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OMICRON CPC 100 vs TESTRANO 600: Transformer Test Set Comparison
The OMICRON CPC 100 and TESTRANO 600 both test power transformers on site, but they are built for different jobs. The CPC 100 is a multi-functional primary test system that also covers instrument transformers, earthing systems and primary injection. The TESTRANO 600 is a dedicated three-phase transformer test system. This page sets them side by side using OMICRON’s published specifications, so you can choose before you hire transformer test equipment.
Specifications side by side
| Specification | CPC 100 | TESTRANO 600 |
|---|---|---|
| Type | Multi-functional primary test system | Three-phase transformer test system |
| AC current | 800 A (25 s), 400 A (8 min); 6 A and 3 A ranges | 3 x 33 A; single-phase up to 50 A |
| DC current | 400 A (2 min); 6 A range | 3 x 33 A at 56 V; single-phase up to 100 A |
| AC voltage | 2 kV, 1 kV, 500 V and 130 V ranges; 12 kV with the CP TD1 | 3-phase 0 V to 230 V line to neutral (400 V line to line) |
| Frequency | 15 Hz to 400 Hz | DC, 15 Hz to 599 Hz |
| Phases injected at once | One | Three |
| Weight | 29 kg | About 20 kg |
| Dimensions (W x H x D) | 468 x 394 x 233 mm | 580 x 386 x 229 mm |
| Supply | 100 V to 240 V AC, 16 A | 100 V to 240 V AC |
| Software | Front panel and Primary Test Manager | TouchControl and Primary Test Manager |
Transformer tests each one covers
| Test | CPC 100 | TESTRANO 600 |
|---|---|---|
| Turns ratio per tap | Yes | Yes, three-phase |
| Winding resistance | Yes | Yes, three-phase |
| Dynamic resistance of on-load tap changers | Yes | Yes, with automatic tap changer control |
| Short-circuit impedance and leakage reactance | Yes | Yes |
| Frequency response of stray losses (FRSL) | With the CP TD1 | Yes |
| Excitation (magnetising) current | With the CP TD1 | Yes |
| Demagnetisation | With the CP SB1 switch box | Yes |
| Vector group | With the CP SB1 switch box | Yes |
| Power factor and dissipation factor | With the CP TD1 | With the CP TD12 |
Beyond power transformers, OMICRON lists the CPC 100 for CT and VT testing (ratio, burden, excitation), earthing system and line parameter measurements with the CP CU1, and primary injection. OMICRON does not list CT testing for the TESTRANO 600.
Points that usually decide it
- Three-phase injection: the TESTRANO 600 tests all three phases in one connection, which shortens ratio, winding resistance and tap changer tests on a power transformer.
- Range of jobs: the CPC 100 also covers CTs, VTs, earthing systems and high-current primary injection.
- Current: the CPC 100 reaches 800 A AC and 400 A DC; the TESTRANO 600 tops out at 100 A DC single-phase.
- Accessories: on the CPC 100, several transformer tests need the CP TD1 or the CP SB1.
Hire either set from Megavar
Both are in the Megavar hire fleet with published day rates, supplied calibrated with OMICRON’s manuals. See the CPC 100 hire page, the TESTRANO 600 hire page and the CP TD1, or call 1300 730 499. If you would rather have the testing done for you, see transformer testing.
Specifications are OMICRON’s published figures (CPC 100 brochure; TESTRANO 600 brochure, 2023; omicronenergy.com). The quote for your hire confirms the configuration supplied.
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