Dimmerstat / Primary Current Injector Set
Alliance Engineering Company
Alliance Engineering Dimmerstat cum Primary Current Injector Set is a precision variable autotransformer unit used for testing, calibration, and commissioning of current transformers, protection relays, and metering equipment. The continuously variable rotary dial allows smooth adjustment of output voltage from 0 to 300V AC, while the high-ratio output transformer injects proportional primary current for CT ratio and burden testing. The front panel features an analog voltmeter (0–300V), an analog ammeter (0–300A), a Royal B-25 MCB for overload protection, a yellow power-on pilot lamp, and heavy-duty red output terminals. Housed in a robust grey MS powder-coated bench-mount enclosure. Manufactured and tested by Alliance Engineering Company under ISO 9001:2015.
Key Technical Advantages
Output Voltage
0 – 300V AC (variable)
Output Current
0 – 300A (via injection transformer)
Control
Continuously Variable Rotary Dial
Protection
25A MCB (Royal B-25)
Indication
Analog Voltmeter + Ammeter + Pilot Lamp
Certification
ISO 9001:2015
Technical Specifications
Validated industrial performance metrics for enterprise deployment.
| Parameter | Specification |
|---|---|
| Standard | IS 5142 |
| Type | Variable Autotransformer (Dimmerstat) with Primary Current Injection Output |
| Input Voltage | 230V AC ± 10%, Single Phase |
| Input Frequency | 50Hz |
| Output Voltage Range | 0 – 300V AC (continuously variable) |
| Output Current | 0 – 300A (via step-down injection transformer) |
| Voltage Control | Continuously variable rotary dial (0–300 graduation) |
| Voltmeter | Analog panel voltmeter, 0–300V, Class 1.5 |
| Ammeter | Analog panel ammeter, 0–300A, Class 1.5 |
| MCB Rating | 25A, Royal B-25 |
| Pilot Indication | Yellow pilot lamp (Power ON) |
| Output Terminals | Heavy-duty red insulated terminals (primary current output) |
| Winding Material | Copper |
| Core Material | CRGO Steel |
| Insulation Class | Class F (155°C) |
| Enclosure | MS Powder Coated Grey Cabinet |
| Mounting | Bench Mount / Tabletop |
| Operating Temperature | -10°C to +50°C |
| Humidity | Up to 95% RH non-condensing |
Standards & Compliance
Certified engineering excellence across regional and global regulatory frameworks.
IS 5142
Compliance with standard engineering and safety performance metrics.
ISO 9001:2015
Certified Quality Management Systems for precision manufacturing.
Industrial Customizations
Our modular engineering workflow allows for specific adaptations to meet your site-specific infrastructure requirements. Consult with our technical team for bespoke builds.
Output Current Range
0 – 300A (standard)
Output Voltage Range
0 – 300V AC (continuously variable)
MCB Rating
25A standard (Royal B-25)
Enclosure and Portability
Bench Mount MS Cabinet
Engineering Consultation
Connect with our technical desk for bulk specifications, tender support, or specialized engineering requests.
