Overhead High-Voltage Prepayment Equipment
Product Description
The overhead high-voltage prepayment equipment includes two models, ZW32-11 and ZW32-33. A complete set consists of the primary ZW32 switch and the secondary metering control box. This equipment has been widely used domestically and internationally for high-side metering and control of large users, enabling direct metering from the high-voltage side and eliminating the risk of electricity theft on the low-voltage side.
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Product Advantages
The technically mature ZW32 switch is used as the primary equipment, and the FTU integrated three-phase meter is used as the secondary equipment.
The primary equipment features multi-ratio adjustable current, flexibly adapting to different application scenarios.
High-voltage metering with integrated protection functions ensures enhanced safety and reliability.
High-precision voltage and current sensors provide more accurate metering.
The enclosure is made of 304 stainless steel with a thickness greater than 3mm, and the bushings are made of silicone rubber, offering corrosion resistance and long service life.
Line operation data can be transmitted remotely to the backend system, facilitating batch management.
Overhead High-Voltage Prepayment Equipment
ZW32-11 | ZW32-33 | HXD837-F30
Product Parameters – Primary Section, ZW32 Switch
| Parameter Name | ZW32-33 | ZW32-11 |
| Rated Voltage | 33 kV | 11 kV |
| Rated Current | 630 A | 630 A |
| Rated Short-Duration Power-Frequency Withstand Voltage, 1 min, Dry | 70 kV | 50 kV |
| Rated Short-Duration Power-Frequency Withstand Voltage, 10 s, Wet | 70 kV | 50 kV |
| Rated Lightning Impulse Withstand Voltage (Peak) | 170 kV | 110 kV |
| Partial Discharge Measurement | <20 pC | <20 pC |
| Rated Short-Circuit Breaking Current | 16 kA | 16 kA |
| Rated Peak Withstand Current | 41.6 kA | 40 kA |
| Rated Short-Time Withstand Current, 3 s | 16 kA | 16 kA |
| Rated Frequency | 50/60 Hz | 50/60 Hz |
| Cable Charging Current | 40 A | 25 A |
| Line Charging Current | 10 A | 10 A |
| IP Rating | IP65 | IP65 |
| Mechanical Life | 10,000 cycles | 10,000 cycles |
| Pollution Level | Class 4 | Class 4 |
| Main Circuit Resistance | ≤ 60 μΩ | ≤ 60 μΩ |
| Enclosure Material | 304 Stainless Steel | 304 Stainless Steel |
Product Parameters – Secondary Section, Metering Control Box
| Parameter Name | Value |
| Supply Voltage | 90-265 VAC |
| Frequency | 50/60 Hz |
| Average Power Consumption | <80 VA |
| Rated Voltage | 110 V |
| Voltage Accuracy | 0.50% |
| Number of Voltage Sensors | 3 |
| Rated Current | 1 A/5 A |
| Current Accuracy | 0.50% |
| Number of Current Sensors | 3 |
| Communication Interfaces | Serial Port, USB, Ethernet Port |
| Communication Protocols | Modbus, IEC 60870-5-101, IEC 60870-5-104 |
| Protection Functions | 79 Auto-Reclosing; 50/51 Phase Overcurrent Protection; 50Q/51Q Negative-Sequence Overcurrent Protection; 27 Undervoltage Protection; 59/59N Overvoltage Protection; 81U/81O Under/Over Frequency Protection |
| Enclosure Material | 304 Stainless Steel, Thickness ≥3 mm |