Hioki Phase Detectors

Analog and digital phase sequence detectors for 3-phase systems.

3 products found

Shop Hioki Phase Detectors

PD3129

Hioki PD3129 Phase Detector

Non-contact phase sequence detector for thin insulated conductors (Φ2.4–17mm). Clips on...

₹17,978 ₹14,382 + 18% GST

PD3129-10

Hioki PD3129-10 Phase Detector

Non-contact phase sequence detector for thick insulated conductors (Φ7–40mm) with exten...

₹17,978 ₹13,484 + 18% GST

PD3259-50

Hioki PD3259-50 Digital Phase Detector

Phase sequence tester and voltage detector in one. Tests phase rotation, voltage presence ...

₹63,935 ₹47,951 + 18% GST

What is a Phase Detector?

A phase detector (also called phase sequence tester) identifies electrical phase without digital display. It detects voltage presence and phase sequence (A-B-C vs A-C-B) on three-phase systems. Safety-critical for electricians working on live panels.

Why this matters: Wrong phase sequence can damage motors, compressors, and rotating equipment. It can also cause dangerous feedback in some systems. Phase detectors prevent installation errors that cost thousands in equipment damage.

Key advantage: A ₹2,000 phase detector prevents ₹1,00,000+ in motor damage from wrong phase sequence.

Why Choose Hioki Phase Detectors?

Hioki phase detectors are trusted by electrical contractors for safe, fast phase verification:

1. Non-Contact Clip-On Detection

All three models clip directly onto insulated conductors and sense phase through the insulation — no need to strip wires or expose live metal, making testing faster and safer.

2. Instant Phase Sequence Verification

Identifies whether three-phase sequence is correct or reversed via clear LED and buzzer indication. Prevents motor damage from reverse rotation before you ever energise the equipment.

3. A Model for Every Conductor Size

The PD3129 handles thin conductors (2.4-17mm) typical of residential and light commercial work; the PD3129-10 handles thick conductors (7-40mm) for industrial feeders, with a higher CAT IV 600V / CAT III 1000V rating to match.

4. Combined Phase and Voltage Measurement (PD3259-50)

The PD3259-50 goes further, simultaneously measuring three-phase voltage alongside phase sequence — replacing what used to take four separate measurement steps with a single non-contact test.

5. Rugged, Field-Ready Design

Compact enough to carry daily, with CAT-rated safety for live panel and distribution board work. All models are battery-powered (not mains-dependent), so they're ready whenever you need them.

Popular Hioki Phase Detectors

Simple, rugged phase detection:

Model	Best For	Safety Rating	Voltage Range	Conductor Diameter
PD3129	Residential & light commercial work	CAT III 600V	70-600V AC	2.4-17mm (thin)
PD3129-10	Industrial feeders & thicker cables	CAT IV 600V / CAT III 1000V	70-1000V AC	7-40mm (thick)
PD3259-50	Combined phase sequence + 3-phase voltage measurement	CAT IV 600V	90-600V AC (measured)	6-30mm

Phase Detection Applications in Indian Industry

Phase detection is critical for safety:

Three-Phase Motor Installation & Startup

Verify correct phase sequence before starting a motor. Wrong sequence causes the motor to run backward, potentially damaging compressors and pumps within seconds.

Combined Phase & Voltage Verification (PD3259-50)

Check phase sequence and measure actual three-phase voltage in one non-contact step, replacing separate phase-check and voltage-check procedures during panel commissioning.

Power Distribution Installation

Verify correct phase sequence in distribution boards and substations before energising, preventing damage to connected equipment.

Solar System Three-Phase Installation

Some solar inverters are three-phase. Verify correct phase sequence before connecting to minimise ground faults and damage risk.

Industrial Equipment Commissioning

Verify phase sequence before starting pumps, compressors, fans and machinery. Prevents damage and ensures safe operation from first startup.

Electrical Safety Training & Certification

Phase detectors teach electricians proper non-contact testing procedures — a standard tool in vocational training and apprenticeships.

Frequently Asked Questions

What happens if I connect a motor to the wrong phase sequence?

The motor will rotate backward, or vibrate abnormally under load. This can damage rotating equipment like compressors within seconds. Always verify sequence before first startup.

Can I check phase sequence with a multimeter?

Multimeters can measure voltage between phases, but determining sequence requires either specialised technique or calculation. A phase detector gives instant visual and audible indication — much faster and simpler.

Do I need a phase detector if a panel builder wired the system?

Yes — always verify independently before startup. Wiring errors happen, and a phase detector costing a fraction of a motor's value can prevent expensive equipment damage.

Are these phase detectors safe to use on live circuits?

Yes, that is their intended use. All three models are non-contact — they clip onto the insulated conductor rather than touching bare metal, and are CAT-rated for live panel work (CAT III 600V for the PD3129, up to CAT IV 600V / CAT III 1000V for the PD3129-10, and CAT IV 600V for the PD3259-50).

Which model do I need for my conductor size?

The PD3129 fits thin insulated conductors (2.4-17mm), typical of residential and light commercial wiring. The PD3129-10 fits thick conductors (7-40mm) for industrial feeders and larger cables. The PD3259-50 fits 6-30mm conductors and adds three-phase voltage measurement alongside sequence detection.

Can I use a phone app instead of a phase detector?

No. Phone sensors cannot reliably detect electrical phase or voltage. Use a certified electrical tester for any safety-critical phase verification.

Do these phase detectors need batteries?

Yes. All three models are battery-powered (AA/LR6 cells) — they are not mains-dependent, so they work anywhere, but you should keep spare batteries on hand. An optional magnetic mounting accessory is available for hands-free panel attachment, which is a separate feature from the battery power source.

Buy Hioki Phase Detectors in India

Industrial Supply Syndicate is an authorized independent reseller of Hioki phase detectors in India. We stock the complete range and ship pan India with GST invoice. For bulk orders, institutional procurement, and tender requirements, please contact us for special pricing.