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Explosion-proof grounding device SHGVA-UZG (CCA-GRD)

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PURPOSE AND SCOPE OF APPLICATION Новая усиленная конструкция, без изменения весо-габаритных параметров оболочек, позволила расширить область применения оборудования для подгруппы IIC.

Explosion-proof electronic grounding device SHGVA-UZG ensures grounding during loading and unloading of flammable liquids and explosive gases. Its operation is based on the control of the resistance circuit which guarantees grounding and control of the operation of a pump or other electric loading-unloading device.

Explosion-proof grounding device type SHGVA-UZG is intended for grounding and static charge removal from the surface of tank cars and railroad tankers, fuel reservoirs, ship fuel storage tanks. Intrinsic safety barrier [ia] is used in the grounding device SHGVA-UZG for protection during connection. If the clamps are removed during loading and unloading or if the grounding is lost (accidental fault or high voltage caused by latent oxidation), feeding pump or other electric loading and unloading device will be de-energized.

SHGVA-UZG grounding device is assembled on the base of SHORV171712-О09 enclosure made of aluminum-silicon alloy; clamps are made of stainless steel (galvanized steel upon request), contact pads on clamps are made of copper.

For direct insertion of cables and wires into Exd enclosure of the grounding device, the following specially developed Exd glands for direct insertion with sealing are applied KNV, KOV, KNVTN, KNVTV, KNVM and with encapsulation KNVZ series. According to the mandatory requirements, this characteristic is specified in the certificate. This helps to refuse from inlet junction box (except for mining version РВ), which makes the products of "ZAVOD GORELTEX" Co. Ltd. unique compared with products of other companies.

Full production cycle starting from casting molds and to ready product is performed at the explosion-proof equipment plant “ZAVOD GORELTEX” Co. Ltd. (former “CORTEM GORELTEX” Co. Ltd.) on the territory of the Russian Federation.

ADVANTAGES
1. The device does not require set up and is ready for operation right after the installation.
2. The device can withstand accidental voltage 220 V on grounding clamps and various electrostatic charges.
3. Automatic locking of the operating mechanisms of loading-unloading in case of break of grounding circuit by means of two potential-free changeover contacts (of a pump and of APCS).
4. Length of cable of grounding clamps is 10, 20, 30 m; 100 m on customer‘s request.
5. Contrast perception of the information on a display from distance in any lighting.
6. Small size.
7. Reasonable price.

Scope of application - hazardous indoor and outdoor areas in accordance with explosion protection marking, GOST 30852.13-2002 (IEC 60079-14:1996) and areas hazardous with combustible dust ignition, as per GOST IEC 61241-3-2011, dangerous production facilities of I, II, III, IV hazard classes under supervision of Rostekhnadzor and national supervisory bodies of the CU and the CIS countries.

COMPLETENESS

Internal electronic system with a grounding state indication unit, clamps, brackets for mounting, cable of length 10 m - 30 m or other length upon approval.