Güral Elektrik Malzemeleri

* What are the reference standards for HV and MV disconnectors specification ?

The main reference standards, internationally recognized are the ones published by the IEC (International Electrotechnical Commission):

• IEC 60694 : common specifications for HV switchgear and controlgear standards
• IEC 62271-102 : Alternating current disconnectors and earthing switches
• IEC 60071-1 & 60071-2 : Insulation co-ordination
• IEC 60273 : Characteristic of indoor and outdoor post insulators for systems with nominal voltages greater than 1000 V
• Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1000 V
• IEC 60815 : Guide for the selection of insulators in respect of polluted conditions
• IEC 62271-2 Seismic qualification for rated voltages of 72,5 kv and above

* How to understand the notation of Güral HV and MV disconnectors ?

• About High Voltage Disconnectors Notation

Güral Elektrik High Voltage Disconnectors variants are named with abbreviations in the following order.

Notation

CBD Center Break Disconnectors.
TFP Pantograph Disconnectors with double scissors arms.
TFPK Pantograph Disconnectors with single scissors arms.
TFPA Pantograph Disconnectors with special single scissors arms for Ur = 245kV only.
EF Earthing Switches.

Suffixes I

None Normal Disconnector or switch.
E Disconnector with earthing switch, either on load or supply terminals.
EE Disconnector with two earthing switches, on load and supply terminals.

Suffixes II

None 3 phase disconnector.
e 1 phase disconnector.

Example 1

Abbreviation CBDEe 2000
Explanation Center Break Disconnector with earthing switch, Single phase disconnector at 2000A rated current.

Example 2

Abbreviation TFPK 2200
Explanation Pantograph Disconnector with single scissors arms, 3 phase disconnector at 2200A rated current.

• About Medium Voltage Disconnectors Notation

Güral Elektrik Medium Voltage Disconnectors variants are named with abbreviations in the following order.

• Rocking disconnectors

Notation

H: Outdoor, single or three phases,
D: Indoor , single or three phases,
A: Normal.
T: Integrated with one earthing switch.
TT: Integrated with two earthing switches.
S: Integrated with fuse-base .

• Centre break disconnectors

Notation

CBD: Centre break , three phases
CBDe: Centre break , single phase,
CBDE: Centre break, three phase, integrated with one side earthing switch .
CBDEe: Centre break, single phase, integrated with one side earthing switch .
CBDEE: Centre break, three phase, integrated with two sides earthing switch.
CBDEEe: Centre break, single phase, integrated with two sides earthing switch.

• Double break disconnectors

Notation

DBD: Double break , three phases
DBDe: Double break , single phase,
DBDE: Double break, three phase, integrated with one side earthing switch .
DBDEe: Double break, single phase, integrated with one side earthing switch .
DBDEE: Double break, three phase, integrated with two sides earthing switch.
DBDEEe: Double break, single phase, integrated with two sides earthing switch.

• Earthing switches

Notation

H: Outdoor, single or three phases,
D: Indoor , single or three phases,
TA: Earthing switch.

• Quick make earthing switches

Notation

H: Outdoor, single or three phases,
D: Indoor , single or three phases,
TA: Earthing switch,
Y: Integrated with quick make mechanism.

What are the reference standards for DC disconnectors specification ?

The main reference standards, internationally recognized are the ones published by the IEC (International Electrotechnical Commission):

• IEC 61992-1 : DC switchgear; General,
• IEC 61992-3 : DC switchgear; Indoor d.c. disconnectors , switch-disconnectors and earthing switches,
• IEC 61992-4 : DC switchgear; Outdoor d.c. disconnectors, switch-disconnectors and earthing switches,

How to understand the notation of Güral DC disconnectors ?

Güral Elektrik DC (direct current) Disconnectors variants are named with abbreviations in the following order.

Notation

DCN: Outdoor, without earthing switch,
DCE: Outdoor, integrated with one side earthing switch
DCEE: Outdoor, integrated with two sides earthing switches ,

What are the reference standards for Switch-Disconnectors and Switch-Fuse Combinations specification ?

The main reference standards, internationally recognized are the ones published by the IEC (International Electrotechnical Commission):

• IEC 60265-1 : Switches for rated voltages above 1kV and less than 52kV,
• IEC 62271-105 : Alternating current switch-fuse combinations,
• IEC 62271-102 : Alternating current disconnectors and earthing switches.

How to understand the notation of Switch-Disconnectors and Switch-Fuse Combinations ?

Güral Elektrik Switch- Disconnectors and Switch-Fuse Combinations variants are named with abbreviations in the following order.

• Outdoor Switch-Disconnectors and Switch-Fuse Combinations

Notation

H: Outdoor,
A: Normal ,
Y: On-Load,
S: With fuse-base,
K: With breaking whip,
T: With earthing switch

Example 1

Abbreviation HAY
Explanation Outdoor type, normal switch-disconnector.

Example 2

Abbreviation HAKY
Explanation Outdoor type, normal switch-disconnector with breaking whip.

• Indoor Switch-Disconnectors and Switch-Fuse Combinations

Notation

SD: Indoor , without earthing switch,
SDE: Indoor, integrated with one earthing switch ,
SFC: Indoor , Switch-Fuse Combination,
SFCE: Indoor, Switch-Fuse Combination integrated with one earthing switch ,

What are the reference standards for HV fuses and fuse mountings specification ?

The main reference standards, internationally recognized are the ones published by the IEC (International Electrotechnical Commission):

• IEC 60282-1 : High-voltage fuses- current limiting fuses,
• IEC 60787 : Application guide for the selection of high-voltage current- limiting fuse-links for transformer circuits ,
• IEC 60644 : Specification for high-voltage fuse-links for motor circuit applications
• IEC 60549 : High-voltage fuses for the external protection of shunt power capacitors

How to understand the notation of Güral HV fuses and fuse mountings ?

Güral Elektrik HV current-limiting fuses and fuse mountings variants are named with abbreviations in the following order.

• HV current-limiting fuses,

Notation

MGN: Outdoor, without striker,
MGM: Outdoor, with striker

• Fuse mountings,

Notation

H: Outdoor,
D: Indoor
SA: Fuse-base

Example

Abbreviation DSA
Explanation Indoor type fuse-base

What are the reference standards for Live Working Equipment specification ?

The main reference standards, internationally recognized are the ones published by the IEC (International Electrotechnical Commission):

• IEC 61111 : Matting of insulating material for electrical purposes ,
• IEC 60832 : Insulating poles (insulating sticks) and universal tool attachments (fittings) for live working ,
• IEC 61243-1 : Live working - Voltage detectors - Part 1: Capacitive type to be used for voltages exceeding 1 kV a.c.
• IEC 61243-2 : Live working - Voltage detectors - Part 2: Resistive type to be used for voltages of 1 kV to 36 kV a.c.

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