Pre-Operational Checks
1. Verify DC supply: 48-250V DC (±20%) at terminals X1:1(+) / X1:2(-)
2. Confirm CT wiring:
- Polarity marking aligned (P1 toward protected zone)
- Burden rating ≤ 0.2 VA at In (e.g., 1A or 5A)
3. Check fiber optic connections (if enabled):
- Max. attenuation: 3 dB/km at 1300 nm
- ST connectors cleaned per IEC 61300-2-42
Operating Sequence
Step 1: Initialization
1. Apply DC power → wait for system boot (LED sequence: red → amber → green)
2. Verify LCD display:
▶ Normal state: "READY"
▶ Fault state: "BLOCKED" (reset via front-pushbutton)
Step 2: Functional Testing
| Test Mode | Procedure | Expected Result |
|------------------|--------------------------------------------|------------------------|
| ‌**Restraint**‌ | Inject 0.8 × In ∠0° (W1) and 1.0 × In ∠180° (W2) | Trip time ≤ 35 ms |
| ‌**Unrestraint**‌ | Apply 15 × In at W1 only | Trip within 1/2 cycle |
| ‌**Harmonic Block**‌| Inject 2nd harmonic > 15% of fundamental | Block signal active |
Step 3: Settings Validation
; Verify key parameters (via DIGSI 5 software):
[DiffProtection]
OperatingChar = "D" ; Dual-slope characteristic
k1 = 30% ; Basic sensitivity
Is1 = 2.0 × In ; Breakpoint 1
k2 = 80% ; High-current slope
Calibration Procedure
Phase Angle Compensation:
1. Apply balanced currents:
- Winding 1: 1.0∠0° pu
- Winding 2: 1.0∠Yd_phase_shift pu (e.g., 1∠-30° for Yd11)
2. Adjust <PhaseCorrection> until differential current < 0.02 × In
CT Saturation Detection:
1. Inject asymmetric fault current with DC offset (τ = 100 ms)
2. Confirm "SAT DETECT" LED illuminates before 15 ms RINT-5411 ABB INVERTER DRIVE BOARD PDF
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Shipping:
1. Your item will be shipped to all countries via EMS, unless one country cannot be shipped via EMS. We will choose DHL, UPS, or FedEx. Please leave us your phone number.
2. We will ship the product to you on the same day or within 1-2 working days after receiving your payment. The shipping time depends on the country/region where you reside, the customs and habits of your country/region, and especially during peak hours.
3. Assuming (assuming) that the item requires payment of tariffs from your country, the buyer is obligated. We are not responsible for any taxes or customs fees in your country/region.
Return Policy:
1. Please contact us before returning the item.
2. The buyer should inform the seller of all returned items within 7 days after receiving the package. We reserve the right to reject any request to inform the seller for more than 7 days.
3. Returned products must have all original packaging and be in good condition.
Response policy:
If you are satisfied with the purchase, please leave us an active response.
2. If you have any questions about the outcome of the transaction or product, please contact us first and we will do our best to satisfy you!
3. Please do not reply with negative feedback before contacting us!
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