Decision facts
Start with system ratings
Verify at least 6 system inputs from the single-line diagram: rated voltage, current, short-circuit withstand, form of separation, feeder type, IP class, and maintenance strategy. A catalog family is not a final project specification.
Evidence
Reviewed: 2026-08-01
Confirm the applicable standard
Use IEC 61439-1 and the applicable assembly part as the reference family, then record 3 controls in the technical agreement: edition, destination rules, and model scope.
Evidence
Reviewed: 2026-08-01
Require model-specific evidence
Before award, request 5 evidence sets: type tests, routine-test plan, drawings, protection schedule, and factory acceptance test scope.
Evidence
Reviewed: 2026-08-01
Make the RFQ decision-ready
A usable RFQ states 8 fields: voltage, current, fault level, feeder arrangement, environment, destination standard, component preference, and delivery boundary.
Evidence
Reviewed: 2026-08-01
Comparison matrix
| Choice | Use when |
|---|---|
| GGD fixed distribution | Use for economical fixed distribution where feeder replacement speed and high modularity are not primary requirements. |
| GCS/GCK/MNS or specified SIVACON | Use for modular drawout feeders, motor control, frequent changes, or projects that explicitly require the SIVACON platform. |
Technical specification inputs
| Requirement | Project value |
|---|---|
| Start with system ratings | Verify at least 6 system inputs from the single-line diagram: rated voltage, current, short-circuit withstand, form of separation, feeder type, IP class, and maintenance strategy. A catalog family is not a final project specification. |
| Confirm the applicable standard | Use IEC 61439-1 and the applicable assembly part as the reference family, then record 3 controls in the technical agreement: edition, destination rules, and model scope. |
| Require model-specific evidence | Before award, request 5 evidence sets: type tests, routine-test plan, drawings, protection schedule, and factory acceptance test scope. |
| Make the RFQ decision-ready | A usable RFQ states 8 fields: voltage, current, fault level, feeder arrangement, environment, destination standard, component preference, and delivery boundary. |
Decision path
- 1
Start with system ratings
Verify at least 6 system inputs from the single-line diagram: rated voltage, current, short-circuit withstand, form of separation, feeder type, IP class, and maintenance strategy. A catalog family is not a final project specification.
- 2
Confirm the applicable standard
Use IEC 61439-1 and the applicable assembly part as the reference family, then record 3 controls in the technical agreement: edition, destination rules, and model scope.
- 3
Require model-specific evidence
Before award, request 5 evidence sets: type tests, routine-test plan, drawings, protection schedule, and factory acceptance test scope.
- 4
Make the RFQ decision-ready
A usable RFQ states 8 fields: voltage, current, fault level, feeder arrangement, environment, destination standard, component preference, and delivery boundary.
GGD — fixed and economical
GGD is a fixed low-voltage distribution cabinet widely used for general power distribution. It is simple, robust and low cost, suitable where feeders are stable and drawout flexibility is not required.
Evidence: Hubei Shiji Senyuan Electric Group, International Electrotechnical Commission
GCS / GCK / MNS — drawout modular
These modular drawout systems let individual feeders be isolated and withdrawn for maintenance without stopping the whole panel. They suit process plants and commercial buildings with higher availability needs.
Evidence: Hubei Shiji Senyuan Electric Group, International Electrotechnical Commission
SIVACON 8PT — platform design
SIVACON 8PT is a modular low-voltage switchgear platform with standardized modules, strong form-and-compartment separation and broad component compatibility, often chosen for large or export projects needing documented type testing.
Evidence: Hubei Shiji Senyuan Electric Group, International Electrotechnical Commission
GGD vs GCS/GCK/MNS vs SIVACON 8PT
| Aspect | GGD | GCS/GCK/MNS | SIVACON 8PT |
|---|---|---|---|
| Structure | Fixed | Drawout modular | Modular platform |
| Flexibility | Low | High | High |
| Best fit | General distribution | Process / commercial | Large / export |
Evidence: Hubei Shiji Senyuan Electric Group, International Electrotechnical Commission
RFQ checklist
- 1.Single-line diagram and load schedule
- 2.Rated voltage, current, and short-circuit level
- 3.Indoor/outdoor environment and IP requirement
- 4.Protection, metering, and communication scope
- 5.Destination standard, FAT, packing, and delivery terms
Frequently Asked Questions
What is the first selection input?
Verify at least 6 system inputs from the single-line diagram: rated voltage, current, short-circuit withstand, form of separation, feeder type, IP class, and maintenance strategy. A catalog family is not a final project specification.
Which standard should the buyer specify?
Use IEC 61439-1 and the applicable assembly part as the reference family, then record 3 controls in the technical agreement: edition, destination rules, and model scope.
Is a catalog rating enough for ordering?
No. Verify at least 6 system inputs from the single-line diagram: rated voltage, current, short-circuit withstand, form of separation, feeder type, IP class, and maintenance strategy. A catalog family is not a final project specification.
What evidence should be requested?
Before award, request 5 evidence sets: type tests, routine-test plan, drawings, protection schedule, and factory acceptance test scope.
What belongs in the RFQ?
A usable RFQ states 8 fields: voltage, current, fault level, feeder arrangement, environment, destination standard, component preference, and delivery boundary.
Evidence sources
- SJSY official product catalogHubei Shiji Senyuan Electric Group
- IEC 61439-1:2020, low-voltage switchgear and controlgear assembliesInternational Electrotechnical Commission
Reviewed by Eshan Peng, General Manager(2026-08-01)
Send drawings for an engineering-grade quotation
Share the single-line diagram, ratings, destination, standards, and delivery boundary for a project-specific review.