Product Overview
JLSZV-6/10W is an outdoor dry-type combined transformer with stainless steel floor-mounted installation for 6kV and 10kV medium-voltage distribution systems. It integrates current transformer (CT) and voltage transformer (PT/VT) functions in a single stainless steel enclosure, providing reliable current and voltage signals for high-voltage energy metering in demanding outdoor environments.
This product is suitable for 6kV and 10kV three-phase AC distribution networks. It is commonly used in substations, industrial facilities, and distribution points requiring robust floor-mounted installation with enhanced corrosion resistance. The stainless steel enclosure provides superior protection against weather, dust, and mechanical damage while maintaining excellent heat dissipation.
Product Display
[Product images to be added]
Application Position
JLSZV-6/10W is installed at ground level in substations, industrial yards, or distribution points. The stainless steel floor-mounted design provides enhanced durability and corrosion resistance for long-term outdoor operation. The primary terminals connect to the three-phase medium-voltage circuit, while the secondary terminal box supplies voltage and current signals to active energy meters, reactive energy meters, and monitoring instruments.
Main Applications
- 6kV and 10kV outdoor distribution networks requiring floor-mounted metering
- Substations with stainless steel enclosure requirements for corrosion resistance
- Industrial facilities and coastal areas requiring enhanced corrosion protection
- Active and reactive energy measurement for utility revenue billing
- Applications requiring wide current range from 7.5A to 600A
- Projects requiring State Grid standard compliance (GB17201-2006)
- Distribution points requiring integrated CT and PT functions in one floor-mounted unit
Application Case Studies
Application Scenario 1: Substation Yard Metering
Utilities deploy floor-mounted combined transformers in substation yards for revenue billing and load monitoring. The stainless steel enclosure provides superior corrosion resistance in outdoor environments, ensuring long-term reliability without maintenance concerns. The floor-mounted design eliminates the need for elevated platforms, simplifying installation and maintenance procedures.
Application Scenario 2: Coastal Industrial Facility
Industrial facilities in coastal areas require metering equipment with enhanced corrosion protection. The stainless steel enclosure resists salt spray and humid conditions that would degrade standard enclosures. The wide current range from 7.5A to 600A accommodates various load conditions without requiring multiple metering units.
Application Fit
Suitable For
- Outdoor 6kV and 10kV metering points requiring floor-mounted installation
- Substations and industrial facilities with corrosion resistance requirements
- Coastal areas and harsh environmental conditions
- Applications requiring stainless steel enclosure for enhanced durability
- Projects requiring wide current range from 7.5A to 600A
- Applications requiring State Grid standard compliance (GB17201-2006)
- Distribution points requiring integrated CT and PT functions in one unit
Not Recommended For
- Pole-mounted or elevated installation applications
- Indoor-only compact switchgear applications
- Applications requiring separate CT and PT bodies instead of integrated design
- Protection-only CT applications where metering accuracy is not required
- Applications with space constraints requiring smaller footprint equipment
Installation Conditions
- Installation position: Ground-level installation in substations, industrial yards, or distribution points
- Ambient temperature: -15°C to +55°C
- Maximum altitude: ≤ 4500m (no derating required)
- Enclosure material: Stainless steel for enhanced corrosion resistance
- Grounding: Connect grounding terminal per local electrical codes and metering standards
- Maintenance: Stainless steel enclosure requires minimal maintenance in outdoor environments
Technical Parameters
The JLSZV-6/10W is an outdoor dry-type combined transformer with stainless steel floor-mounted installation for 6kV and 10kV systems. Operating temperature -15°C to +55°C, altitude up to 4500m, compliant with GB17201-2006. Features stainless steel enclosure for enhanced corrosion resistance and wide current range from 7.5A to 600A.
Voltage Transformer Data
| Model | Rated Voltage Ratio |
Accuracy Class / Rated Output |
Limit Output |
Rated Insulation Level (kV) |
|---|---|---|---|---|
| JLSZV-6W | 6000/100 | 0.2 (2×20VA), 0.5 (2×50VA), 1.0 (2×80VA), 3.0 (2×200VA) | 2×400 VA | 7.2/32/60 |
| JLSZV-10W | 10000/100 | 0.2 (2×20VA), 0.5 (2×50VA), 1.0 (2×80VA), 3.0 (2×200VA) | 2×400 VA | 12/42/75 |
Current Transformer Data
| Rated Primary Current (A) |
Accuracy Class / Rated Output |
1s Thermal Current (kA) |
Rated Dynamic Current (kA) |
|---|---|---|---|
| 7.5 – 15 | 0.2S (10VA), 0.5S (10VA), 0.5 (15VA) | 1.0 | 2.5 |
| 20 – 50 | 0.2S (10VA), 0.5S (10VA), 0.5 (15VA) | 2.5 | 6.3 |
| 75 – 100 | 0.2S (10VA), 0.5S (10VA), 0.5 (15VA) | 6.3 | 16 |
| 150 – 200 | 0.2S (10VA), 0.5S (10VA), 0.5 (15VA) | 16 | 40 |
| 300 – 400 | 0.2S (10VA), 0.5S (10VA), 0.5 (15VA) | 40 | 100 |
| 500 – 600 | 0.2S (10VA), 0.5S (10VA), 0.5 (15VA) | 60 | 150 |
Installation & Dimensions
Dimension Reference
| View | Key Dimensions |
Application Note |
|---|---|---|
| Front View | Width 1100mm; Height 1100mm | Double-door design with ventilation louvers |
| Side View | Width 1100mm; Body height 1000mm | Stainless steel enclosure with mounting base |
| Internal View | Shows interior layout after opening doors | CT and PT units visible inside enclosure |
Wiring Diagram
[Wiring diagram to be added]
Installation Guidelines
- Confirm AP1/AP2, BP1/BP2 and CP1/CP2 terminal sequence before commissioning
- CT secondary circuits must not be open-circuited during operation
- PT secondary terminals provide voltage input to meters and monitoring devices
- CT secondary terminals provide current input to active and reactive energy meters
- Grounding and meter box wiring should follow the approved project wiring diagram
- Stainless steel enclosure must be properly grounded for safety
Standards Compliance
Compliant with GB17201-2006 for combined transformer metering boxes. For international projects, compliance should be aligned with applicable IEC instrument transformer standards and local utility metering rules.
Selection Guide
Select by system voltage: Use JLSZV-6W for 6kV systems (7.2kV class) and JLSZV-10W for 10kV systems (12kV class).
Select by current ratio: Determine CT primary current according to actual load current. Supports 7.5A to 600A primary current range in multiple segments.
Select by metering accuracy: Use 0.2S CT accuracy for higher-accuracy energy metering. Use 0.5S or 0.5 according to metering specification.
Select by voltage ratio: Choose 6000/100 or 10000/100 according to network voltage and meter input requirement.
Ordering Information
When ordering, please specify:
- Model: JLSZV-6W or JLSZV-10W
- System voltage: 6kV or 10kV
- PT ratio: 6000/100 or 10000/100
- CT primary current: 7.5A to 600A (specify exact value)
- CT secondary current: 5A
- CT accuracy class: 0.2S, 0.5S, or 0.5
- PT accuracy class: 0.2, 0.5, 1.0, or 3.0
- Quantity