Megger EST 35 35 kV High Voltage Discharge Rod

Megger EST 35 Overview

The Megger EST 35 (Ord. No. 81 0300) is a high voltage discharge rod for safely dissipating capacitive charge from high-voltage equipment after de-energization. Rated to 35 kV, it gives electrical technicians and engineers a secure way to discharge substation, power-plant and industrial apparatus, preventing accidental electric shock and equipment damage.

Who the Megger EST 35 is for

The Megger EST 35 (order no. 81 0300) is for cable test and fault location crews working up to 35 kV who must remove stored charge before anyone touches the conductor. After an insulation or DC withstand test, a cable behaves like a charged capacitor. The EST 35 lets the operator first bleed that energy through a resistor and then apply a direct, visible earth with the hook.

Key figures from Megger’s EST datasheet (Discharge-Rod_DS_EN):

• 35 kV rating with a 10 kΩ discharge resistor and a 6 µF maximum test-object capacitance
• 50 cm long and 0.95 kg, the shortest and lightest rod in the EST family
• Discharge time follows τ = R × C; after 5–10 τ (max. 5 s) the voltage is down to a harmless level and the cable can be earthed visibly
• Let the rod cool for 30 minutes after use so the built-in resistor is not thermally overloaded

More HV safety and test gear from MME, an authorized Megger representative in the UAE, sits in our cable fault locators and across the Megger range. Compare the whole Megger EST discharge rod series or the longer Megger EST 50. Test sources that leave a charged cable behind include the Megger HV Tester 25 DC generator and the Megger MIT1525/2 15 kV insulation tester.

Megger EST 35 Key Features

What the Megger EST 35 brings to a post-test discharge:

• Rated for safe discharge of equipment up to 35 kV
• Discharge resistor in the tip (10 kΩ on the EST 35) limits the current so the charge bleeds off in a damped way
• High-dielectric-strength GFK fibreglass shaft, 50 cm long, with grip protection and generous clearance from the HV end
• Rated for test objects up to 6 µF; built to EN 50191, EN 61230 and EN 61219
• Protects both operator and equipment during discharge

Megger EST 35 Applications

The EST 35 is used after high-voltage testing or switching to discharge and ground capacitive charge on cables, capacitors and apparatus before they are handled. Its 35 kV rating suits medium-voltage substation, power-plant and industrial work where residual charge must be dissipated in a controlled, safe manner.

What comes with the Megger EST 35

Megger’s EST datasheet (Discharge-Rod_DS_EN_V02) orders the EST 35 as one item, order no. 81 0300, and does not publish a separate scope-of-supply list:

• Megger EST 35 high voltage discharge rod (order no. 81 0300)

The datasheet tells you to connect the earthing cable to a safety or operational earth before using the rod. Ask us to confirm the earthing cable and any other accessories before you order.

Megger EST 35 vs EST 50 and EST 100

The EST 35 is rated to 35 kV. For higher-voltage work, the Megger EST 50 (50 kV, 136 cm, 100 kΩ, 6 µF) and EST 100 (100 kV, 176 cm, 200 kΩ, 3 µF) offer higher voltage ratings and longer reach. Note that the EST 100 is rated for a lower maximum capacitance than the EST 35, per the Megger datasheet.

Megger EST 35 FAQ

Questions crews ask before choosing the EST 35:

• Can I earth the cable straight away with the hook? No. Megger advises discharging through the rod tip for a few seconds first, then using the hook for the direct, visible earth.
• Is 35 kV enough for my test set? Choose a rod rated at or above the highest DC voltage you apply. Above 35 kV, look at the EST 50, 75, 100 or 150.
• What does the 6 µF figure mean? It is the largest test-object capacitance Megger specifies for the EST 35, so check long cable runs against it.
• What gets connected first? The earthing cable goes to a safety or operational earth before the rod touches the conductor.

Why buy the Megger EST 35 from MME in the UAE

MME (MOHAMMAD MAHDI Electronics Trading LLC) is an authorized Megger representative and supplies HV safety accessories such as the EST 35 to test crews throughout the Emirates, with technical support. Contact us for pricing and availability.