AC Panel Analog Meter [SURDHI]

• Surdhi SR 72V AC Voltmeter: Measures AC voltages typically ranging from 15V to 600V AC. It features a compact 72 x 72 mm square frame.
• Surdhi SR 96V AC Voltmeter: Offers the same 15V to 600V AC measurement range but comes in a larger, easier-to-read 96 x 96 mm enclosure.
• Surdhi SR 72A Direct AC Ammeter: Measures alternating current up to 200 Amps directly without requiring an external current transformer.
• Surdhi SR 72 CT Operated Ammeter: Tailored for higher current systems, operating alongside external Current Transformers (CT) up to 5000A.
• Surdhi SR 96 Hz Frequency Meter: Tracks AC frequency ranges (like 47–53 Hz or 45–55 Hz) for 110V, 230V, or 440V systems.

• Display Mechanism: 90-degree pointer deflection needle scale.
• Slide Dial Feature: Includes a sliding dial configuration, allowing users to swap the faceplate scale easily on-site for different CT/PT ratios without replacing the inner mechanism.
• Mounting Type: Quick flush-panel mounting supported by built-in sliding clamps.
• Housing Material: Robust, industrial-grade ABS plastic housing

Electrical Operating Characteristics

• Accuracy Class: Rated at Class 1.5 according to standard IS: 1248 industrial testing norms. This guarantees a reading accuracy variance of no more than \(\pm1.5\%\) of the full-scale value.
• Overload Limits: Designed to handle short-duration electrical surges. Ammeters can survive transient overloads of up to 2 times the rated current during motor starting sequences without bending the needle.
• Frequency Range Compatibility: Capable of reading alternating currents across common power system frequencies of 50 Hz and 60 Hz
• Sliding Dial Provision: Features an interchangeable slider dial. This allows on-site dial swapping for varying CT and PT ratios without replacing the physical core mechanism.
• 90° Pointer Movement: Deflects along a clean 90-degree angular sweep for quick scale readability.
• Heavy-Duty Housing: Enclosed in robust, flame-retardant ABS plastic casing with protective glass windows.
• Easy Panel Mounting: Utilizes a back-sliding clamp system that drastically reduces installation and alignment times