OLTC integratum et nucleus automatizatus permittunt regulatio automatica tensionis et capacitatem super-oneris de 150% pro sub-transmissione.
On-load tap changer enables automatic voltage adjustment under full load, eliminating downtime for tap changes and stabilizing supply in networks with high renewable penetration or fluctuating industrial loads.
Intelligent shearing and stacking line reduces no-load loss by 5% and noise by 5dB versus manual processes; 7-step 45° full-mitered joints further cut excitation current by ~30%, ensuring stable performance over 30-year lifespan.
Optimized AF cooling system validated for continuous 150% rated load operation with documented hotspot margins per IEC 60076-12, supporting peak demand and emergency backup without insulation degradation.
Funditio autonivelans ad speculum finem praebet fracturas et humorem intrantem prohibet; fortitudo mechanica alta et resistentia ad cortocircuitum excedunt postulata IEC 60076-11 pro nivelibus defectus 33kV/35kV et ambientibus impulsum habentibus.
Classificatio ignis F1/E2/C2 permittit installationem directam in spatiis habitatis vel clausis; designatio sine oleo effusionem olei excludit et OPEX vitae cycli minuit per >60% versus aequivalentia oleo-plena.
Perdita sine onere et sonus secundum IEC 60076-1 in omni unitate mensurantur; experimenta cyclorum OLTC confirmant operationes 10 000+ sine degeneratione contactuum; relationes experimentorum referunt data realia partium lineae automaticae.
Partial discharge <10 pC at 1.5 Um; lightning impulse and induced voltage tests confirm insulation coordination for 33 kV / 35 kV systems; visual inspection documents mirror-finish surface quality.
AN / AF temperature rise tested at rated and 150 % overload; hotspot measurements verify compliance with IEC 60076-12 emergency loading guidelines under OLTC operation.
Units carry CE mark for EU, UL listing for North America, and CCC for China; all tests performed in CNAS-accredited lab with reports traceable to IEC 60076-11, GB/T10228, and GB20052-2024.
| Capacitas aestimata | Tensionis combinatio | Vector group | Amor fatuae (W) | Ammisso oneri | Correntia sine onere (%) | Short Circuit Impedance (%) | ||
| (kVA) | ||||||||
| Alta voltage （kV) | Intervalum derivativum | Infimum Voltum (kV) | ||||||
| 800 | 33- 38.5 |
±5% ±2×2.5% |
3.5 6 6.3 10 10.5 11 |
Dyn11 Yd11 Yd11 Yyn11 |
2200 | 9400 | 1.1 | 6 |
| 1000 | 2610 | 10800 | 1.1 | |||||
| 1250 | 3060 | 11900 | 1 | |||||
| 1500 | 3600 | 15400 | 1 | |||||
| 2000 | 4130 | 18200 | 0.9 | 7 | ||||
| 2500 | 4750 | 21800 | 0.9 | |||||
| 3150 | 5880 | 24500 | 0.8 | 8 | ||||
| 4000 | 6860 | 29400 | 0.8 | |||||
| 5000 | 8180 | 34960 | 0.7 | |||||
| 6300 | 9680 | 40800 | 0.7 | |||||
| 8000 | Dyn11 Yd11 YNn11 |
11000 | 46060 | 0.6 | 9 | |||
| 10000 | 6 6.3 10.5 11 |
12660 | 56500 | 0.6 | ||||
| 12500 | 15400 | 64600 | 0.5 | |||||
| 16000 | 18900 | 76000 | 0.5 | |||||
| 20000 | 22400 | 85500 | 0.4 | 10 | ||||
Standard ±8×1.25% or custom tap ranges/step voltages to match local 33kV/35kV grid codes; optional motor drive brands and remote control interfaces for SCADA integration.
Oxygen-free copper for maximum short-circuit withstand and OLTC cycling endurance, or EC-grade aluminum with proprietary brass-rod joints for cost optimization; both validated for mirror-finish casting adhesion.
Natural air convection (AN) for base load; forced-air fans (AF) with thermostatic control for 150% overload; optional redundant fan sets and alarm contacts for N+1 redundancy in critical voltage-regulation nodes.
Nudus coilus pro mundis interioribus switchgear-locis; ventilata ferro-steel inclysa (IP20) pro communi interiori usu; intempestiva stainless-steel inclysa (IP23D) cum anticondensationis calefactoribus pro exteriori vel tecto deploymente.
PT100-sensoribus incorporatis in LV-coilis, in core-clampis, et in OLTC-mechanismis, cum Modbus/IEC 61850-egressibus; indicatores positionis OLTC, monitoria usurae contactuum, et thermostatorum marcarum tertiarum facultativa.
Custom dimensions to fit existing 33kV/35kV switchgear footprints; RAL color matching; bilingual nameplates with QR codes linking to digital manuals, OLTC maintenance guides, and test certificates.
No-load and load losses optimized to exceed GB20052-2024 Tier 1 or client-specific targets; custom loss guarantees backed by actual automated-line core batch test data.
Narra nobis requisita tui projecti—gradus tensionis, ambientis, codicis rete, aut temporis expeditionis—et nos solutionem praebemus quae conformis est et optima.
EN