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Secondary injection testing

Relay Protection Test Sets — Three-Phase and Six-Phase

The VAE-430 and VAE-660 inject AC and DC current and voltage into protection relays for commissioning, routine maintenance and scheme validation. Six independent current channels, parallel output to 180 A, and a built-in controller so the set works without a laptop.

  • AC accuracy ≤ 0.2 %
  • 6 × 30 A, 1 × 180 A paralleled
  • Six voltage channels, ±360° phase
  • Stand-alone operation

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6 × 30 Aindependent current channels (VAE-660)
1 × 180 Aall channels paralleled
≤ 0.2 %AC measurement accuracy
20.3 kgVAE-660 carry weight

Why these two, and not a bigger box

Most protection work needs three currents and three voltages. Some needs six, synchronised. Buying channels you never energise costs money and adds weight to every site visit — so the family is split in two, sharing the same accuracy class and operating model.

Six independent current channels

The VAE-660 drives six currents simultaneously with 1 mA resolution, so both ends of a differential scheme are energised at once instead of in two passes.

Paralleled high current

Channels combine when a test needs bulk current: 1 × 120 A on the VAE-430, 3 × 60 A or 1 × 180 A at up to 1000 VA on the VAE-660.

Runs without a PC

Both sets carry a built-in controller with LCD and local keypad. Standard tests run stand-alone; serial and USB interfaces are there when you want PC-driven automation.

AC and DC from one unit

Current and voltage sources cover AC and DC ranges, so DC auxiliary and DC injection tests do not need a second instrument on site.

Choose the channel count

Same accuracy class, same stand-alone philosophy. The difference is how many currents you can energise at once, and what that buys you in scheme coverage.

  VAE-430 VAE-660
Current output 3 × 0–40 A AC 6 × 0–30 A AC
Paralleled current 1 × 0–120 A 3 × 0–60 A · 1 × 0–180 A
Current power 3 × 420 VA at 40 A 6 × 300 VA at 30 A · 1000 VA at 180 A
Voltage output 4 × 0–120 V AC · 1 × 0–240 V 6 × 0–120 V AC · 3 × 0–240 V
Accuracy AC ≤ 0.2 % · DC ≤ 0.5 % AC ≤ 0.2 % · DC ≤ 0.5 %
Phase control — ±360°
Binary I/O 8 inputs / 4 outputs USB and serial for PC automation
Weight 22 kg 20.3 kg
Typical fit Overcurrent, distance, frequency, three-phase differential Transformer, generator and busbar differential; schemes needing six currents

Where they are used

  • Substation commissioning
  • Routine protection maintenance
  • Transformer and generator differential
  • Busbar and line differential
  • Distance and auto-reclosing schemes
  • High-burden electromechanical relays
  • Metering CT verification
  • Protection training and coursework
VAE-430 PC software

See the test screens, not just the box

The VAE-430 software is being redesigned around the test workflow: a launcher for the modules, a three-phase AC screen with phasor and waveform, and a distance / zero-sequence screen with the R-X plane and records in one view.

VAE-430 3-phase AC test screen concept with phasor, waveform and measured values
Concept UI preview · sample data · final release may differ.

See all three screens

Questions buyers ask before ordering

Three-phase or six-phase — which one do I actually need?
Three-phase (VAE-430) covers overcurrent, distance, frequency and single-ended differential schemes. Six-phase (VAE-660) is for transformer, generator, busbar and line differential testing where two sets of currents must be energised and synchronised, or where you need three-phase current and three-phase voltage at the same time.
Can it test IEC 61850 process-bus relays?
No. Both sets inject through the relay’s analog current and voltage inputs. IEC 61850 sampled values and GOOSE testing requires a dedicated digital test set — we would rather tell you that now than have you find out at the substation.
Does it need a laptop on site?
No. Both units run stand-alone from a built-in controller with LCD and keypad. A serial port (VAE-430) or USB and serial (VAE-660) is available when you want PC-driven test sequences and result export.
How much current can be delivered on one phase?
VAE-430: 1 × 0–120 A with the three channels paralleled. VAE-660: 3 × 0–60 A with three channels paralleled, or 1 × 0–180 A with all six, at up to 1000 VA.
What about high-burden electromechanical relays?
The current sources are specified with their VA output at full current — 420 VA per phase on the VAE-430 and 300 VA per phase on the VAE-660 — so you can check the burden against the relay’s coil data before committing.

Tell us the relays you test

Send the relay models and the schemes you need to cover — overcurrent, distance, transformer differential, busbar — and we will confirm which set fits, what it costs, and what the lead time is.

Prefer email? sales@fesotest.com
Phone / WhatsApp: +86 132 6572 6720

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