High-Voltage Components
Bridge Rectifiers, Diode Discs & Strips Manufactured in Nashik
Ameet Electro Systems (AES) manufactures high-voltage diode and rectifier components for the power, industrial, and medical equipment sectors. Our HV product range covers bridge rectifiers rated at 70 kV and 95 kV, avalanche-grade diode discs rated at 20 kV, diode strips rated from 100 kV to 200 kV, HV resistor boards, and overvoltage protection components.
Every component is designed, assembled, and tested in-house at our facility in Satpur MIDC, Nashik. Bridge rectifiers are vibration-tested by ETDC (Electronics Testing and Development Centre) before dispatch. We supply domestically across India and export internationally, shipped FOB Nhava Sheva (JNPT), Navi Mumbai.
What "Custom-Built" Means at AES
Most training equipment manufacturers in India produce from a fixed catalogue. You select a product code, they ship from stock. The assumption is that a standard automotive trainer covers enough ground for most learners — and for generic ITI or polytechnic instruction, that assumption holds.
OEM dealer networks and OEM-commissioned training institutes are a different buyer. They need:
- Components that match the actual part numbers used in the service manual
- Fault-simulation points that replicate real diagnostic scenarios technicians will encounter in the field
- Power supply specifications matched to the deployment geography (India 230VAC / global 90–270VAC)
- Fixture formats that fit the training bay layout and can withstand daily use across a multi-year programme
At AES, we design to the brief. We review your vehicle model documentation, agree a component list with your training team, prototype a first unit, and adjust before series production. The result is a kit that technicians recognise immediately because it reflects the system they are trained to maintain — not a generic approximation of it.
We have built training kits and boards for:
- A leading global commercial vehicle manufacturer's dealer service network (sensor demo board + telematics architecture rig)
- A leading Indian tractor OEM's authorised service centre chain (hydraulic fault diagnosis board)
- A leading Japanese automotive brand's dealer network in Australia (learning kits — accessories)
- A leading Indian premium motorcycle manufacturer's training programme
- A leading global automotive OEM's dealer technician programme
Applications — Four Buyer Segments We Serve
Our HV components are specified and supplied into four distinct application areas.
Transformer Manufacturing and Testing
Transformer manufacturers and HV test laboratories use our bridge rectifiers and diode assemblies in induced-voltage test rigs, no-load loss test benches, and transformer oil breakdown voltage (BDV) test sets. These applications require bridge rectifiers capable of sustained DC output at high voltage with low leakage current and predictable avalanche behaviour under surge conditions.
Relevant standards: IEC 60076 (power transformers), IS 2026 (Indian equivalent).
Our bridge rectifiers (1BR70P, 1BR95P and disc-type equivalents) are designed to complement the rectifier stages of these test systems. They are assembled with copper bus bars and M8 bolt terminals to allow integration into existing transformer test bench wiring without adaptation.
Electrostatic Precipitators (ESP)
Transformer manufacturers and HV test laboratories use our bridge rectifiers and diode assemblies in induced-voltage test rigs, no-load loss test benches, and transformer oil breakdown voltage (BDV) test sets. These applications require bridge rectifiers capable of sustained DC output at high voltage with low leakage current and predictable avalanche behaviour under surge conditions.
Relevant standards: IEC 60076 (power transformers), IS 2026 (Indian equivalent).
Our bridge rectifiers (1BR70P, 1BR95P and disc-type equivalents) are designed to complement the rectifier stages of these test systems. They are assembled with copper bus bars and M8 bolt terminals to allow integration into existing transformer test bench wiring without adaptation.
X-Ray and Medical Equipment
Diagnostic X-ray generators and industrial non-destructive testing (NDT) equipment use HV power supplies in the 40–150 kV range. The diode components in these supplies must have ultra-low leakage current and fast recovery behaviour to maintain waveform integrity at the operating frequency.
Our RA/RAE series HV diode strips (100–200 kV, 40–500 mA, standard and ultra-fast recovery) are the primary components we supply into this application. The ARE20A diode disc is also used in X-ray power supplies where a disc-stack bridge assembly is preferred.
High-Voltage Test Equipment
HV test sets, insulation testers, and partial discharge detectors all require HV rectifier and diode components as part of their DC generation circuits. Our bridge rectifiers and diode discs are specified into these instruments by test-equipment OEMs and in-house test bench builders.
Disc-Type vs PCB-Type Bridge Rectifiers — Which to Specify
The most common selection question we receive is when to specify a disc-type bridge rectifier versus a PCB-type bridge rectifier. Both convert AC to high-voltage DC, but the choice affects insulation clearance, thermal management, and physical form factor.
Disc-Type Bridge Rectifiers
Disc-type rectifiers are built by stacking individual epoxy-moulded HV diode discs in a series string, clamped to a copper bus bar. Each disc provides approximately 20–25 kV of reverse blocking voltage; stacking multiple discs achieves the full rated output.
When to specify disc-type:
- Applications at 70 kV and above, where physical separation between diode elements provides the superior insulation clearance required by IEC 60664
- Oil-immersed environments (disc assemblies are rated for continuous operation in transformer oil)
- Applications requiring field serviceability — individual discs can be replaced without replacing the full assembly
- Transformer testing rigs, ESP TR units, and high-power HV power supplies
AES manufactures disc-type bridge rectifiers at 70 kV and 95 kV ratings.
PCB-Type Bridge Rectifiers
PCB-type rectifiers mount the diode string on a glass-fibre high-voltage insulating PCB substrate, with copper bus bars for terminal connection. The board provides mechanical structure and consistent dielectric spacing between diode elements.
When to specify PCB-type:
- Applications where a fixed form factor and consistent production geometry are required
- Environments where the assembly will be operated in air rather than oil (PCB insulation provides the primary dielectric)
- Situations where compact overall dimensions matter more than field replaceability
- Integration into enclosed HV power supply modules
AES manufactures PCB-type bridge rectifiers at 70 kV (1BR70P) and 95 kV (1BR95P). Both are ETDC vibration-tested.
If you are unsure which configuration suits your application, contact us with your voltage, current, operating medium (oil or air), and space envelope. We will advise without obligation.
Product Range
1 — Bridge Rectifiers (PCB Type)
1BR70P — 70 kV PCB-Type Bridge Rectifier
Construction: 2× PCB-sheet assembly with copper bus bars (30×6 mm and 25×8 mm) and tin-plated M8 nut-bolt fixings.
1BR95P — 95 kV PCB-Type Bridge Rectifier
Construction: 2× PCB-sheet assembly with copper bus bars and tin-plated brass M8 nut-bolt fixings.
2 — Bridge Rectifiers (Disc Type)
70 kV Disc-Type Bridge Rectifier
95 kV Disc-Type Bridge Rectifier
3 — HV Diode Disc (ARE20A)
The ARE20A is an avalanche-grade HV diode disc rated at 20 kV continuous reverse voltage. It is the individual building block used in stacked disc-type bridge rectifier assemblies, and is available separately for replacement and for custom assembly builds.The ARE20A is an avalanche-grade HV diode disc rated at 20 kV continuous reverse voltage. It is the individual building block used in stacked disc-type bridge rectifier assemblies, and is available separately for replacement and for custom assembly builds.
Mounting: screw connection (M8); discs are stacked in series to achieve required total reverse voltage rating for the assembly.
4 — HV Diode Strips (RA / RAE Series)
The RA and RAE series are PCB-mounted HV diode strips for single-polarity rectification in HV power supplies. The RA series is available in open (PCB-only) construction; the RAE series is epoxy-encapsulated for additional environmental protection. Both series cover 100–200 kV and are available in standard and ultra-fast recovery variants.
Part number format: RA[voltage in kV][current/recovery code] — e.g. RA100S2 = 100 kV / 200 mA / Standard / Regular PCB.
Dimensions (all variants): Length 150 mm; width and height vary by current rating (S2/U2: 26×10 mm regular, 28×11 mm encapsulated; S5/U5: 38×13 mm regular, 40×14 mm encapsulated). Mounting hole: 4 mm diameter.
Features: Glass-epoxy PCB construction; avalanche characteristics; low leakage current; suitable for operation in oil; ultra-fast recovery variants for high-frequency applications.
Primary application: X-ray power supplies. Also used in ESP power supply units.
5 — HV Resistor Board Assembly (78 MΩ)
The 78 MΩ HV resistor board assembly is a precision resistor network built on a PCB with anti-tracking varnish and avalanche protection diodes. It is designed exclusively for use in electrostatic precipitator (ESP) power supply units, where it functions as a voltage-divider and protection network within the HV circuit.
6 — Single Pair Protector / Overvoltage Protector (GDT)
The Single Pair Protector is a plug-and-use overvoltage protection component based on gas discharge tube (GDT) technology. It protects single-pair communication and signal circuits from high-voltage transients.
Standards and Quality
All AES HV components are designed within insulation coordination requirements defined under IEC 60664 (insulation coordination for equipment within low-voltage systems) and application-specific standards for the sectors we serve. Transformer test equipment components are designed to complement testing per IEC 60076 (power transformers) and IS 2026 (Indian standard equivalent).
ETDC Vibration Testing: Our 70 kV PCB-type bridge rectifier (1BR70P) and 95 kV PCB-type bridge rectifier (1BR95P) carry vibration testing certification from ETDC (Electronics Testing and Development Centre), an accredited Government of India testing laboratory. Certificates are available on request.
In-house testing: All bridge rectifier assemblies are tested at full rated voltage before dispatch. Diode discs and strips are tested to datasheet specification before packaging.
MSME / Registration: Ameet Electro Systems is MSME UDYAM registered. GSTIN: 27AHZPP6922A1ZY.
Custom Specifications
Our standard product range covers the most common HV rectifier and diode configurations used in transformer testing, ESP, and X-ray applications. For requirements outside the standard range — non-standard voltage ratings, unusual terminal configurations, oil-immersed housing integration, or combined resistor-rectifier assemblies — we design to the buyer's brief.
To enquire about a custom specification, provide:
- Required DC output voltage and current
- Operating medium (oil / air)
- Physical envelope constraints (maximum dimensions)
- Application and operating standard (IEC / IS / other)
- Quantity and required delivery timeline
We will respond with a feasibility assessment within one working day.
Export
We supply HV components internationally. Export shipments are packed for sea freight and despatched FOB Nhava Sheva (Jawaharlal Nehru Port, Navi Mumbai). We provide commercial invoice, packing list, and Certificate of Origin (India).
Standard lead time: 2–4 weeks from confirmed order.
Datasheets: Available on request for all HV product lines. Provide your email or use the contact form below.
Who We Supply
We supply HV bridge rectifiers, diode discs, and diode strips to:
- Transformer manufacturers building induced-voltage and no-load loss test rigs
- ESP power supply unit manufacturers serving the thermal power, cement, and steel sectors
- X-ray equipment OEMs building diagnostic and industrial NDT generators
- HV test equipment manufacturers building insulation testers and partial discharge detectors
- In-house test bench engineering teams at power utilities and industrial facilities
We have supplied components to a major Indian public sector power equipment manufacturer and to international buyers in Europe and Asia. Specific client names are not published without per-client permission; references are available under NDA.
Frequently Asked Questions
What is the difference between a training kit and a training board?
A training kit teaches the general principles of automotive components on a generic fixture. A training board reproduces one specific vehicle system — the real sensors, relays, and circuit topology of a named model — so a technician trains on the exact hardware they will service. AES manufactures both; boards are covered on this page, kits in our [training kits guide](/training-kits).
Can AES build a training board for a specific vehicle model we manufacture?
Yes — this is our core offering. Share the vehicle model, the system to train (sensors, telematics, hydraulics, electrical), and your learner profile. We map components to your service documentation and design a board accordingly.
What is the minimum order quantity?
There is no stated minimum. We have supplied single-unit prototypes for evaluation and series orders for network-wide rollouts. Contact us with your volume and we will advise on lead time and cost.
Do the boards come with manuals?
Yes. Each board ships with a manual covering component identification, operating instructions, and — where applicable — fault-simulation or quiz procedures. For OEM-commissioned boards, the manual is aligned with your existing training documentation.
How long does delivery take?
From a confirmed order, 4–8 weeks depending on component procurement and volume. Prototype evaluation adds 1–2 weeks before series production. We advise booking a prototype slot 10–12 weeks before your programme start date.
Can we buy spares after delivery?
Yes. We retain the BOM for every board we produce. Spare sensors, relays, LEDs, and other components are available from us or sourced against the same part numbers.
Manufacturing and Quality
Provide:
- Product of interest (bridge rectifier, diode disc, diode strip, or other)
- Your application (ESP / transformer testing / X-ray / other)
- Required voltage and current ratings
- Quantity required
We will respond within one working day with a specification outline and a request for any additional information we need to start the design.
Email: ameetsys@yahoo.com
We respond within 48 hours.
Address: Plot No. 27, Survey No. 76/2A+B, Someshwar Colony, Satpur MIDC, Nashik – 422007, Maharashtra, India