ELTEL TRM-100 Transformer Turns Ratio Tester (TRM-100)

Compact, portable ratiometer for precise no-load turns ratio, phase deviation & excitation current measurement.

• Model: TRM-100 (ELTEL)
• Range: 0.8 : 1 up to 2021 : 1
• Test voltages: Isolated 120V AC or 12V AC (1A)
• True 4-terminal measurement to eliminate lead errors
• Phase sensitive null detector — detects 1 turn in 2000
• Phase angle deviation & polarity check
• Protection: electronic input protection + resettable MCB
• Replaceable plug-in PCB & powerline filtering for RF immunity

Technical specifications

Download datasheet: ELTEL TRM-100 Datasheet (PDF)

Why choose TRM-100?

• Fast, accurate transformer comparisons on site (works as a transformer comparator)
• Detects shorted turns, incorrect parallel windings via phase angle analysis
• Robust field protection and replaceable electronics for easy servicing

Want a quote or demo? Call 8961089611 or email info@industrialindia.com.

FAQ

What test voltages does Eltel TRM-100 supply?

Two isolated test voltages — 120V AC and 12V AC (both rated 1A).

What ratio range can Eltel TRM-100 measure?

0.8:1 up to 2021:1 (no-load measurement).

Does it provide polarity check?

Yes — an LED polarity indicator and REV switch are provided.