MEDIUM VOLTAGE · PRIMARY DISTRIBUTION

LHX 2.0UniSafe

Your plant’s power.
Control, compartment by compartment.

Air-insulated medium-voltage switchgear for indoor installation. LSC2B-PM metal-clad architecture, withdrawable apparatus and functional units for feeders, generators, transformers, motors and capacitor banks.

Explore functional units ↘Discuss your project ↗

12 / 17,5 / 24 kVIEC 62271-200 · LSC2B · PMTECHNICAL CATALOGUE / LHX 2.0 UniSafe

01 / TECHNICAL CHARACTERISTICS

VOLTAGES AND CURRENTS.
THE FULL COMPARISON.

Three voltage levels, 50/60 Hz rated frequency. Compare electrical performance, service conditions and reference standards.

General electrical characteristics

CATALOGUE VALUES

General electrical characteristics
Characteristic	Unit	12 kV	17.5 kV	24 kV
Rated voltage	kV	12	17.5	24
Rated insulation voltage	kV	12	17.5	24
Rated power-frequency withstand voltage	kV (1 min)	28 ⁽¹⁾	38	50
Rated lightning impulse withstand voltage	kV	75	95	125
Rated short-time withstand current	kA (3 s)	31.5–40 ⁽³⁾	31.5–40 ⁽³⁾	25–31.5 ⁽⁴⁾
Peak current	kA	80	80	80
Internal arc withstand current	kA (1 s)	31.5–40 ⁽³⁾	31.5–40 ⁽³⁾	25–31.5 ⁽⁴⁾
Rated branch currents	A	630	630	630
Rated branch currents	A	1250	1250	1250
Rated branch currents	A	1600	1600	1600
Rated branch currents	A	2000	2000	2000
Rated branch currents	A	2500	2500	2500 ⁽²⁾
Rated branch currents	A	3150	3150	—
Rated branch currents	A	3600 ⁽²⁾	3600 ⁽²⁾	—
Rated branch currents	A	4000 ⁽²⁾	4000 ⁽²⁾	—
Rated main busbar currents	A	1250	1250	1250
Rated main busbar currents	A	1600	1600	1600
Rated main busbar currents	A	2000	2000	2000
Rated main busbar currents	A	2500	2500	2500 ⁽²⁾
Rated main busbar currents	A	3150	3150	—
Rated main busbar currents	A	3600 ⁽²⁾	3600 ⁽²⁾	—
Rated main busbar currents	A	4000 ⁽²⁾	4000 ⁽²⁾	—

(1) Also available at 42 kV (1 min).
(2) With forced ventilation in the circuit-breaker compartment; a further fan is required at the rear of the switchboard for 4000 A versions.
(3) 31.5 kA standard; for 40 kA contact ICEL; a 50 kA version is also available with a different design.
(4) 25 kA standard; for 31.5 kA contact ICEL.

Earthing switch with making capacity

CATALOGUE VALUES

Earthing switch with making capacity
Characteristic	Unit	12 kV	17.5 kV	24 kV
Rated short-time withstand current	kA (3 s)	31.5	31.5	31.5
Rated short-time withstand current	kA (1 s)	40	40	–
Making capacity	kAp	80	80	80
Making capacity	kAp	125	125	–

Mechanical and electrical performance

CATALOGUE VALUES

Mechanical and electrical performance
Characteristic	Unit	Performance
Electrical life of earth contact	Class	E2 — up to 5 closing operations
Mechanical life of earth contact	Class	M0 — 1000 mechanical operations

Service conditions

Ambient temperature: +5 °C to +40 °C.
Relative humidity: 24-hour average up to 95%; monthly average up to 90%.
Water vapour pressure: 24-hour average up to 2.2 kPa; monthly average up to 1.8 kPa.
Normal, non-corrosive and uncontaminated atmosphere.
Altitude up to 1,000 m above sea level. For higher altitudes, the correction factors in IEC 62271-1 apply.
For different service conditions, contact ICEL.

Protection and construction

External enclosure IP4X; inside compartments IP2X, according to IEC 60529.
External surfaces RAL 7035, light grey; other colours on request.
Earthed structure, with truck earthing maintained throughout racking-in and racking-out.
Metal partitions and self-extinguishing insulating materials limit fire propagation.
Automatic metallic shutters operated by the VT truck movement are available as an option.
Insulating protections and coatings are available for live parts.

IEC reference standards

CATALOGUE VALUES

IEC reference standards
Subject	Reference
AC metal-enclosed switchgear and controlgear	IEC 62271-200
Common specifications	IEC 62271-1
Circuit-breakers	IEC 62271-100
Contactors	IEC 62271-106
Fuses	IEC 282-1
SF6 gas	IEC 60376
Earthing switch	IEC 62271-102
Level of insulation (coordination guide)	IEC 60071
Level of insulation (values)	IEC 62271-1 Table 1a
Internal arc	IEC 62271-200
Degrees of protection	IEC 60529
Current transformers	IEC 61869-2
Voltage transformers	IEC 61869-3
Current sensors	IEC 60044-8
Voltage sensors	IEC 60044-7

Rated level of insulation · IEC 62271-1 Table 1a

CATALOGUE VALUES

Rated level of insulation · IEC 62271-1 Table 1a
Rated voltage Ur (kV r.m.s.)	Rated short-duration power-frequency withstand voltage Ud (kV r.m.s.) · common value	Rated lightning impulse withstand voltage Up (kV peak) · common value
3.6	10	40
7.2	20	60
12	28	75
17.5	38	95
24	50	125

02 / ARCHITECTURE AND SEPARATION

THE SWITCHGEAR.
COMPARTMENT BY COMPARTMENT.

Busbars, apparatus and cables in separate compartments. A dedicated space for every function.

LHX 2.0 / SHEET 01

Compartments and components

Callouts: 1–9
Classification: LSC2B · PM

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 7

Busbar compartment

A continuous compartment along the switchgear houses the main electrolytic-copper busbars. Branch connections link them to the circuit-breaker’s upper isolating contacts.

Cable compartment

Flat electrolytic-copper branches connect the power cables to the circuit-breaker’s lower contacts. The compartment accommodates the earthing switch, current transformers and fixed voltage transformers. Single- or three-core cables, up to four per phase, can be used depending on voltage, unit dimensions and cable cross-section.

Circuit-breaker or contactor compartment

Single-pole epoxy-resin bushings connect the apparatus to the busbar and cable compartments. Metal shutters operate automatically as the truck moves. The optional fail-safe device prevents manual shutter opening when the withdrawable apparatus is absent. Padlocks are available on the upper shutters, lower shutters or both.

Auxiliaries and measurement

The low-voltage compartment houses instruments and auxiliary circuits. A separate compartment for withdrawable voltage transformers with fuses can be included. Typical units may contain up to seven compartments separated by metal partitions.

FOR THE DESIGNERThe power circuit. Busbars, contacts and connections.

LHX 2.0 / SHEET 14

Busbars and power connections

Callouts: 1–8
Classification: LSC2B · PM

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 12

LSC2B · service continuity

Separation of the busbar, circuit-breaker and cable compartments allows access to the circuit-breaker compartment while busbars and cables remain energised.

PM · metallic partitions

Metal partitions and shutters separate live parts from an open compartment.

Interlock-controlled front access

Front access for normal operation and maintenance is controlled by integral interlocks.

Tool-based side and rear access

Side and rear compartments require tools to access and specific procedures.

FOR THE DESIGNERService continuity categories and partition classes

Classifications
Category	Description
LSC1	Opening a main-circuit compartment requires the entire switchgear to be taken out of service.
LSC2A	Main busbars and adjacent functional units can remain energised.
LSC2B	In addition to busbars and adjacent units, the cable compartment can remain energised.
PM	Metallic partitions and shutters.
PI	Insulating partitions and shutters.

Straightforward installation

Cubicles are factory-assembled and tested: on site, they are secured to the floor, coupled and connected to external circuits.

Custom extensions

Adaptation units allow extensions to existing switchgear, including other manufacturers’ or discontinued equipment. Front-only access is available as an option.

Insulation and accessibility

Reinforced insulation of live parts and readily inspectable segregated compartments. Circuit-breakers, instrument transformers and terminals are accessible for inspection and maintenance.

03 / APPARATUS AND INTERLOCKS

SWITCHING, MEASUREMENT.
PROTECTION.

Circuit-breakers, contactors and instrument transformers. Explore their functions and interlocks.

Withdrawable circuit-breakers

Vacuum circuit-breakers with mechanical or magnetic actuators, and SF6 circuit-breakers. The truck allows racking-in and racking-out with the door closed. The metal structure supports the poles, operating mechanism and moving-contact drive.

Vacuum contactors up to 12 kV

Withdrawable devices for loads requiring frequent operation. A resin monobloc houses the vacuum interrupters, moving parts, mechanism, multi-voltage supply and accessories, and supports the fuses. Closing is prevented if a fuse is missing; operation of any of the three fuses automatically opens the contactor.

Earthing switch

Available in the cable compartment or on the main busbars of measurement and bus-tie units. It has short-circuit making capacity, front manual operation and a mechanical interlock with the circuit-breaker truck. Position is shown by a front mechanical indicator; key or electromechanical locks are available on request.

Current and ring-core transformers

Single-phase epoxy-resin CTs, normally on the load side of the apparatus, with a wound primary and one or more secondary cores. Burdens and accuracy classes suit the measurement and protection requirements. A capacitive socket for voltage indication is available. Closed- or split-core ring transformers normally detect earth-fault current.

Voltage transformers

Single- or two-pole epoxy-resin VTs for measurement and protection, with burdens and accuracy classes suited to the connected instruments. Withdrawable trucks are fitted with MV protection fuses. Metal separation from the other compartments allows fuse replacement while the switchgear remains in service.

Voltage presence indication

Lamps indicate voltage on the MV side. The signal comes from post insulators with capacitive sockets or the capacitive screen in the current transformers.

FOR THE DESIGNERInterlocks. Operation by operation.

Circuit-breaker closing only in the connected or isolated position.
Racking-in and racking-out prevented with the circuit-breaker closed.
Door opening prevented with the circuit-breaker connected or in an intermediate position.
Racking-in prevented with the compartment door open.
Anti-racking-in lock for a circuit-breaker with a lower rated current than the cubicle.

Earthing-switch closing prevented with the circuit-breaker connected or in an intermediate position.
Circuit-breaker racking-in prevented with the earthing switch closed.
Feeder door opening prevented with the earthing switch open.
Earthing-switch opening prevented with the feeder door open.

Connected/isolated position signalling contacts.
Anti-racking-in key lock.
Circuit-breaker opening and closing with the door closed.
Lock to prevent racking-in with the door open.

04 / FUNCTIONAL UNITS

SEVEN FUNCTIONS.
YOUR SCHEME TAKES SHAPE.

Select a unit to view single-line diagrams, dimensions, currents and equipment.

Incoming / outgoing

Incoming or outgoing unit with a withdrawable circuit-breaker and bottom cable entry.

LHX 2.0 / SHEET IF

IF · incoming and outgoing feeder

Unit: IF
Illustrated diagrams: 3

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 17

Incoming–outgoing unit · IF

CATALOGUE VALUES

Incoming–outgoing unit · IF
Characteristic	Unit	12–17.5 kV · 600 mm	12–17.5 kV · 750 mm	12–17.5 kV · 1000 mm	24 kV · 750 mm (1)	24 kV · 1000 mm (1)
Width	mm	600 ⁽¹⁾	750	1000	750	1000
Height	mm	2160	2160	2160	2160	2160
Height with gas exhaust duct	mm	2510	2510	2510	2600	2600
Depth	mm	1550	1550	1550	1900	1900
Rated current · 630	A	•	• ⁽¹⁾	—	•	—
Rated current · 1250	A	•	•	—	•	—
Rated current · 1600	A	—	•	—	—	•
Rated current · 2000	A	—	•	—	—	•
Rated current · 2500	A	—	—	•	—	•
Rated current · 3150	A	—	—	• ⁽²⁾	—	—
Rated current · 3600	A	—	—	• ⁽²⁾	—	—
Rated current · 4000	A	—	—	• ⁽²⁾	—	—
Earthing switch		•	•	•	•	•
Number of cables per phase	nr.	2	3	3	2	3

(1) ≤31.5 kA
(2) CT for 3150–4000 A: window type

Conventional bottom cable entry.
For deeper versions, 2000–2300 mm, contact ICEL.
Top cable and top busbar entry are not included in the standard design; a solution can be studied case by case.

IFM

Incoming / outgoing with measurement

Incoming or outgoing unit with measurement and bottom cable entry.

LHX 2.0 / SHEET IFM

IFM · feeder with measurement

Unit: IFM
Illustrated diagrams: 3

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 18

Incoming–outgoing unit with measurement · IFM

CATALOGUE VALUES

Incoming–outgoing unit with measurement · IFM
Characteristic	Unit	12–17.5 kV · 600 mm	12–17.5 kV · 750 mm	12–17.5 kV · 1000 mm	24 kV · 750 mm (1)	24 kV · 1000 mm (1)
Width	mm	600 ⁽¹⁾	750	1000	750	1000
Height	mm	2160	2160	2160	2160	2160
Height with gas exhaust duct	mm	2510	2510	2510	2600	2600
Depth	mm	1550	1550	1550	2900	2900
Rated current · 630	A	•	• ⁽¹⁾	—	•	—
Rated current · 1250	A	•	•	—	•	—
Rated current · 1600	A	—	•	—	—	•
Rated current · 2000	A	—	•	—	—	•
Rated current · 2500	A	—	—	•	—	•
Rated current · 3150	A	—	—	• ⁽²⁾	—	—
Rated current · 3600	A	—	—	• ⁽²⁾	—	—
Rated current · 4000	A	—	—	• ⁽²⁾	—	—
Earthing switch		•	•	•	•	•
Number of cables per phase	nr.	2	3	3	2	3

(1) ≤31.5 kA
(2) CT for 3150–4000 A: window type

Conventional bottom cable entry.
For deeper versions, 2000–2300 mm, contact ICEL.
Top cable and top busbar entry are not included in the standard design; a solution can be studied case by case.

Bus-tie

Unit for connecting busbar sections.

LHX 2.0 / SHEET BT

BT · bus tie

Unit: BT
Illustrated diagrams: 2

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 19

Bus-tie · BT

CATALOGUE VALUES

Bus-tie · BT
Characteristic	Unit	12–17.5 kV · 600 mm	12–17.5 kV · 750 mm	12–17.5 kV · 1000 mm	24 kV · 750 mm (1)	24 kV · 1000 mm (1)
Width	mm	600 ⁽¹⁾	750	1000	750	1000
Height	mm	2160	2160	2160	2160	2160
Height with gas exhaust duct	mm	2510	2510	2510	2600	2600
Depth	mm	1550	1550	1550	1900	1900
Rated current · 630	A	—	—	—	—	—
Rated current · 1250	A	•	•	—	•	—
Rated current · 1600	A	—	•	—	—	•
Rated current · 2000	A	—	•	—	—	•
Rated current · 2500	A	—	—	•	—	•
Rated current · 3150	A	—	—	• ⁽²⁾	—	—
Rated current · 3600	A	—	—	• ⁽²⁾	—	—
Rated current · 4000	A	—	—	• ⁽²⁾	—	—
Earthing switch		• ⁽⁴⁾	• ⁽⁴⁾	—	—	—

(1) ≤31.5 kA
(2) CT for 3150–4000 A: window type
(4) Only for 12 kV and 1250 A

Conventional.
Earthing switch and VT can be installed on all sizes with a deeper version (2000–2300 mm; contact ICEL).

BTM

Bus-tie with measurement

Bus-tie with measurement, in the deeper version.

LHX 2.0 / SHEET BTM

BTM · bus tie with measurement

Unit: BTM
Illustrated diagrams: 1

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 19

Bus-tie with measurement · BTM

CATALOGUE VALUES

Bus-tie with measurement · BTM
Characteristic	Unit	12–17.5 kV · 600 mm	12–17.5 kV · 750 mm	12–17.5 kV · 1000 mm	24 kV · 750 mm (1)	24 kV · 1000 mm (1)
Width	mm	600 ⁽¹⁾	750	1000	750	1000
Height	mm	2160	2160	2160	2160	2160
Height with gas exhaust duct	mm	2510	2510	2510	2600	2600
Depth	mm	2000	2000	2000	2300	2300
Rated current · 630	A	—	—	—	—	—
Rated current · 1250	A	•	•	—	•	—
Rated current · 1600	A	—	•	—	—	•
Rated current · 2000	A	—	•	—	—	•
Rated current · 2500	A	—	—	•	—	•
Rated current · 3150	A	—	—	—	—	—
Rated current · 3600	A	—	—	—	—	—
Rated current · 4000	A	—	—	—	—	—
Earthing switch		•	•	•	•	•

(1) ≤31.5 kA
(2) CT for 3150–4000 A: window type

Deeper version.

Bus-riser

Riser unit for busbar connection.

LHX 2.0 / SHEET BR

BR · bus riser

Unit: BR
Illustrated diagrams: 2

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 20

Bus-riser · BR

CATALOGUE VALUES

Bus-riser · BR
Characteristic	Unit	12–17.5 kV · 600 mm	12–17.5 kV · 750 mm	12–17.5 kV · 1000 mm	24 kV · 750 mm (1)	24 kV · 1000 mm (1)
Width	mm	600 ⁽¹⁾	750 ⁽¹⁾	1000	750	1000
Height	mm	2160	2160	2160	2160	2160
Height with gas exhaust duct	mm	2510	2510	2510	2600	2600
Depth	mm	1550	1550	1550	1900	1900
Rated current · 630	A	—	—	—	—	—
Rated current · 1250	A	•	•	—	•	—
Rated current · 1600	A	—	•	—	—	•
Rated current · 2000	A	—	•	—	—	•
Rated current · 2500	A	—	—	•	—	•
Rated current · 3150	A	—	—	•	—	—
Rated current · 3600	A	—	—	•	—	—
Rated current · 4000	A	—	—	•	—	—
Earthing switch		—	—	—	—	—

Conventional.
Double VT possible with a deeper version (2000–2300 mm; contact ICEL).

BRM

Bus-riser with measurement

Bus-riser unit with measurement.

LHX 2.0 / SHEET BRM

BRM · bus riser with measurement

Unit: BRM
Illustrated diagrams: 2

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 20

Bus-riser with measurement · BRM

CATALOGUE VALUES

Bus-riser with measurement · BRM
Characteristic	Unit	12–17.5 kV · 600 mm	12–17.5 kV · 750 mm	12–17.5 kV · 1000 mm	24 kV · 750 mm	24 kV · 1000 mm
Width	mm	600	750	1000	750	1000
Height	mm	2160	2160	2160	2160	2160
Height with gas exhaust duct	mm	2510	2510	2510	2600	2600
Depth	mm	1550	1550	1550	1900	1900
Rated current · 630	A	—	—	—	—	—
Rated current · 1250	A	•	—	—	•	—
Rated current · 1600	A	—	—	—	—	—
Rated current · 2000	A	—	—	—	—	—
Rated current · 2500	A	—	—	—	—	—
Rated current · 3150	A	—	—	—	—	—
Rated current · 3600	A	—	—	—	—	—
Rated current · 4000	A	—	—	—	—	—
Earthing switch		—	—	—	—	—

Conventional.
Double VT, with one set in the circuit-breaker compartment, possible with a deeper version (2000–2300 mm; contact ICEL).

Measurement

Unit dedicated to voltage transformers and measurement functions.

LHX 2.0 / SHEET M

M · measurement unit

Unit: M
Illustrated diagrams: 1

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 21

Measurement unit · M

CATALOGUE VALUES

Measurement unit · M
Characteristic	Unit	12–17.5 kV · 600 mm	12–17.5 kV · 750 mm	12–17.5 kV · 1000 mm	24 kV · 750 mm (1)	24 kV · 1000 mm (1)
Width	mm	600 ⁽¹⁾	750	1000	750	1000
Height	mm	2160	2160	2160	2160	2160
Height with gas exhaust duct	mm	2510	2510	2510	2600	2600
Depth	mm	1550	1550	1550	1900	1900
Rated current ⁽³⁾ · 630	A	—	—	—	—	—
Rated current ⁽³⁾ · 1250	A	—	—	—	—	—
Rated current ⁽³⁾ · 1600	A	—	—	—	—	—
Rated current ⁽³⁾ · 2000	A	—	—	—	—	—
Rated current ⁽³⁾ · 2500	A	—	—	—	—	—
Rated current ⁽³⁾ · 3150	A	—	—	—	—	—
Rated current ⁽³⁾ · 3600	A	—	—	—	—	—
Rated current ⁽³⁾ · 4000	A	—	—	—	—	—
Earthing switch		•	•	—	•	—
Number of cables per phase	nr.	—	—	—	—	—
CT per phase · 1 short size		—	—	—	—	—
CT per phase · 1 long size		—	—	—	—	—
CT per phase · 2 short size		—	—	—	—	—
CT per phase · 1 short and 1 long size		—	—	—	—	—
VT per phase · 1 fixed		—	—	—	—	—
VT per phase · 2 fixed		—	—	—	—	—
VT per phase · 1 fixed with fuses		—	—	—	—	—
VT per phase · 1 withdrawable with fuses ⁽²⁾		•	•	—	•	—
VT per phase · 1 fixed and 1 withdrawable with fuses		—	—	—	—	—

(1) ≤31.5 kA version
(2) Withdrawable VT in apparatus compartment
(3) At 12–17.5 kV, branch current is 630 A for main busbar current up to 1250 A, and 1250 A for main busbar current from 1600 A.

Conventional.
CT and VT rows indicate alternative combinations.

FOR THE DESIGNERThe complete range. Voltage, current and width.

General technical data · 12 kV

CATALOGUE VALUES

General technical data · 12 kV
Type	Description	600 mm · 400–630 A	600 mm · 1250 A	750 mm · 630 A	750 mm · 1250 A	750 mm · 1600 A	750 mm · 2000 A	1000 mm · 2500 A	1000 mm · 3150 A	1000 mm · 3600 A	1000 mm · 4000 A
IF	Incoming / outgoing feeder	2-3-4	3-4	3-4	3-4	3-4	3-4	3-4	3	3	3
IFM	Incoming / outgoing feeder with measurement	2-3-4-6	3-4-6	3-4-6	3-4-6-7	3-4-6-7	3-4-6-7	3-4-6-7	3-6	3-6	3-6
BR	Bus-riser	9	8	9	8	8	8	8	8	8	8
BRM	Bus-riser with measurement	9	5	9	7	7	7	7	9	9	9
M	Measurement	5	9	9	5	9	9	9	9	9	9
BT	Bus-tie	9	3-4	9	3-4	3-4	3-4	3-4	3	3	3
BTM	Bus-tie with measurement	9	3-4-7	9	3-4-7	3-4-7	3-4-7	3-4-7	3	3	3

(2) Available with ConVac
(3) Available with HD4 and VD4
(4) Available with VM1
(5) With metering truck
(6) With VT compartment in the standard solution
(7) With VT compartment in deeper solution
(8) Available
(9) Not available

General technical data · 17.5 kV

CATALOGUE VALUES

General technical data · 17.5 kV
Type	Description	600 mm · 400–630 A	600 mm · 1250 A	750 mm · 630 A	750 mm · 1250 A	750 mm · 1600 A	750 mm · 2000 A	1000 mm · 2500 A	1000 mm · 3150 A	1000 mm · 3600 A	1000 mm · 4000 A
IF	Incoming / outgoing feeder	3-4	3-4	3-4	3-4	3-4	3-4	3-4	3	3	3
IFM	Incoming / outgoing feeder with measurement	3-4-6	3-4-6	3-4-6	3-4-6-7	3-4-6-7	3-4-6-7	3-4-6-7	3-6	3-6	3-6
BR	Bus-riser	9	8	9	8	8	8	8	8	8	8
BRM	Bus-riser with measurement	9	5	9	7	7	7	7	9	9	9
M	Measurement	5	9	9	5	9	9	9	9	9	9
BT	Bus-tie	9	3-4	9	3-4	3-4	3-4	3-5	3	3	3
BTM	Bus-tie with measurement	9	3-4-7	9	3-4-7	3-4-7	3-4-7	3-4-7	3	3	3

(3) Available with HD4 and VD4
(4) Available with VM1
(5) With metering truck
(6) With VT compartment in the standard solution
(7) With VT compartment in deeper solution
(8) Available
(9) Not available

General technical data · 24 kV

CATALOGUE VALUES

General technical data · 24 kV
Type	Description	750 mm · 630 A	750 mm · 1250 A	1000 mm · 1600 A	1000 mm · 2000 A	1000 mm · 2500 A
IF	Incoming / outgoing feeder	1-2	1-2	1-2	1-2	1-2
IFM	Incoming / outgoing feeder with measurement	1-2-4	1-2-4-5	1-2-4	1-2-4	1-2-4
BR	Bus-riser	7	6	6	6	6
BRM	Bus-riser with measurement	7	3	7	7	7
M	Measurement	3	7	7	7	7
BT	Bus-tie	7	1-2	1-2	1-2	1-2
BTM	Bus-tie with measurement	7	1-2-5	7	7	7

(1) Available with HD4 and VD4
(2) Available with VM1
(3) With metering truck
(4) With VT compartment in the standard solution
(5) With VT compartment in deeper solution
(6) Available
(7) Not available

05 / STRUCTURE AND WEIGHTS

A SOLID STRUCTURE.
IN EVERY DETAIL.

Materials, thicknesses and finishes. Know the switchgear inside and out.

Supporting frame, compartments, partitions, shutters, auxiliary wiring and gas exhaust ducts, flaps, instrument supports and end panels. Painted end panels available on request.

Pre-galvanised steel
Characteristic	Value
Type	UNI EN 10346 DX51D+Z275
Thickness	2 mm; selected details 0.8 or 1.5 mm
Average weight	310–350 kg

LHX 2.0 / SHEET 02

Pre-galvanized steel structure

Steel: UNI EN 10346 DX51D+Z275
Thickness: 2 mm
Thickness of selected parts: 0.8 / 1.5 mm
Average weight: 310–350 kg

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 9

Doors for the instrument, circuit-breaker and cable compartments. Closing panels on the switchgear end units may be galvanised or painted.

Painted steel
Characteristic	Value
Type	UNI EN 10130 DC01-B-m
Door thickness	3 mm
Other components	2 mm
Doors and end-cover colour	RAL 7035
Horizontal band colour	RAL 7012
Weight	52–60 kg

LHX 2.0 / SHEET 03

Panels and doors

Steel: UNI EN 10130 DC01-B-m
Door thickness: 3 mm
Other components: 2 mm
Weight: 52–60 kg

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 10

FOR THE DESIGNERWeights by voltage, width and depth

Weights excluding apparatus

CATALOGUE VALUES

Weights excluding apparatus
Rated voltage (kV)	Unit width (mm)	Unit depth (mm)	Weight (kg)
12	600	1550	400–450
12	600	2000	500–550
12	750	1550	450–500
12	750	2000	570–620
12	1000	1550	550–600
12	1000	2000	700–750
17.5	600	1550	400–450
17.5	600	2000	500–550
17.5	750	1550	450–500
17.5	750	2000	570–620
17.5	1000	1550	550–600
17.5	1000	2000	700–750
24	750	1900	500–550
24	750	2300	580–630
24	1000	1900	600–650
24	1000	2300	700–750

Indicated weights do not include apparatus: circuit-breakers, contactors, VT, CT, measuring sensors or auxiliary apparatus.

LHX 2.0 / SHEET 04

Internal side view

Classification: LSC2B · PM

Illustrative drawing · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 15

06 / INTERNAL ARC AND GAS EXHAUST

THE RIGHT SPACE.
INCLUDING GAS EXHAUST.

Outdoor ducts or top chimneys: the installation arrangements available for LHX.

IAC ACCESSIBILITY A

The switchgear is classified IAC, accessibility type A, according to IEC 62271-200, and satisfies criteria 1 to 5.

LHX 2.0 / SHEET 12

Outdoor gas exhaust

Minimum room height: ≥ 2 700 mm
Layout examples: 3

Dimensions in mm · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 23

LHX 2.0 / SHEET 13

Duct with top chimneys

Room at 12–17.5 kV: ≥ 3 100 mm
Room at 24 kV: ≥ 3 200 mm
Room at 40 kA: ≥ 3 600 mm
Front / rear space: ≥ 1 500 / ≥ 100 mm

Dimensions in mm · not to scale. Confirm against project drawings.Catalogue V2.0 / p. 23

Gas exhaust arrangements

CATALOGUE VALUES

Gas exhaust arrangements
Arrangement	Source dimension
Standard duct · examples 1, 2 and 3	h ≥2700 mm
Top chimneys · 12–17.5 kV	h ≥3100 mm ⁽¹⁾
Top chimneys · 24 kV	h ≥3200 mm
Top-chimney arrangement · rear clearance	≥100 mm
Top-chimney arrangement · front clearance	≥1500 mm

(1) At 40 kA: h ≥3600 mm

FOR THE DESIGNERDucts: extensions, supports and exhaust area

The metal roof duct collects gases and normally extends at the right and left ends of the switchgear. The recommended arrangement carries the exhaust outside the substation.
Where outlets face accessible areas or installed equipment, ducts must be extended to zones that do not endanger people or machinery.
Extensions must have at least the same cross-section as the switchgear ducts, withstand at least 80 kPa and be properly supported. Bends must be limited to necessary cases and use the largest practicable radius.
The exhaust area must be protected from access by people. Channel outlets must prevent entry of water, dust, small animals and foreign bodies.

07 / CHECKS AND TESTING

FROM ENGINEERING.
TO FACTORY TESTING.

Type tests performed at CESI and ABB laboratories. Contact ICEL for details.

Standard factory checks

Visual inspection
Mechanical operating sequences
Wiring checks
Electrical operating sequences
Insulation and dielectric tests

IEC 62271-200 test references

CATALOGUE VALUES

IEC 62271-200 test references
Test
Verification of the insulation level of the equipment
Temperature-rise tests and measurement of circuit resistance
Main and earthing circuits subjected to rated peak and short-time withstand currents
Making and breaking capacity of included switching devices
Satisfactory operation of switching devices and removable parts
Verification of the IP protection code
Verification of auxiliary and control circuits
Effects of arcing due to an internal arc fault (IAC-classified switchgear and controlgear)

08 / APPLICATIONS

WHERE POWER IS NEEDED.
WHERE CONTROL MATTERS.

Utilities and power plants

Power stations
Generator switchgear
Transformer stations
Main and auxiliary switchboards

Industry

Services and infrastructure

Hospitals
Infrastructure
Data centres

Transport

Airports
Ports
Railways

QUALITY AND LIFE CYCLE

LASTING QUALITY.
THROUGH END OF LIFE.

Manufactured under ISO 9001 and ISO 14001 management systems, with a quality certificate available on supply. Service life may reach 30 years when the prescribed maintenance instructions are followed.

ICEL provides guidance on recycling and disposal. Applicable local requirements must be followed at end of life.

CATALOGUE REFERENCEMaterial by material. Through end of life.

Materials and recycling or disposal methods at end of life.

Materials and end of life — catalogue, p. 25
Material	Route stated in the catalogue
Metals: Fe, Cu, Al, Ag, Zn, W and others	Separate collection and recycling
Thermoplastics	Recycling or disposal
Epoxy resin	Separation of metal and disposal of the remainder
Rubber	Disposal
Transformer dielectric oil	Removal from equipment, followed by recycling or disposal
SF6 gas	Recovery from equipment, followed by recycling or disposal
Wood packaging	Recycling or disposal
Foil packaging	Recycling or disposal

09 / FAQ

PROJECT QUESTIONS.
CLEAR ANSWERS.

Information to support the selection of your medium-voltage solution.

Let’s discuss your plant ↗

When should I choose LHX 2.0 UniSafe for primary MV distribution?

It is ICEL’s air-insulated medium-voltage switchgear for indoor installation and primary distribution. It is classified LSC2B-PM and includes 12, 17.5 and 24 kV versions for feeders, generators, transformers, motors and capacitor banks.

Which functional units are available?

The range includes IF and IFM incoming/outgoing units, BT and BTM bus-tie units, BR and BRM bus-riser units and M measurement units. Measurement versions and dimensional combinations are listed in their respective tables.

What does LSC2B-PM separation provide?

The busbar, circuit-breaker and cable compartments are separated. LSC2B allows access to the circuit-breaker compartment while busbars and cables remain energised; PM identifies metallic partitions and shutters.

Which type tests and checks are documented for LHX 2.0 UniSafe?

The catalogue states that type tests were performed at CESI and ABB laboratories and lists standards, standard tests and internal arc classification. It also describes factory checks of construction, mechanical and electrical sequences, wiring, insulation and dielectric withstand. Documentation must be related to the voltage, unit and supply configuration.

How are cables connected in IF and IFM units?

The conventional arrangement uses bottom cable entry. Top cable or busbar entry can be studied with ICEL case by case. Deeper versions from 2,000 to 2,300 mm are available.

Which apparatus is used in the licensed ABB medium-voltage solution?

LHX 2.0 UniSafe is part of ICEL’s MV range using licensed ABB technology. Withdrawable vacuum or SF6 circuit-breakers are available. Vacuum circuit-breakers may use mechanical or magnetic actuators. Withdrawable vacuum contactors with fuses are also available up to 12 kV. Combinations are checked against the tables for the specific unit.

Do the listed weights include the apparatus?

No. The weight table excludes circuit-breakers, contactors, voltage and current transformers, measuring sensors and auxiliary apparatus.

Which room constraints are needed to design the installation?

Send the room layout and height, access routes, cable routing and gas-exhaust options. The catalogue distinguishes exhaust ducts and chimneys and lists different clearances by voltage and configuration. Clearances are selected for the proposed solution, together with unit dimensions and operating space.

What should I send for an LHX 2.0 UniSafe quotation?

Start with the single-line diagram, voltage, rated current, short-circuit level and unit functions. Add protection and metering requirements, cable data, room constraints and the specification. ICEL checks the configuration against the catalogue tables and develops the technical proposal.

LHX 2.0 UniSafe / DIGITAL CATALOGUEICEL technical catalogue · LHX 2.0 UniSafe

Data and illustrations are not binding. ICEL reserves the right to make changes during product development.

YOUR NEXT PROJECT STARTS HERE

LET’S GIVE
YOUR IDEAS
POWER.

A project to develop, a partnership to propose or a question to ask. Let’s start here.

01 / Tell us what you need

02 / Share the relevant documents

03 / Let’s define the solution

info@icelsistemielettrici.it ↗+39 030 216 6611

LHX 2.0UniSafe

VOLTAGES AND CURRENTS.THE FULL COMPARISON.

General electrical characteristics

Earthing switch with making capacity

Mechanical and electrical performance

Service conditions

Protection and construction

IEC reference standards

Rated level of insulation · IEC 62271-1 Table 1a

THE SWITCHGEAR.COMPARTMENT BY COMPARTMENT.

Busbar compartment

Cable compartment

Circuit-breaker or contactor compartment

Auxiliaries and measurement

LSC2B · service continuity

PM · metallic partitions

Interlock-controlled front access

Tool-based side and rear access

Straightforward installation

Custom extensions

Insulation and accessibility

SWITCHING, MEASUREMENT.PROTECTION.

Withdrawable circuit-breakers

Vacuum contactors up to 12 kV

Earthing switch

Current and ring-core transformers

Voltage transformers

Voltage presence indication

SEVEN FUNCTIONS.YOUR SCHEME TAKES SHAPE.

Incoming / outgoing

Incoming–outgoing unit · IF

Incoming / outgoing with measurement

Incoming–outgoing unit with measurement · IFM

Bus-tie

Bus-tie · BT

Bus-tie with measurement

Bus-tie with measurement · BTM

Bus-riser

Bus-riser · BR

Bus-riser with measurement

Bus-riser with measurement · BRM

Measurement

Measurement unit · M

General technical data · 12 kV

General technical data · 17.5 kV

General technical data · 24 kV

A SOLID STRUCTURE.IN EVERY DETAIL.

Weights excluding apparatus

THE RIGHT SPACE.INCLUDING GAS EXHAUST.

Gas exhaust arrangements

FROM ENGINEERING.TO FACTORY TESTING.

Standard factory checks

IEC 62271-200 test references

WHERE POWER IS NEEDED.WHERE CONTROL MATTERS.

Utilities and power plants

Industry

Services and infrastructure

Transport

LASTING QUALITY.THROUGH END OF LIFE.

PROJECT QUESTIONS.CLEAR ANSWERS.

LET’S GIVEYOUR IDEASPOWER.

YOUR PRIVACY.YOUR CHOICE.

VOLTAGES AND CURRENTS.
THE FULL COMPARISON.

THE SWITCHGEAR.
COMPARTMENT BY COMPARTMENT.

SWITCHING, MEASUREMENT.
PROTECTION.

SEVEN FUNCTIONS.
YOUR SCHEME TAKES SHAPE.

A SOLID STRUCTURE.
IN EVERY DETAIL.

THE RIGHT SPACE.
INCLUDING GAS EXHAUST.

FROM ENGINEERING.
TO FACTORY TESTING.

WHERE POWER IS NEEDED.
WHERE CONTROL MATTERS.

LASTING QUALITY.
THROUGH END OF LIFE.

PROJECT QUESTIONS.
CLEAR ANSWERS.

LET’S GIVE
YOUR IDEAS
POWER.

YOUR PRIVACY.
YOUR CHOICE.