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Project: smart distribution equipment R&D centre Drawing no.: CLC-RD-2026-0918 Scale 1:20 Version rev.2.4.1 Reviewed by: Qiqige ● Controlled drawing · internal circulation only
Chilechuan Power Equipment Research InstitutePower Equipment R&D Institute
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DWG · Power Equipment Research Institute / smart ring main unit section

Every switching operation
becomes reproducible engineering

Focused on 12–40.5 kV distribution equipment and power electronics for energy storage. Topology design, thermal simulation and type testing are all in-house; every unit passes 50 kA short-circuit withstand and a 2,000-hour salt spray test before shipment.

R&D staff386 staff · 42 with doctorates
Annual R&D spendingCNY 480 m · 6.2% of revenue
Projects in development57 standards · 6 national
Fig. 1Smart ring main unit · front section · 1:20
1200 mm 2400 mm 12 34 Main busbarVacuum circuit breaker Electronic instrument transformer Cable compartment
1Main busbar · epoxy cast / temperature rise ≤ 55 K
2Vacuum circuit breaker · 30,000 mechanical operations
3Electronic instrument transformer · class 0.2S
4Cable compartment · three-position isolation + earthing
4.26GWRenewable capacity+12.4% YoY
18,600racksCompute racks in service+8.1% YoY
1.12Data centre PUE-0.03 YoY
620,000tDairy annual capacity+5.6% YoY
01

R&D process

From requirements to volume production · full traceability

6 stages / 106-day standard cycle

01

Requirements definition

Customer site survey · technical agreement review

8 days
02

Concept design

Topology selection · 3D layout · thermal simulation

14 days
03

Prototype build

Pilot-line prototypes · assembly process validation

21 days
04

Type tests

Thermal cycling · salt spray · EMC · short-circuit withstand

18 days
05

Small-batch validation

Field installation · data reporting back

45 days
06

Volume production ramp-up

Process freeze · supply chain sourcing · volume production

—
02

Product matrix

5 series / 38 models in volume production

Data syncs to the OA product master data

ModelProduct nameRated parametersEfficiency / accuracyIngress protectionCertification
CLC-RM-12 Smart ring main unit 12 kV 98.6% IP67 KEMA / CQC
CLC-DT-2000 Dry-type transformer 2000 kVA 99.1% IP54 National Transformer Quality Testing Centre
CLC-PCS-630 Storage converter 630 kW 98.9% IP65 CGC / TÜV
CLC-SW-40 Integrated primary-secondary circuit breaker 40.5 kV — IP67 Type tests at the electric power research institute
CLC-ED-480 Liquid-cooled ultra-fast charger 480 kW 96.2% IP55 CE / GB
03

Test centre capabilities

CNAS-accredited laboratory · reports recognised worldwide

4 categories, 27 tests

Thermal cycling
-70℃ ~ +180℃

3 climatic chambers · 15 °C/min ramp

Salt-spray corrosion
NSS / CASS 2000h

2,000 h neutral salt spray with no base-metal corrosion

EMC
Full EMC suite

3 m anechoic chamber · emissions and immunity

Short-circuit withstand
50 kA / 4 s

High-current test station · full dynamic and thermal stability

Patents and standards IP / STANDARD

ZL 2024 1 0386Interlock mechanism for a three-position isolating earthing switch
ZL 2024 2 1174Digital-twin method for predicting ring main unit temperature rise
ZL 2023 1 0942Current-sharing control method for liquid-cooled charger power modules
ZL 2023 2 0651Adaptive virtual synchronous control circuit for a storage converter
PCT/CN2025/0Online insulation-defect detector for epoxy-cast busbars (international application)
Granted invention patents 86 utility models 214 standards led / participated in 31 items

Standards led or co-authored STANDARDS

GB/T 39063.6 kV–40.5 kV AC metal-enclosed switchgear
GB/T 1094Power transformers — Part 11: Dry-type transformers
DL/T 860Communication networks and systems for substations (IEC 61850)
NB/T 33015Technical specification for electrochemical storage system converters
GB/T 18487Conductive charging system for electric vehicles
04

R&D and test base

AMap Open Platform · GCJ-02 · redundant with Baidu Maps

6 nodes

Group HQ · Hohhot40.8414°N / 111.7519°EHQ / control hub
Ulanqab Wind Base40.9946°N / 113.1328°E2.31 GW
Ordos Solar Base39.6084°N / 109.7813°E1.95 GW
Qingcheng AI Computing Centre40.8122°N / 111.6705°E18,600 racks / PUE 1.12
Xilin Gol Grassland Farm43.9333°N / 116.0864°E620,000 t/yr raw milk
Hulunbuir Tourism Camp49.2120°N / 119.7400°E8 routes
05

Institute news

Language versions 6

4 items

Where there are conditions, there is a solution
Send us a technical agreement

After you submit your requirements the system creates a lead and pushes it to the group OA; the institute customer engineering team responds within 2 hours with a preliminary selection and simulation report.

ODM / OEMJoint R&DPrototype buildCommissioned type tests