40.5 kV series · Indoor switchgear
Withdrawable, spring-operated breaker for 40.5 kV, 50 Hz indoor switchgear. Match the complete rating, primary contacts, handcart travel and control circuits to the cabinet interface.
Use the listed current / breaking-duty pairs. Other ratings and contact arrangements require the matching schedule and cabinet drawing.
Choose the complete current and breaking-duty pair, then match the handcart contacts, cabinet interface and operating supply.
These five combinations pair the rated current and breaking duty. Confirm a separate rating schedule for other assemblies.
Outline A covers 630–2,500 A; Outline B identifies 3,150 A / 31.5 kA. Match the complete handcart and contact set to the cabinet outline drawing.
The performance schedule above applies to 380 mm phase spacing. Current and breaking-duty lists do not define every available combination. Outline A uses 300 mm phase spacing and 400 mm pole spacing; confirm the matched ratings and cabinet drawing.
Specify the coil supply and DC 220 V charging-motor supply for the selected mechanism. Confirm the operating circuit and terminal schedule with the order.
Check the climate and installation environment against the site specification. Conditions outside this envelope require an agreed equipment specification.
Select the carriage, primary contacts, pole construction and control circuits together. Product views and outline drawings show the withdrawable handcart; request the matching drawing for a fixed assembly.
| Arrangement | Mechanical and primary fit | Control and interlocks |
|---|---|---|
| Withdrawable handcart | Match carriage guides, cabinet width, phase and pole spacing, primary-contact diameter and insertion travel to the selected outline. | Specify operating supplies, auxiliary contacts, connector position and racking / grounding interlocks. |
| Fixed assembly | Specify fixed mounting points, primary connections and operating access on the assembly-specific outline. | Confirm the matching circuit schedule and interlocks before cabinet integration. |
Specify the full model, quantity, current / breaking-duty pair and cabinet interfaces. Agree responsibility for the outline and wiring schedule, then confirm the terminal assignments. Usual selections depend on the ordered assembly.
Compare the sealed-pole handcart arrangements before specifying cabinet interfaces. Confirm the current, breaking duty, contact diameter and clearances on the approved order drawing.
Match these handcart references to the ordered cabinet; request a separate outline for a fixed assembly. The 380 mm phase-spacing ratings and these outlines have different scopes. The 3150 A / 31.5 kA outline is separate from the 3150 A / 40 kA sample report in Documents.
Use the manual and form to specify the complete assembly. The report applies only to its named sample and listed tests.
Available · PDF · 13 pages
Service conditions, electrical and mechanical ratings, handcart dimensions, operation and maintenance. Match the selected pole construction and cabinet arrangement.
Available · DOC · 58 KB
Specify the complete model, cabinet width, phase spacing, handcart travel, contacts, pole construction, control supply and interlocks.
On request · PDF · 24 pages · 2023
Report SL2023/0280-01, dated 30 May 2023, covers eight listed categories for one ZN85-40.5/3150-40 sample: appearance, circuit resistance, auxiliary-circuit insulation, mechanical characteristics, power-frequency withstand, lightning impulse, temperature rise and 2000-operation mechanical endurance. Short-circuit interruption is not among the listed tests. Copies require a company or organization introduction letter.
See Liqiang manufacturing and inspection activities. Model reports and factory inspection records serve different purposes; match the required documents to the proposed equipment.
Configuration · ZN85-40.5/1250-31.5
Price reference for the specified ZN85-40.5/1250-31.5 configuration. Floor-type handcart assembly; cabinet and installation are excluded.
Price range
USD 3750–3800 / set
USD per complete three-phase set. Minimum order: 1 set. USD 3800 per set for 1–9 sets; USD 3750 per set for 10+ sets. Shipping and taxes are excluded. Other configurations and accessories require a separate quotation. Confirm the specification and final quotation before ordering.
The range reflects order-quantity tiers for this configuration; it does not cover every option in the series.
| Quantity (sets) | Price per set |
|---|---|
| 1–9 | USD 3800 |
| 10+ | USD 3750 |
Answers on cabinet fit, coil and motor supplies, and the available test report.
State the complete ZN85-40.5 designation, rated current, short-circuit duty, pole construction and required cabinet interfaces. Confirm that these ratings form an approved combination before ordering; the common model list is not a complete current-duty matrix. See the model and rating schedules.
The displayed photographs and dimensional views are handcart references. For a fixed assembly, confirm mounting points, primary connections, operating access and interlocks against its own approved outline and wiring schedule. See the installation and interface choices.
Confirm each assembly separately. The 630–2500 A outline uses 300 mm phase spacing and 400 mm pole spacing; the 3150 A / 31.5 kA arrangement has its own outline and travel tolerance. Match cabinet width, guides, contacts and clearances to the selected handcart drawing.
Confirm each circuit and the approved wiring schedule. Closing and tripping coils are listed for AC/DC 110 V or 220 V; the charging motor is DC 220 V. Match the actual mechanism, coil voltages, motor supply, auxiliary contacts and connector terminals. See the coil and motor ratings and control options.
Compare the project requirements with both the rated power-frequency withstand voltage and the lightning-impulse withstand voltage in the ZN85-40.5 specifications. Include altitude, ambient conditions and the cabinet insulation design in the selection. These checks complement the continuous-current and short-circuit-duty requirements.
Base the plan on the applicable operating instructions, service conditions, operation history and fault-interruption history. Include inspections of the mechanism, insulation surfaces, primary connections, auxiliary circuits and cabinet interlocks. Have qualified personnel set the inspection and servicing schedule for the installed equipment; consult the product manual when preparing it.
