply:

The switchgear is designed as a single-busbar to the enclosed Data Sheet.

Overview:

Item	Quantity	Typical No.		Description
5..	1		=HZ01	Switching device panel 2500 A
5..	1		=HZ02	Metering panel
5..	1		=HZ03	Switching device panel 2000 A
5..	1		=HZ04	Switching device panel 1250 A
5.5.	4		=HZ05	Switching device panel 2500 A
5.6.	1		=HZ00	Accessories

In the case of customer-specific design, it might be possible that individual points of the

switchgear descriptions are not valid anymore.

 

The offered scope of supply is equipped in detail as follows::

 

Item No.

Quantity

Description

Typical No.

 

5.1                 1              Incoming (2500 A)                                                             =HZ01

 

Max permissible feeder current at 45 °C: 2417 A

 

In order to reach the specified current this typical is equipped with

 

		forced ventilation.
5.1.1	1	Busbar Compartment
		Busbar cross-section Cu 3x80x10 mm
		with partition wall
5.1.2	1	Switching Device Compartment

 

 

1	Circuit breaker truck
	Truck for the circuit breaker
	Operating mechanism truck : Hand operated
	Auxiliary switch truck: 4 NC + 4 NO
1	Vacuum circuit breaker, Type 3AH
	VACUUM CIRCUIT-BREAKER 36KV POLE-CENTRE DISTANCE 350MM 31.5KA 2500A OPERATG.MECHAN. EK SECONDARY EQUIPMENT: OPERATING CYCLE COUNTER BREAKER TRIPPING SIGNAL 2 POSITION SWITCHES FOR SIGNAL: "CLOSING SPRING CHARGED" CLOSING SOLENOID WITH VARISTOR CIRCUITRY IN THE SECONDARY CIRCUIT VOLTAGE OF CLOSING SOLENOID DC 110 V, VOLTAGE OF 1st SHUNT RELEASE DC 110 V, VOLTAGE OF 2nd SHUNT RELEASE DC 110 V, VOLTAGE OF OPERATING MECHANISM AC 230V, AUXILIARY SWITCH 12NO+12NC SECONDARY CONNECTION 64 POLE PLUG CONNECTOR,   RATED LIGHTNING IMPULSE WITHSTAND VOLTAGE 195KV INSTEAD OF 170KV RATED SHORT-TIME FREQUENZ WITHSTAND VOLTAGE UD = 95KV INSTEAD OF 85KV RATED POWER FREQUENCY WITHSTAND VOLTAGE 95KV INSTEAD OF 70KV

 

 5.1.3             1               Connection Compartment

 

1	Panel connection
	Cable connection from bottom
	Number of cables per phase 4 cables
	Single-core cable max. 500 mm2

 

1	Capacitive voltage indicator on the connection side
	Capacitive voltage indication system, Type: LRM (VOIS+)

 

3	The current transformer in the connection compartment Designed as block type current transformer
	3 x 2 cores in L1/L2/L3
	Technical data: 36.0 kV / 25.0 kA / 1 s
	Primary current: 2000 A
	Secondary current: 1 A / 1 A
	Core 1: 15 VA / Cl. 0.5 / FS5
	Core 2: 15 VA / Cl. 5P / 10
	with capacitive voltage layer

 

5.1.4	1	Low Voltage Compartment,
	1	Multifunction Directional Over Current & Earth fault Protective  Relay with PROFIBUS (FMS) Type  7SJ6221 (Siemens – Germany).
	3	Analog Ammeter (0-2000)A , CL 1.5.
	2	Push-button (ON-OFF).
	3	Indicating lamps (ON-OFF – TRIP).
	1	Thermostat 230 VAC, 10 A with 2 CO Contacts.

  

 

5.1.5		Customer-specific designs
	1	Extra Isolation For 40.5kv CB

 

 

Item No.

Quantity

Description

Typical No.

  

5.2                 1            Metering Panel                                                                        =HZ02

	5.2.1           1                                   Busbar Compartment			Busbar cross-section Cu 1x80x10 mm with partition wall
			Current transformer in run of busbar Designed as block type current transformer assembled on the right-hand side
			3 x 2 cores in L1/L2/L3
			Technical data: 36.0 kV / 25.0 kA / 1 s
			Primary current: 2000 A
			Secondary current: 1 A / 1 A
			Core 1: 15 VA / Cl. 0.5 / FS5
			Core 2: 15 VA / Cl. 5P / 10

 

 

5.2.2           1             Switching Device Compartment

 

 

1	Metering truck with primary fuses
	Metering truck
	Operating mechanism truck : Hand operated
	Auxiliary switch truck: 6 NC + 6 NC
3	Voltage transformer, on truck With primary fuses.
	3 x 1-pole with earth-fault winding and damping resistor
	Primary voltage: 33.0 /√3 kV
	Voltage of secondary winding: 100 /√3 V: 50 VA / Cl. 0.5
	Voltage of earth-fault winding: 100 / 3 V: 20 VA / Cl. 3P

 

 

5.2.3            1             Connection Compartment

 

  

5.2.4		1	Low Voltage Compartment
	1			Digital Multimeter includes (KWH, CL. 0.5 - KVARH, CL.1.0 - P.F. – Hz,……) Type Elester-Alpha 1800 series.
	3			Analouge Ammeter (0-2000)A - CL 1.5.
	1			Analouge Voltmeter (0–36) KV, CL 1.5.
	1			Thermostat 230 VAC, 10 A with 2 CO Contacts.

 

 

Item No.

Quantity

Description

Typical No.

 

5.3                 1              EAF Outgoing (2000 A)                                                      =HZ03

 

Max permissible feeder current at 45 °C: 1810 A

 

5.3.1	1		Busbar Compartment
			Busbar cross-section Cu 3x80x10 mm
			with partition wall
5.3.2	1		Switching Device Compartment
		1		Circuit breaker truck
				Truck for the circuit breaker
				Operating mechanism truck : Hand operated
				Auxiliary switch truck: 4 NC + 4 NO
		1		Vacuum circuit breaker, Type 3AH
				VACUUM CIRCUIT-BREAKER 36KV F.120.000 MECH.OPERATING CYCLES POLE-CENTRE DISTANCE 350MM 31.5KA 2000A OPERATG.MECHAN. EK   1 SHUNT RELEASE SECONDARY EQUIPMENT: OPERATING CYCLE COUNTER BREAKER TRIPPING SIGNAL 2 POSITION SWITCHES FOR SIGNAL: "CLOSING SPRING CHARGED" CLOSING SOLENOID WITH VARISTOR CIRCUITRY IN THE SECONDARY CIRCUIT   VOLTAGE OF CLOSING SOLENOID DC 110V, VOLTAGE OF 1st SHUNT RELEASE DC 110V, VOLTAGE OF OPERATING MECHANISM AC 230V,   AUXILIARY SWITCH 12NO+12NC SECONDARY CONNECTION 64 POLE PLUG CONNECTOR,   RATED LIGHTNING IMPULSE WITHSTAND VOLTAGE 195KV INSTEAD OF 170KV RATED SHORT-TIME FREQUENZ WITHSTAND VOLTAGE UD = 95KV INSTEAD OF 85KV RATED POWER FREQUENCY WITHSTAND VOLTAGE 95KV INSTEAD OF 70KV

  

 

5.3.3             1               Connection Compartment

 

1	Panel connection
	Cable connection from bottom
	Number of cables per phase 3 cables
	Single-core cable max. 500 mm2

 

	3		The current transformer in the connection compartment Designed as block type current transformer
			3 x 2 cores in L1/L2/L3
			Technical data: 36.0 kV / 25.0 kA / 1 s
			Primary current: 2000 A
			Secondary current: 1 A / 1 A
			Core 1: 15 VA / Cl. 0.5 / FS5
			Core 2: 15 VA / Cl. 5P / 10
	1		Earthing switch on the cable connection
			Earthing switch with short-circuit making capability Short-circuit current and duration: 25 kA / 1 s
			Auxiliary switch: 4 NC + 4 NO
			Operating mechanism: Hand operated
			Electromagnetic interlocking: DC 110 V
			Mechanical padlocking
	3		Surge arrester
			Type: Siemens / 3EE SPECIAL-PURPOSE SURGE ARRESTER RATED VOLTAGE 52KV, ENERGY ABSORPTION.CAPACITY 10KJ/KV SHORT-CIRCUIT CURRENT STRENGTH 50KA VERSION F.FURNACE TRANSFORMERS Max. operating voltage: 36,0 kV
5.3.4		1		Low Voltage Compartment,
		1		Multifunction Directional Over Current & Earth fault Protective  Relay with PROFIBUS (FMS) Type  7SJ6221 (Siemens – Germany).
		1		Analog Ammeter (0-2000)A , CL 1.5.
		2		Push-button (ON-OFF).
		3		Indicating lamps (ON – OFF – TRIP).
		1		Thermostat 230 VAC, 10 A with 2 CO Contacts.

 

 

5.3.5		Customer-specific designs
	1	Extra Isolation For 40.5kv CB

 

 

 

 

Item No.

Quantity

Description

Typical No.

 

5.4                 1              LF Outgoing (1250 A)                                                      =HZ04

 

Max permissible feeder current at 45 °C: 1214 A

 

5.4.1	1		Busbar Compartment
			Busbar cross-section Cu 3x80x10 mm
			with partition wall
5.4.2	1		Switching Device Compartment
		1		Circuit breaker truck
				Truck for the circuit breaker
				Operating mechanism truck: Hand operated
				Auxiliary switch truck: 4 NC + 4 NO
		1		Vacuum circuit breaker, Type 3AH
				VACUUM CIRCUIT-BREAKER 36KV F.120.000 MECH.OPERATING CYCLES POLE-CENTRE DISTANCE 350MM 31.5KA 1250A OPERATES.MECHAN. EK   SECONDARY EQUIPMENT: OPERATING CYCLE COUNTER BREAKER TRIPPING SIGNAL 2 POSITION SWITCHES FOR SIGNAL: "CLOSING SPRING CHARGED" CLOSING SOLENOID WITH VARISTOR CIRCUITRY IN THE SECONDARY CIRCUIT 2 SHUNT RELEASES VOLTAGE OF CLOSING SOLENOID DC 110V, VOLTAGE OF 1st SHUNT RELEASE DC 110V, VOLTAGE OF 2nd SHUNT RELEASE DC 110V, VOLTAGE OF OPERATING MECHANISM AC 230V,   AUXILIARY SWITCH 12NO+12NC SECONDARY CONNECTION 64 POLE PLUG CONNECTOR,   RATED LIGHTNING IMPULSE WITHSTAND VOLTAGE 195KV INSTEAD OF 170KV RATED SHORT-TIME FREQUENZ WITHSTAND VOLTAGE UD = 95KV INSTEAD OF 85KV RATED POWER FREQUENCY WITHSTAND VOLTAGE 95KV INSTEAD OF 70KV

 

 

 

5.4.3             1               Connection Compartment

 

1	Panel connection
	Cable connection from bottom
	Number of cables per phase 2 cables
	Single-core cable max. 500 mm2

 

	3		The current transformer in the connection compartment Designed as block type current transformer
			3 x 2 cores in L1/L2/L3
			Technical data: 36.0 kV / 25.0 kA / 1 s
			Primary current: 400 A
			Secondary current: 1 A / 1 A
			Core 1: 15 VA / Cl. 0.5 / FS5
			Core 2: 15 VA / Cl. 5P / 10
	1		Earthing switch on the cable connection
			Earthing switch with short-circuit making capability Short-circuit current and duration: 25 kA / 1 s
			Auxiliary switch: 4 NC + 4 NO
			Operating mechanism: Hand operated
			Electromagnetic interlocking: DC 110 V
			Mechanical padlocking
	3		Surge arrester
			Type: Siemens / 3EK7 SURGE ARRESTER FOR DISTRIBUTION NETWORKS REFERENCE STANDARD: IEC, UR=42KV, IN=10KA Max. operating voltage: 36,0 kV
5.4.4		1		Low Voltage Compartment,
		1		Multifunction Directional Over Current & Earth fault Protective  Relay with PROFIBUS (FMS) Type  7SJ6221 (Siemens – Germany).
		1		Analog Ammeter (0-400)A, CL 1.5.
		2		Push-button (ON-OFF).
		3		Indicating lamps (ON – OFF – TRIP).
		1		Thermostat 230 VAC, 10 A with 2 CO Contacts.

 

 

5.4.5		Customer-specific designs
	1	Extra Isolation For 40.5kv CB

 

 

 

Item No.

Quantity

Description

Typical No.

 

5.5                 2              SVC Feeder (2500 A)                                                      =HZ05

 

Max permissible feeder current at 45 °C: 2417 A

In order to reach the specified current this typical is equipped with forced ventilation.

 

5.5.1	1		Busbar Compartment
			Busbar cross-section Cu 3x80x10 mm
			with partition wall
5.5.2	1		Switching Device Compartment
		1		Circuit breaker truck
				Truck for the circuit breaker
				Operating mechanism truck : Hand operated
				Auxiliary switch truck: 4 NC + 4 NO
		1		Vacuum circuit breaker, Type 3AH
				VACUUM CIRCUIT-BREAKER 36KV F.120.000 MECH.OPERATING CYCLES POLE-CENTRE DISTANCE 350MM 31.5KA 2500A OPERATG.MECHAN. EK   SECONDARY EQUIPMENT: OPERATING CYCLE COUNTER BREAKER TRIPPING SIGNAL 2 POSITION SWITCHES FOR SIGNAL: "CLOSING SPRING CHARGED" CLOSING SOLENOID WITH VARISTOR CIRCUITRY IN THE SECONDARY CIRCUIT   2 SHUNT RELEASES VOLTAGE OF CLOSING SOLENOID DC 110V, VOLTAGE OF 1st SHUNT RELEASE DC 110V, VOLTAGE OF 2nd SHUNT RELEASE DC 110V, VOLTAGE OF OPERATING MECHANISM AC 230V,   AUXILIARY SWITCH 12NO+12NC SECONDARY CONNECTION 64 POLE PLUG CONNECTOR,   RATED LIGHTNING IMPULSE WITHSTAND VOLTAGE 195KV INSTEAD OF 170KV RATED SHORT-TIME FREQUENZ WITHSTAND VOLTAGE UD = 95KV INSTEAD OF 85KV RATED POWER FREQUENCY WITHSTAND VOLTAGE 95KV INSTEAD OF 70KV

 

 

5.5.3             1               Connection Compartment

 

1	Panel connection
	Cable connection from bottom
	Number of cable per phase 4 cables
	Single-core cable max. 500 mm2

 

	3		Current transformer in the connection compartment Designed as block type current transformer
			3 x 2 cores in L1/L2/L3
			Technical data: 36.0 kV / 25.0 kA / 1 s
			Primary current: 2500 A
			Secondary current: 1 A / 1 A
			Core 1: 15 VA / Cl. 0.5 / FS5
			Core 2: 15 VA / Cl. 5P / 10
	1		Earthing switch on the cable connection
			Earthing switch with short-circuit making capability Short-circuit current and duration: 25 kA / 1 s
			Auxiliary switch: 4 NC + 4 NO
			Operating mechanism: Hand operated
			Electromagnetic interlocking: DC 110 V
			Mechanical padlocking
	3		Surge arrester
			Type: Siemens / 3EK7 SURGE ARRESTER FOR DISTRIBUTION NETWORKS REFERENCE STANDARD:IEC, UR=42KV, IN=10KA Max. operating voltage: 36,0 kV
5.5.4		1		Low Voltage Compartment,
		1		Multifunction Directional Over Current & Earth fault Protective  Relay with PROFIBUS (FMS) Type  7SJ6221 (Siemens – Germany).
		1		Analog Ammeter (0-2500)A , CL 1.5.
		2		Push-button (ON-OFF).
		3		Indicating lamps (ON – OFF – TRIP).
		1		Thermostat 230 VAC, 10 A with 2 CO Contacts.

  

5.5.5		Customer-specific designs
	1	Extra Isolation For 40.5kv CB

 

 

Item No.

Quantity

Description

Typical No.

  

5.6                                  Switchgear accessories                                                   =HZ00

 

	1	Standard accessory set consisting of:
		1 Hand crank for charging spring of circuit breaker
		1 Pushrod for actuating the ON/OFF push buttons
		1 Hand lever for moving withdrawable part
		1 Hand lever for earthing switch
		1 Socket spanner for high voltage and low voltage door
		1 Instruction manual
	2	One end wall, IAC 1,0 sec