Product Name : Medium Voltage
Product Description

To provide multiple choices for power transmission and distribution, Horng Yu (HYEC) manufacture fixed type and withdrawable AC Metal Enclosed Switchgear and Controlling Device applied to 3-phase rated voltage AC 12/24KV power system. Especially for safer and more convenient electricity usage, HYEC devotes to promoting Withdrawable MV switchgear (IS-24) which features more comprehensive and reliable function of control, monitoring, and protection on circuit.

IS-24 is in conformity of standard IEC 62271-200 (about medium voltage switchgear and controlgear in rated voltage range from 1kV to 52kV ). And it has been fully tested by International Laboratory Accreditation Cooperation (ILAC) and Taiwan Electric Research & Testing Center (TERTEC). IS-24 equips with comprehensive and reliable devices to prevent failure operation drastically. It is the best choice for power supply which provides safer power usage environment.

Product Introduction
VOLTAGE CLASS

VOLTAGE CLASS

Up to 36kV

CONTINUOUS CURRENT

CONTINUOUS CURRENT

Up to 2500A

RATED SHORT TIME WITHSTAND CURRENT (lk)

RATED SHORT TIME WITHSTAND CURRENT (lk)

Up to 31.5 kA

Modularization
  • Modularized design for each part of panels that the assembly failure decreases dramatically.
  • Modularized design makes materials stockable thus helping raise efficiency on production and shorten manufacture and delivery time.
Enclosure
  • 2.0t high corrosion resistant galvanized zinc alloyed steel adopts two-layer folding and bending technique which strengthen the structure.
  • It is fully certified with performance on arc, earthquake resistance, salt spray, and ground continuity.
Compartment
  • Separated compartments for primary apparatus such as CB compartment, Cable compartment, Busbar compartment, and Meter compartment.
  • Certification of LSC2B-PM, featuring interlock for safety.
Volume
  • Compact cubicle, min. width is 800mm, increasing plot ratio and reducing accommodation of substation.
Eco-friendly
  • Galvanized zinc alloyed steel cabinet held together with rivets without painting and welding which greatly reduces pollution to the environment.
  • There is no need to reorganize and replace busbar when replacing breaker, disconnecting switch, potential transformer components and so on.
Trolley
  • Equipped with racking trolley, CB, DS, and PT can move easily and rapidly thus shorten the duration of maintenance.
  • For high power consumption user, trolley can be equipped with electric operation to shorten duration of maintenance and labor cost.
Interlock
  • CB, control unit, earthing switch, and equipped with interlocks which prevent false operation and improve safety on maintenance.
  • Certified with the highest level of interlocking standard, the switchgear is secure and stable without further equipment.
NO.DescriptionUnitRated specification
1 Phase P 3
2 Rated Voltage (Ur) kV 12/24
3 Rated Current (Ir) A 630/ 1250/ 1600/ 2000/ 2500
4 Rated Frequency (Hz) Hz 50/60
5 Rated Short Time withstand Current (main circuit and earthing circuit) (Ik) kA 16/ 25/ 31.5
6 Rated Peak Short Circuit withstand Current (main circuit and earthing circuit) (Ip) kA 42/ 65/ 82
7 Rated Duration of Short Circuit (main circuit and earthing circuit) (tk) S 3
8 Rated Power Frequency Withstand Voltage (Ud) kV 28/ 50
9 Rated Lightning Impulse Withstand Voltage (Up) kV 75/ 125
10 IP rating (Cabinet door close/Open) Class IP4X/ IP2X
11 Rated supply voltage of closing and opening devices and of auxiliary and control circuits (Ua) V 110~220 AC/DC
12 Internal arc-fault test Rating of internal arc Class IAC
Accessible Type Class A Type(F、L、R)
Rated short time withstand current kA 16/25/31.5
Rated duration of short time withstand current S 0.5/1
13 Loss of service continuity category LSC2B
14 Partition type PM
15 Compartment CB compartment Interlock
Bus compartment Interlock
Cable compartment Interlock
16 Rating of earthing switch characteristics Class E1/E2
Class M1/M2
kA 25
S 3
17 Seismic (Earthquake) resistance g X-axis
Y-axis
Z-axis
(Value up to 7)
18 Electromagnetic compatibility (EMC) Class 3
19 Partial discharge pC ≦100
20 Ground continuity of enclosure (DC 30A) V ≦3
21 Corrosion resistance on salt spray Hr ≦1000
22 Dimension(W*D*H) mm 800×1910×2530
1000×1910×2530
  1. Namebar marked with manufacturer, panel name, and type
  2. 24kV wall insulating bushing
  3. Dashboard on LV compartment (explosion-proof front panel)
  4. Door Hinge
  5. Analog busbar system plate (Optional)
  6. Nameplate
  7. Explosion-proof front panel of CB compartment
  8. Inspection window of CB compartment
  9. Opening for CB operation (lockable)
  10. Mortice of CB trolley fixed position
  11. Inspection window of Spare compartment
  12. Spare compartment door (SPHC Painting)
  13. Opening for PT trolley operation (lockable)
  14. Door handle (optional: lock or power the prevention lock)
  15. Nameplate of CB rated current
  16. Emergency trip opening (optional)
  17. Emergency dismantlement screw of door interlock device
  18. Opening for earthing switch operation (lockable)
  19. Nameplate of PT specification
  20. Emergency dismantlement screw of front door of Spare compartment
  21. Electromagnetic lock of below rear door (optional)
  22. Upper rear panel
  23. Luminaire for Cable compartment (optional)
  24. Nameplate marked with panel name and type
  25. Below rear panel
  26. Inspection window

Prevent false CB operation when on load

The circuit breaker cannot be closed /tripped unless the racking trolley is completely in its test or service position.
The trolley cannot be racked in or out while the circuit breaker is closed.

Prevent closing the earthing switch when on load

The earthing switch cannot be closed unless the trolley is in the Disconnecting or Testing position.
It could effectively prevent earthing switch from closing by error.

Prevent power supply when the earthing switch closes

The trolley cannot be racked into the ON position unless the earthing switch is in the OFF position.

Prevent moving the movable portion when on load

The CB trolley cannot be moved when the door is opened or the breaker has left its Testing/ Service position. And because of mechanical interlock, secondary terminal blocks are locked on.

Prevent access to the compartment when on load

Cable terminal compartment can be opened when the breaker trolley in the disconnecting/ testing position and earthing switch closes. (Or check it is without load.)

Standard type reference

  1. This is standard incoming and outgoing design. Any inquiry or adjustment, please contact Horng Yu Electric.
  2. Earthing Switch is optional

DS PANEL

(DS+ES)

Main CB PANEL

(CB+PT)

FEEDER PANEL

(CB+ES)

JUNCTION PANEL

(Busbar)

TIE PANEL

(CB)

BUS RISER PANEL

(Busbar)

Earthing Switch (ES)

NO.DescriptionUnitRated specification
1 Rated Voltage (Ur) kV 12/24
2 Rated Short Time Withstand Current (lk) kA 25
3 Rated Duration of Short Circuit (tk) s 3
4 Rated Peak Withstand Current (lp) kA 65
5 Rated Power Frequency Withstand Voltage (Ud) kV 50
6 Rated Lightning Impulse Withstand Voltage (Up) kV 125
7 Electrical endurance Class E1/E2
8 Mechanical endurance Class M1/M2
9 ES status and position indication Modbus (RS 485) ‐‐‐‐ Optional
10 Electric operation ‐‐‐‐ Optional

Disconnecting Switch Trolley (DS)

NO.DescriptionUnitRated specification
1 Rated Voltage (Ur) kV 12/24
2 Rated Current (Ir) A 630/1250
3 Rated Short Time Withstand Current (Ik) kA 25
4 Rated Duration of Short Circuit (tk) s 3
5 Rated Peak Withstand Current (lp) kA 65
6 Rated Power Frequency Withstand Voltage (Ud) kV 50
7 Rated Lightning Impulse Withstand Voltage (Up) kV 125
8 Mechanical endurance Class M1/M2
9 DS status and position indication Modbus (RS 485) ‐‐‐‐ Optional
10 Electric operation ‐‐‐‐ Optional

PT Trolley

PT Trolley is well-designed, well-structured, user-friendly, and well-performed. The trolley can rack in and out rapidly to save replacement time. Medium voltage power fuse adopts diameter of 25mm, in length of 324mm micro fuse to install in insulating arm.

NO.DescriptionUnitRated specification
1 Rated Voltage (Ur) kV 12/24
2 Fuse Rated Current (Ir) A 2
3 PT Rated Capacity kVA 3~5
4 Rated Power Frequency Withstand Voltage (Ud) kV 50
5 Rated Lightning Impulse Withstand Voltage (Up) kV 125
6 Mechanical endurance Class M1/M2
7 PT trolley status and position indication Modbus (RS 485) ‐‐‐‐ Optional
8 Electric operation ‐‐‐‐ Optional

CB/DS/PT Maintenance Trolley

CB/DS Maintenance Trolley

When IS-24 is under maintenance and inspection, circuit breaker, disconnecting switch, and PT can be easily pulled out and placed on the trolley, which also helps IS-24 reconnect to power rapidly and efficiently.

Emergency Tripping Device
(Optional)

In emergency, you can trip the breaker by pressing the button even if switchgear door is closed.

Electric Operation Device of CB/ES/DS/PT Trolley
(Optional)

Trolley can rack in and out automatically by two operation modes "Local" and "Remote".

Interlock device of PT trolley
(Optional)

The interlock device can lock the trolley with the front door. The trolley can be racked in and out only when door is closed.

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