Schneider HVX12-25-06E150 Vacuum Circuit-Breaker

Product: EvoPacT HVX Indoor Medium-Voltage Vacuum Circuit-Breaker (Trolley-type), compatible with KYN28-12 switchgear cabinet.

Model Decoding HVX12-25-06E150

Field	Meaning
HVX	Schneider embedded‑pole vacuum circuit‑breaker series
12	Rated voltage 12 kV
25	Rated short‑circuit breaking current 25 kA
6	Rated current 630 A
E	Trolley‑type (withdrawable); F = Fixed‑type
150	Phase‑to‑phase distance 150 mm (KYN28 standard 150 mm; 210 mm option available)

Core Technical Parameters

Item	Specification
Rated voltage Ur	12 kV
Rated current Ir	630 A
Rated short‑circuit breaking current Isc	25 kA
Short‑time withstand current	25 kA‑3 s
Lightning impulse withstand voltage	75 kV
Power‑frequency withstand voltage	42 kV
Phase‑to‑phase distance	150 mm
Configuration	Withdrawable trolley type E
Mechanical endurance	Class M2 ≥20 000 operations
Electrical endurance	Class E2; Class C2 – Frequent capacitor switching capability
Main‑circuit resistance (Type E)	≤80 μΩ
Intrinsic opening time	30‑60 ms; Closing time 40‑70 ms

Coil voltages shall be specified at order: common options DC220V / AC220V. Scope includes charging motor, closing coil and opening coil. Optional: K0 anti-pumping function, Y1 closing-blocking solenoid.

Application

For 10 kV KYN28-12 switchgear, applied to transformer, cable, motor and capacitor circuits. Widely used in industrial & mining power distribution, substations, petro-chemical plants. Complies with GB1984 and IEC62271-100 standards.

Replacement & Compatibility

Domestic equivalent: VS1-12/630-25 (trolley-type, 150 mm phase spacing). Verify operating mechanism, secondary connector and trolley dimensions.
Schneider upgraded variant: New-generation EvoPacT HVX-D digital version, equipped with condition-monitoring function.

Maintenance & Inspection Checklist

Contact-resistance test: ≤80 μΩ for Type E-630A. Exceedance requires inspection of contact fingers, tulip contacts and main-circuit bolt torque.
Mechanical-characteristic test: opening/closing time, contact bounce, stroke and over-travel.
Power-frequency withstand-voltage test for vacuum interrupter.
Verify trolley interlock (insert/extract) and integrity of secondary connector.
Complete Ordering Configuration for HVX12-25-06E150

Base model: HVX12-25-06E150 (12 kV / 630 A / 25 kA, withdrawable trolley-type, 150 mm phase spacing, for KYN28-12 cabinet)

🔹Mandatory Secondary Voltage (must be defined in purchase order)

Component	Common Voltage Options	Remarks
Charging motor M1	DC220V / AC220V	Spring‑energy‑store drive
Closing coil F2	DC220V / AC220V	Closing actuation
Opening coil F11	DC220V / AC220V	Main opening coil

Standard supply: 1× opening coil F11. Dual-trip configuration: F11+F12.

🔹Standard Factory-Fitted Scope

Auxiliary switch: 4 NO + 4 NC (S11/S12)
Spring-charged position switch S2 (charged / discharged signal)
Trolley-position switch S6 (test position / service-position signal)
Trolley chassis mechanism, secondary aviation connector
K0 mechanical anti-pumping (standard)

🔹Optional Add-ons (project-specific selection)

Option Code	Description	Typical Application
Y1	Closing‑blocking solenoid	Prevent closing without spring energy; widely required for assembled switchgear
F12	Second opening coil	Dual‑trip path for protection relays
F4	Undervoltage release	Automatic trip upon busbar voltage loss
F3	Over‑current release (CT‑driven)	Tripping directly via current transformer, no protection relay
S41‑S43	Push‑button auxiliary contacts	Status feedback for panel‑mount close/open push‑buttons
X01	Secondary terminal block	Replace aviation connector with hard‑wired terminals
Extra auxiliary contacts	Up to 8 additional contact pairs	Multi‑signal‑loop requirements
Mechanical lock kit	Two‑locks‑one‑key / Three‑locks‑two‑keys	Anti‑mis‑operation & interlocking
Motorized trolley	Motor‑driven trolley in/out	Unattended substations

Sample complete order text:

HVX12-25-06E150, M1-DC220V, F2-DC220V, F11-DC220V, Y1, K0

Comparison: HVX12-25-06E150 vs VS1-12/630-25 (Trolley-type, 150 mm phase spacing)

Item	Schneider HVX12‑25‑06E150	Domestic VS1‑12/630‑25 (Trolley‑150 mm)
Cabinet compatibility	KYN28‑12, 150 mm phase spacing, mechanically interchangeable	KYN28‑12, 150 mm phase spacing, physically interchangeable
Interrupter	Schneider VG embedded pole, APG epoxy resin, integrated pole module	Separate vacuum bottles; large quality variance among manufacturers
Performance class	M2 ≥20 000 operations; E2 electrical endurance; C2 capacitor‑switching rating	M2 for premium brands; M1 only for low‑end makers; C2 rating not always available
Main‑circuit resistance	≤80 μΩ	≤100 μΩ; wide scatter across vendors
Operating mechanism	Modular spring mechanism; coils & motor field‑replaceable, easy disassembly	Monolithic mechanism; higher repair difficulty
Secondary interface	Standard aviation connector; terminal‑block option available	Mostly aviation connector; terminal‑block version custom‑built
Interlock features	Full portfolio: Y1 closing block, undervoltage release, key‑locks, motorized trolley	Basic interlocks included; special functions require retro‑fitting
Maintenance	Modular design; defective components replaceable on‑site, no full‑unit factory return	Mostly complete‑unit repair required
Cost	Premium imported brand, higher price	Cost‑effective; 30‑60 % lower price
Use cases	Critical substations, petro‑chemical, data‑centres, high‑reliability installations	General‑purpose industrial plants, routine distribution retrofits

⚠️Replacement Notes (HVX ↔ VS1)

Primary-circuit phase-to-phase distance 150 mm must match exactly, otherwise contact fingers cannot mate properly.
Pin-out definition of secondary aviation connectors differ: Direct plug-in is invalid; secondary wiring modification is mandatory.
Coil and charging-motor operating voltages shall remain identical.
Trolley chassis dimensions are broadly compatible; dimensional tolerances of some domestic cabinets may require on-site adjustment.

III. Hand-over & Preventive-Test Checklist

Main-circuit resistance test: ≤80 μΩ. Investigate tulip-contact condition and bolt torque if exceeded.
Mechanical-characteristic measurement: opening 30-60 ms; closing 40-70 ms; check bounce, stroke, over-travel.
Vacuum-interrupter power-frequency withstand: 42 kV / 1 min; lightning impulse 75 kV.
Measure coil & motor resistance; verify rated operating voltage.
Interlock validation: test-position / service-position interlock, Y1 closing block, K0 anti-pumping.
Operate trolley in/out; inspect secondary-connector mating and extraction.