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ZCW10-40.5
Fenarro
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This combined electrical apparatus integrates circuit breaker, isolating switch, earthing switch, current transformer, SF6 voltage transformer, surge arrester, and busbars into a grounded steel support structure. By adopting factory-prefabricated modular design, it offers significant advantages such as 30%–50% space saving, reduced construction cost, shortened installation cycle, and high reliability with minimal maintenance.
The ZCW10-40.5 series is widely used in:
Urban and enterprise substations with limited installation space
Mountainous and compact substations
Utility distribution networks for sectionalizing and protection
Capacitor bank switching and tie-breaker applications
Compact design – occupies only 30%–50% of the space of traditional separated equipment.
Factory-prefabricated modules – fully assembled and tested before delivery, reducing onsite installation time.
High reliability – utilizes advanced arc-extinguishing chamber, SF6 voltage transformer, and composite insulator surge arrester.
Flexible arrangement – adaptable to different connection schemes.
Low maintenance – designed for long-term operation with minimal servicing requirements.
| Serial No. | Name | Unit | Data |
|---|---|---|---|
| 1 | Rated Voltage | kV | 40.5 |
| 2 | Rated Frequency | Hz | 50 |
| 3 | Rated Current | A | 1600 |
| 4 | Rated Short-time Withstand Current | kA | 34.5 |
| 5 | Rated Peak Withstand Current | kA | 80 |
| 6 | Rated Short-circuit Duration | s | 4 |
| 7 | Rated Insulation Level (Lightning Impulse Withstand Voltage, Peak) | kV | 185/215 (Across Contacts) |
| 1min Power Frequency Withstand Voltage | kV | 95/118 (Across Contacts) | |
| 8 | Control & Auxiliary Circuit Voltage | V | DC110, DC220; AC220 |
| 9 | Partial Discharge Quantity | pC | ≤20 |
| 10 | Phase-to-phase Width | mm | 1.6 (Standard) |
Additional Parameters
| Item | Data | Item | Data |
|---|---|---|---|
| Rated Short-circuit Breaking Current | 31.5kA | Control Circuit Voltage | DC110/220, AC220 |
| Opening Coefficient | ≤1.5 | SF6 Gas Dew Point | ≤1% |
| Rated Short-circuit Making Current | 80kA | SF6 Gas Moisture Content (20℃) | ≤150 μL/L (handover); ≤300 μL/L (operation) |
| Step-by-step Opening Current | 8kA | Mechanical Life | 6000 times |
| Breaking Operations at Rated Current | 20 times | CT10-A Mechanism Voltage | DC220V, DC110V |
| Operating Sequence | O - 0.3s - CO - 180s - CO | Opening Time | ≤0.06s |
| Closing Time | ≤0.2s | Closing-Opening Time | ≤0.3s |
| Full Opening Time | ≤120ms | CT10-A Motor Power | 600W |
| Main Circuit Resistance | ≤180μΩ / ≤100μΩ | Phase Synchronization Requirement | ≤5mm |
| Busbar Static Bracing Force (Longitudinal) | 400N | Rated Operating Torque | ≤300Nm |
| SF6 Alarm Pressure (20℃) | 0.50MPa | SF6 Lockout Pressure (20℃) | 0.45MPa |
Q1: What is the main advantage of the ZCW10-40.5 combined apparatus compared to traditional equipment?
A1: It integrates multiple components into one compact structure, reducing land use by up to 50% and minimizing installation costs.
Q2: Does the equipment require frequent maintenance?
A2: No, it is designed with high-reliability components such as SF6 arc chambers and composite surge arresters, requiring minimal maintenance.
Q3: Can it be used in areas with harsh environmental conditions?
A3: Yes, it operates reliably in environments with temperatures from -30℃ to +40℃, humidity up to 95%, and seismic conditions up to level 8.
Q4: Where is it most commonly applied?
A4: It is widely used in urban substations, enterprise substations, mountainous areas, and capacitor bank applications.
Q5: What standards does this product comply with?
A5: It meets GB1984-89, GB11032-89, GB1985-89 as well as IEC56, IEC-4, IEC129, IEC694 standards.
