Medium Voltage Distribution

up to 36 kV

Selection Guide

L-TRI 5Indoor switch disconnectors

1 L-TRI EN

L-TRI 5 Introduction

Cable disconnector L-TRI 5...-D

a Base frameb Epoxy resin insulatorc Switch drive shaftd Main current path withn push rode Arcing chamber

The L-TRI 5 range of switch disconnectorsThe L-TRI 5 range of switch disconnectors, incorporating proven flat-chamber arcing technology, can perform a wide variety of switching functions in medium-voltage distribution systems. They are the result of more than 50 year’s experience in development and manufacture of switch disconnectors by Schneider Electric. The simple, low-maintenance and highly economic indoor switch disconnectors in the L-TRI 5 range have a proven service record, with hundreds of thousands of units installed and operating on a wide range of systems. L-TRI 5 switch disconnectors comply with the requirements of IEC 60694 (EN 60694) and IEC 60265-1 (EN 60265-1). Additionally, selected variants are available, complying with IEC 62271-105 (EN 62271-105).

The TRI 5 range of disconnectorsBy omitting the arc quenching device (flat explosion chamber and arcing blade), the L-TRI 5 switch disconnector can be used as a disconnector, type TRI 5. Because of the integrated rapid ON/OFF switching feature of the drive, the disconnector has the same short-circuit making capacity as the switch disconnector. TRI 5 disconnectors comply with the requirements of IEC 62271-102 (EN 62271-102).

Main applications for L-TRI 5L-TRI 5 switch disconnectors are designed for use in indoor medium- voltage switchgear systems. They have a making capacity and are suitable for switching:

■ load currents ■ currents in ring mains ■ transformers, cables and overhead lines.

L-TRI 5 switch disconnectors are the reliable and economic solution for refurbishment and maintenance programs, extensions, renewal or upgrading of personnel protection.

Special features of L-TRI 5 ■ high reliability and long service life ■ low operating cost due to long periods between maintenance procedures ■ space-saving design ■ high switching capability ■ low operating torques ■ suitable for use in in harsh climatic conditions ■ ideal as substitute for older switch disconnectors (ECOFIT measures) or

disconnectors ■ switch disconnector-fuse combination to IEC 62271-105 (EN 62271-105)

available.

e

d

b

a

c

2L-TRI EN

Cable disconnector L-TRI 5

L-TRI 5 Description

...-DLegend1 Base frame

2 Epoxy resin insulator

3 Switch drive shaft

4 Main current path with push rod

5 Arcing chamber

Design

above. The welded sectional steel frame (1) supports the epoxy resin insulators (2), the main current paths (4) and the arcing chamber (5). The frame also carries the switch drive shaft (3) with latching facility and the catch springs. The ribbed push rod with a very high creep resistance connects the switch shaft to the main current path.

Torsion spring disconnector (D-disconnector)Torsion springs are integrated in the switch shaft. Turning the shaft end charges the torsion springs with stored energy. At the end of the movement, a cam plate drives the catch and releases the stored energy to operate the switch. This means that the closing and opening speeds are independent of the operator. This ensures safe closing at all times, even on to a short circuit. Also safe breaking of rated normal and fault currents is ensured. In the end position there is a reliable catch through the stored energy drive. The drive angle is 90°.

Arcing chamber

chambers working on the hard-gas principle. The arc quenching facility is

arcing blade for each phase. The optimized design and the use of an improved quenching medium have allowed the dimensions to be reduced and the service life to be increased. For switch disconnectors with increased breaking

as an option.

4

5

1

2

3

L-TRI 5...-D 1.2.3.4.

5.6.

7.8.9.

10.11.

manufacturerbreaker typerated voltagerated insulationvoltagerated currentrated short-circuitcurrentrated frequencycontrol voltageserial numberstandarddate of manufacture

nameplate

Auxiliary switch HS3Switch disconnectors and integrated earth switches can be fitted with auxiliary switches type HS3 as 4-pole, 6-pole or 10-pole variants. The high switching capability allows the direct triggering of releases, locking magnets and attachments to motor drives (see technical data).

3 L-TRI EN

L-TRI 5 Accessories

Auxiliary switch (HS3) for switch disconnectors type L-TRI 5 and L-TRI 5F

Ratedvoltage kV

Ratedcurrent A

Pole centre spacing mm

Number of contacts4pole 6pole 10pole

12 400...2500

125

165

210, 250

■ ■ ■

■ ■ ■

17.5 400...2500 210, 250, 270 ■ ■ ■

24 400...1600165

250, 275, 300■■

■■ ■

36 630...1000 340, 370, 400 ■ ■ ■

Auxiliary switch (HS3) on the earth switchRated

voltage kVRated

current APole centre spacing mm

Number of contacts4pole 6pole 10pole

12 400...2500125165

210, 250

■ ■ ■

■ ■ ■

17.5 400...2500 210, 250, 270 ■ ■ ■

24 400...1600 165250, 275, 300

■■

■■ ■

36 630...1000 340, 370, 400 ■ ■ ■

Technical data

Auxiliary switch HS324 V DC 60 V DC 110 V DC 220 V DC 220 V AC

Switching capability 8 A 3 A 2 A 1 A 10 A

Short-circuit rating 1 kA 1 kA 1 kA 1 kA 1 kA

Time constant T=L/R <30 ms <30 ms <30 ms <30 ms -

Standard mounting variants for auxiliary switchesNormally, the auxiliary switch for the switch disconnector is mounted on the moving-contact side between phases L1 and L2. For type EA earth switches, the auxiliary switch is mounted on the moving-contact side of the disconnector between phases L2 and L3. For type ET earth switches, the auxiliary switch is mounted on the fixed-contact side between phases L1 and L2. Other mounting variants are available on request.

4-pole auxiliary switch attachment on a type ET earth switch

Auxiliary switch forET earth switch

Earthswitch ET

Earthswitch EA

Auxiliary switch for EAearth switch EA

Auxiliary switch forswitch disconnector

L1L2

L3

Characteristics of switch disconnectors (cable disconnectors)

1) With phase partitions2) Higher values on request.

4L-TRI EN

L-TRI 5 Selection tables

Typeto standardRated voltage Ur kV

L-TRI 5IEC 60265-1 (EN 60265-1)

12 17.5 24 36Rated frequencyRated lightning impulse withstand voltage

to earthbetween phases

frUp

Hz

kVkV

50/60

7575

50/60

9595

50/60

125125

50/60

170170

50/60

145145

Rated withstand alternating voltageacross the isolating gap

to earthbetween phases

Rated currentRated short-time current

across the isolating gap

1s3s

Ud

kV

kVkV

85

2828

lrkVA

Ik kAkA

32400 6302518

2518

1000 10004023

3223

1250 25004025

5035

110

383845

400 6302518

2518

1250 25004025

5035

145

505060

400 6302518

2518

1000 10004023

3223

195

7070

1250 16004025

4025

80630 10002014

2014

165

707080

630 10002014

2014

Rated peak currentRated short-circuit making currentNumber of operations at rated short-circuit making currentRated system breaking current for 20 cyclesSystem breaking current for 3 cyclesSystem breaking current for 200 cyclesRated ring main breaking currentRated transformer breaking current

IpIma

kAkA

nI1 A

6363

6363

2400

2630

AA

I2a

I3AA

32 3240010

63010

Rated cable and overhead line breaking currentRated earth-fault breaking currentRated cable and overhead line breaking currentunder earth-fault conditionsMechanical operations

I4a, I4b

I6a

AA

I6b A

50150

50150

86 86

n125 mm165210

mmmm

15001)

15001)

6363

8063

2630

2630

10050

12550

2630

2630

100032

100032

63010

63010

125035

250035

63010

63010

6363

6363

2400

2630

10045

12545

2630

2630

32 3240010

63010

125035

125035

63010

63010

50150

50150

86 86

50150

50150

86 86

1500 1500 1000 1000

50150

50150

86 86

50150

50150

86 86

1500 1500 1000 1000

6363

6363

2400

2630

6363

8063

2630

2630

32 3240010

63010

100032

100032

63010

63010

10037

10037

2630

2630

5020

5020

2630

2630

125035

160035

63010

63010

32100032

6306,3

6306,3

50285

50285

86 86

50150

50150

86 86

1500 1500

1) 1)

1500 1500

50150

50150

86 86

2570

2570

40 40

1000 1000 1000 1000

5020

5020

2630

2630

32100032

6306,3

6306,3

2570

2570

40 40

1000 1000

Pole centre spacing(3-pole switchgear)

Integrated earth switch

250270

mmmm

275300

mmmm

340370

mmmm

400 mm

Rated short-time current

Rated peak currentRated short-circuit making current

1s3s

Ik kAkA

IpIma

kAkA

2514

2514

6363

6363

25 2)

14 2)3223

6363

8080

3223

3223

8080

8080

2514

2514

6363

6363

3223

3223

8080

8080

1) 1)

2514

2514

6363

6363

25 2)

14 2)3223

6363

8080

3223

3223

8080

8080

2014

2014

5050

5050

2014

2014

5050

5050

5 L-TRI EN

L-TRI 5 Selection tables (cont.)

Typeto standardRated voltage Ur kV

L-TRI 5IEC 60265-1 (EN 60265-1)

12 17.5 24 36Rated frequencyRated lightning impulse withstand voltage

to earthbetween phases

frUp

Hz

kVkV

50/60

7575

50/60

9595

50/60

125125

50/60

170170

50/60

145145

Rated withstand alternating voltageacross the isolating gap

to earthbetween phases

Rated currentRated short-time current

across the isolating gap

1s3s

Ud

kV

kVkV

85

2828

lrkVA

Ik kAkA

32400 6302518

2518

1000 10004023

3223

1250 25004025

5035

110

383845

400 6302518

2518

1250 25004025

5035

145

505060

400 6302518

2518

1000 10004023

3223

195

7070

1250 16004025

4025

80630 10002014

2014

165

707080

630 10002014

2014

Rated peak currentRated short-circuit making currentNumber of operations at rated short-circuit making currentRated system breaking current for 20 cyclesSystem breaking current for 3 cyclesSystem breaking current for 200 cyclesRated ring main breaking currentRated transformer breaking current

IpIma

kAkA

nI1 A

6363

6363

2400

2630

AA

I2a

I3AA

32 3240010

63010

Rated cable and overhead line breaking currentRated earth-fault breaking currentRated cable and overhead line breaking currentunder earth-fault conditionsMechanical operations

I4a, I4b

I6a

AA

I6b A

50150

50150

86 86

n125 mm165210

mmmm

15001)

15001)

6363

8063

2630

2630

10050

12550

2630

2630

100032

100032

63010

63010

125035

250035

63010

63010

6363

6363

2400

2630

10045

12545

2630

2630

32 3240010

63010

125035

125035

63010

63010

50150

50150

86 86

50150

50150

86 86

1500 1500 1000 1000

50150

50150

86 86

50150

50150

86 86

1500 1500 1000 1000

6363

6363

2400

2630

6363

8063

2630

2630

32 3240010

63010

100032

100032

63010

63010

10037

10037

2630

2630

5020

5020

2630

2630

125035

160035

63010

63010

32100032

6306,3

6306,3

50285

50285

86 86

50150

50150

86 86

1500 1500

1) 1)

1500 1500

50150

50150

86 86

2570

2570

40 40

1000 1000 1000 1000

5020

5020

2630

2630

32100032

6306,3

6306,3

2570

2570

40 40

1000 1000

Pole centre spacing(3-pole switchgear)

Integrated earth switch

250270

mmmm

275300

mmmm

340370

mmmm

400 mm

Rated short-time current

Rated peak currentRated short-circuit making current

1s3s

Ik kAkA

IpIma

kAkA

2514

2514

6363

6363

25 2)

14 2)3223

6363

8080

3223

3223

8080

8080

2514

2514

6363

6363

3223

3223

8080

8080

1) 1)

2514

2514

6363

6363

25 2)

14 2)3223

6363

8080

3223

3223

8080

8080

2014

2014

5050

5050

2014

2014

5050

5050

L-TRI 5/12/1250/

6L-TRI EN

L-TRI 5 Dimension and weight

...-D

Reference dimension is „C” (pole centre spacing)

Weights in kg

A B C DWeight

ofL-TRI 5

Weight ofearth

switch966 630 250 700 57 13

966 630 210 600 55 12.5

766 630 210 600 55 12.5

L-TRI 5/12/2500/250-D

Weights in kg

Weight of L-TRI 5 Weight of earth switch68 13

L-TRI 5 Dimension and weight (cont.)

L-TRI 5, 24 kVL-TRI 5/24/400...1000/...-D

Reference dimension is „C” (pole centre spacing)

Weights in kg

Weight of

L-TRI 5

Weight of

earthswitch

Ir[A]

400/

630/

1000

400/630

L-TRI 5/24/1250/300-D

Weights in kg

A Weight of L-TRI 5 Weight of earth switch1066 60 15

966 60 15