Ref: XH-SUB-2026-0485
XINHUAN
Submittal Package
Anhui XinHuan Electrical Power Equipment Co., Ltd. | Hefei Manufacturing Base
CNAS Test Certified | ISO 9001:2015 | ISO 14001:2015 Registered OEM
SUBMITTAL REF: XH-SUB-2026-0485
Date: 2026-10-30
Standard: IEC 60076 / GB/T 1094 / ANSI C57
Isolation Transformers
BK Industrial Machine Tool Control Transformer (25 VA – 5000 VA)
Submittal Specification Datasheet & Engineering Technical Parameters
1. Electrical Technical Parameters & Ratings
| Parameter Specification | Design Rating & Certified Value |
|---|---|
| Rated Capacity | 25VA, 50VA, 100VA, 150VA, 250VA, 500VA, 1000VA, 2000VA, 5000VA |
| Primary Voltage | 380V, 220V AC (Multi-tap input) |
| Secondary Voltage | 36V, 24V, 12V, 6V AC |
| Frequency | 50 Hz / 60 Hz |
| Installation | DIN Rail or Base Plate Screw Mount |
| Model BK-25~50VA | A: 56±0.5 mm, C: 53±2 mm, Bmax: 80 mm, Dmax: 74 mm, Emax: 85 mm, K×J: 4.8×9 mm |
| Model BK-100VA | A: 64±0.5 mm, C: 65±2 mm, Bmax: 86 mm, Dmax: 84 mm, Emax: 92 mm, K×J: 4.8×9 mm |
| Model BK-150VA | A: 84±0.5 mm, C: 80±2 mm, Bmax: 96 mm, Dmax: 97 mm, Emax: 110 mm, K×J: 5.8×11 mm |
| Model BK-200VA | A: 84±0.5 mm, C: 87±2 mm, Bmax: 96 mm, Dmax: 105 mm, Emax: 110 mm, K×J: 5.8×11 mm |
| Model BK-250VA | A: 84±0.5 mm, C: 90±2 mm, Bmax: 96 mm, Dmax: 110 mm, Emax: 110 mm, K×J: 5.8×11 mm |
| Model BK-300VA | A: 90±0.5 mm, C: 98±2 mm, Bmax: 120 mm, Dmax: 120 mm, Emax: 125 mm, K×J: 7×13 mm |
| Model BK-400~500VA | A: 90±0.5 mm, C: 104±2 mm, Bmax: 135 mm, Dmax: 128 mm, Emax: 125 mm, K×J: 7×13 mm |
| Model BK-700VA | A: 110±0.5 mm, C: 97±2 mm, Bmax: 152 mm, Dmax: 125 mm, Emax: 147 mm, K×J: 7×13 mm |
| Model BK-1000VA | A: 111±0.5 mm, C: 113±2 mm, Bmax: 170 mm, Dmax: 148 mm, Emax: 165 mm, K×J: 7×13 mm |
Transient Simulation & Saturation Characteristics (PSCAD / ETAP / EMTP)
IEEE C57.12.00 / IEC 60076-1| Electromagnetic Parameter | Design Characteristic & Certified Benchmark | Grid Study Application |
|---|---|---|
| Saturation Knee-Point Voltage (\(V_k\)) | 1.15 ~ 1.22 p.u. of \(V_n\) (CRGO Laser Core) | Overvoltage & Ferroresonance Protection |
| Air-Core Reactance (\(X_{\text{air}}\)) | \(2.0 \sim 2.5 \times X_{sc}\) (Standard: \(2.1 \times X_{sc}\)) | Deep Saturation Inrush Peak Limit |
| Air-Core Inductance (\(L_{\text{air}}\)) | \(L_{\text{air}} = X_{\text{air}} / (2\pi f)\) (Winding Specific) | PSCAD Saturable Core / UMEC Modeling |
| Inrush Current Ratio (\(I_{\text{inrush}} / I_n\)) | 8.0 ~ 12.0 × Rated \(I_n\) (Decay \(\tau \approx 0.15\text{s} \sim 0.35\text{s}\)) | Protective Relay Coordination & POI Voltage Dip |
| Magnetizing Inrush Decay Constant (\(\tau\)) | \(\tau = L_{\text{air}} / R_w\) (Typically 100 ms – 350 ms) | Differential Relay (87T) Harmonic Restraint |
Need project-specific \(V\text{-}I\) curve or PSCAD `.csv` dataset for renewable grid interconnection?
Interactive V-I Calculator
2. 2D AutoCAD General Arrangement (GA) Drawing & Dimensional Profile
Figure 2.1 — 2D AutoCAD Dimensional Submittal Schematic
Dimensional & Installation Requirements
- Foundational Base: Steel channel Skid / Sub-station Pad Mounting.
- Bushings Orientation: HV top-mounted / side-cabinet entry option.
- Grounding Terminals: Dual M12 copper grounding pads on diagonal corners.
- Enclosure Protection: IP54 Outdoor Corrosive C4/C5 Marine Paint Coating.
- CAD Drawing File: Request `.DXF` or `.DWG` blocks from sales engineering.
3. Factory Acceptance Testing (FAT) & Routine Test Protocol
Every transformer manufactured by XinHuan undergoes 100% routine inspection in accordance with IEC 60076-1 before dispatch. Routine test certificates are included in the shipment package.
1. Winding Resistance Measurement (HV & LV)
2. Voltage Ratio & Vector Group Phase Displacement
3. Short-Circuit Impedance & Load Loss Test
4. No-Load Loss ($P_o$) & Excitation Current Test
5. Separate-Source AC Dielectric Withstand Test
6. Induced Overvoltage Withstand Test (DVWV)
7. Insulation Resistance & Polarization Index (Megger)
8. Hermetic Tank Pressure Leakage & Oil BDV Test
9. Extended Excitation Characteristic & Knee-Point Verification (to 120% \(V_n\))
10. Frequency Response Analysis (FRA) & Air-Core Reactance Test (Optional)
4. Seaport Logistics, Packaging & Warranty Terms
Export Packaging
IPPC fumigated solid wooden crate skid with vacuum moisture foil barrier.
Primary Delivery Ports
CIF Chancay, Callao, Apapa, Mombasa, Manila, Jakarta, Santos, & Valparaiso.
Factory Warranty
36 Months Full Replacement / Factory Engineering Warranty against defects.
Anhui XinHuan Electrical Power Equipment Co., Ltd.
Factory Address: Industrial Park, Hefei City, Anhui Province, China | Export Dept: [email protected]
Submittal Document Code: XH-SUB-2026-0485 — Confidential Technical Datasheet